diff --git a/src-tauri/src/commands/usage.rs b/src-tauri/src/commands/usage.rs
index 9bf0bf08e..79a3280fa 100644
--- a/src-tauri/src/commands/usage.rs
+++ b/src-tauri/src/commands/usage.rs
@@ -11,8 +11,11 @@ pub fn get_usage_summary(
     state: State<'_, AppState>,
     start_date: Option<i64>,
     end_date: Option<i64>,
+    app_type: Option<String>,
 ) -> Result<UsageSummary, AppError> {
-    state.db.get_usage_summary(start_date, end_date)
+    state
+        .db
+        .get_usage_summary(start_date, end_date, app_type.as_deref())
 }
 
 /// 获取每日趋势
@@ -21,20 +24,29 @@ pub fn get_usage_trends(
     state: State<'_, AppState>,
     start_date: Option<i64>,
     end_date: Option<i64>,
+    app_type: Option<String>,
 ) -> Result<Vec<DailyStats>, AppError> {
-    state.db.get_daily_trends(start_date, end_date)
+    state
+        .db
+        .get_daily_trends(start_date, end_date, app_type.as_deref())
 }
 
 /// 获取 Provider 统计
 #[tauri::command]
-pub fn get_provider_stats(state: State<'_, AppState>) -> Result<Vec<ProviderStats>, AppError> {
-    state.db.get_provider_stats()
+pub fn get_provider_stats(
+    state: State<'_, AppState>,
+    app_type: Option<String>,
+) -> Result<Vec<ProviderStats>, AppError> {
+    state.db.get_provider_stats(app_type.as_deref())
 }
 
 /// 获取模型统计
 #[tauri::command]
-pub fn get_model_stats(state: State<'_, AppState>) -> Result<Vec<ModelStats>, AppError> {
-    state.db.get_model_stats()
+pub fn get_model_stats(
+    state: State<'_, AppState>,
+    app_type: Option<String>,
+) -> Result<Vec<ModelStats>, AppError> {
+    state.db.get_model_stats(app_type.as_deref())
 }
 
 /// 获取请求日志列表
diff --git a/src-tauri/src/services/usage_stats.rs b/src-tauri/src/services/usage_stats.rs
index d03eea482..6aaf3da42 100644
--- a/src-tauri/src/services/usage_stats.rs
+++ b/src-tauri/src/services/usage_stats.rs
@@ -123,44 +123,54 @@ impl Database {
         &self,
         start_date: Option<i64>,
         end_date: Option<i64>,
+        app_type: Option<&str>,
     ) -> Result<UsageSummary, AppError> {
         let conn = lock_conn!(self.conn);
 
-        let (where_clause, params_vec) = if start_date.is_some() || end_date.is_some() {
-            let mut conditions = Vec::new();
-            let mut params = Vec::new();
+        // Build detail WHERE clause
+        let mut conditions = Vec::new();
+        let mut params_vec: Vec<Box<dyn rusqlite::ToSql>> = Vec::new();
 
-            if let Some(start) = start_date {
-                conditions.push("created_at >= ?");
-                params.push(start);
-            }
-            if let Some(end) = end_date {
-                conditions.push("created_at <= ?");
-                params.push(end);
-            }
+        if let Some(start) = start_date {
+            conditions.push("created_at >= ?");
+            params_vec.push(Box::new(start));
+        }
+        if let Some(end) = end_date {
+            conditions.push("created_at <= ?");
+            params_vec.push(Box::new(end));
+        }
+        if let Some(at) = app_type {
+            conditions.push("app_type = ?");
+            params_vec.push(Box::new(at.to_string()));
+        }
 
-            (format!("WHERE {}", conditions.join(" AND ")), params)
+        let where_clause = if conditions.is_empty() {
+            String::new()
         } else {
-            (String::new(), Vec::new())
+            format!("WHERE {}", conditions.join(" AND "))
         };
 
-        // Build rollup WHERE clause using date strings (use ? for sequential binding)
-        let (rollup_where, rollup_params) = if start_date.is_some() || end_date.is_some() {
-            let mut conditions: Vec<String> = Vec::new();
-            let mut params = Vec::new();
+        // Build rollup WHERE clause using date strings
+        let mut rollup_conditions: Vec<String> = Vec::new();
+        let mut rollup_params: Vec<Box<dyn rusqlite::ToSql>> = Vec::new();
 
-            if let Some(start) = start_date {
-                conditions.push("date >= date(?, 'unixepoch', 'localtime')".to_string());
-                params.push(start);
-            }
-            if let Some(end) = end_date {
-                conditions.push("date <= date(?, 'unixepoch', 'localtime')".to_string());
-                params.push(end);
-            }
+        if let Some(start) = start_date {
+            rollup_conditions.push("date >= date(?, 'unixepoch', 'localtime')".to_string());
+            rollup_params.push(Box::new(start));
+        }
+        if let Some(end) = end_date {
+            rollup_conditions.push("date <= date(?, 'unixepoch', 'localtime')".to_string());
+            rollup_params.push(Box::new(end));
+        }
+        if let Some(at) = app_type {
+            rollup_conditions.push("app_type = ?".to_string());
+            rollup_params.push(Box::new(at.to_string()));
+        }
 
-            (format!("WHERE {}", conditions.join(" AND ")), params)
+        let rollup_where = if rollup_conditions.is_empty() {
+            String::new()
         } else {
-            (String::new(), Vec::new())
+            format!("WHERE {}", rollup_conditions.join(" AND "))
         };
 
         let sql = format!(
@@ -194,10 +204,11 @@ impl Database {
         );
 
         // Combine params: detail params first, then rollup params
-        let mut all_params: Vec<i64> = params_vec;
+        let mut all_params: Vec<Box<dyn rusqlite::ToSql>> = params_vec;
         all_params.extend(rollup_params);
+        let param_refs: Vec<&dyn rusqlite::ToSql> = all_params.iter().map(|p| p.as_ref()).collect();
 
-        let result = conn.query_row(&sql, rusqlite::params_from_iter(all_params), |row| {
+        let result = conn.query_row(&sql, param_refs.as_slice(), |row| {
             let total_requests: i64 = row.get(0)?;
             let total_cost: f64 = row.get(1)?;
             let total_input_tokens: i64 = row.get(2)?;
@@ -231,6 +242,7 @@ impl Database {
         &self,
         start_date: Option<i64>,
         end_date: Option<i64>,
+        app_type: Option<&str>,
     ) -> Result<Vec<DailyStats>, AppError> {
         let conn = lock_conn!(self.conn);
 
@@ -262,9 +274,15 @@ impl Database {
             bucket_count = 1;
         }
 
+        let app_type_filter = if app_type.is_some() {
+            "AND app_type = ?4"
+        } else {
+            ""
+        };
+
         // Query detail logs
-        let sql = "
-            SELECT
+        let sql = format!(
+            "SELECT
                 CAST((created_at - ?1) / ?3 AS INTEGER) as bucket_idx,
                 COUNT(*) as request_count,
                 COALESCE(SUM(CAST(total_cost_usd AS REAL)), 0) as total_cost,
@@ -274,12 +292,13 @@ impl Database {
                 COALESCE(SUM(cache_creation_tokens), 0) as total_cache_creation_tokens,
                 COALESCE(SUM(cache_read_tokens), 0) as total_cache_read_tokens
             FROM proxy_request_logs
-            WHERE created_at >= ?1 AND created_at <= ?2
+            WHERE created_at >= ?1 AND created_at <= ?2 {app_type_filter}
             GROUP BY bucket_idx
-            ORDER BY bucket_idx ASC";
+            ORDER BY bucket_idx ASC"
+        );
 
-        let mut stmt = conn.prepare(sql)?;
-        let rows = stmt.query_map(params![start_ts, end_ts, bucket_seconds], |row| {
+        let mut stmt = conn.prepare(&sql)?;
+        let row_mapper = |row: &rusqlite::Row| {
             Ok((
                 row.get::<_, i64>(0)?,
                 DailyStats {
@@ -293,24 +312,33 @@ impl Database {
                     total_cache_read_tokens: row.get::<_, i64>(7)? as u64,
                 },
             ))
-        })?;
+        };
 
         let mut map: HashMap<i64, DailyStats> = HashMap::new();
-        for row in rows {
-            let (mut bucket_idx, stat) = row?;
-            if bucket_idx < 0 {
-                continue;
+
+        // Collect rows into map (need to handle both param variants)
+        {
+            let rows = if let Some(at) = app_type {
+                stmt.query_map(params![start_ts, end_ts, bucket_seconds, at], row_mapper)?
+            } else {
+                stmt.query_map(params![start_ts, end_ts, bucket_seconds], row_mapper)?
+            };
+            for row in rows {
+                let (mut bucket_idx, stat) = row?;
+                if bucket_idx < 0 {
+                    continue;
+                }
+                if bucket_idx >= bucket_count {
+                    bucket_idx = bucket_count - 1;
+                }
+                map.insert(bucket_idx, stat);
             }
-            if bucket_idx >= bucket_count {
-                bucket_idx = bucket_count - 1;
-            }
-            map.insert(bucket_idx, stat);
         }
 
         // Also query rollup data (daily granularity, only useful for daily buckets)
         if bucket_seconds >= 86400 {
-            let rollup_sql = "
-                SELECT
+            let rollup_sql = format!(
+                "SELECT
                     CAST((CAST(strftime('%s', date) AS INTEGER) - ?1) / ?3 AS INTEGER) as bucket_idx,
                     COALESCE(SUM(request_count), 0),
                     COALESCE(SUM(CAST(total_cost_usd AS REAL)), 0),
@@ -320,12 +348,12 @@ impl Database {
                     COALESCE(SUM(cache_creation_tokens), 0),
                     COALESCE(SUM(cache_read_tokens), 0)
                 FROM usage_daily_rollups
-                WHERE date >= date(?1, 'unixepoch', 'localtime') AND date <= date(?2, 'unixepoch', 'localtime')
+                WHERE date >= date(?1, 'unixepoch', 'localtime') AND date <= date(?2, 'unixepoch', 'localtime') {app_type_filter}
                 GROUP BY bucket_idx
-                ORDER BY bucket_idx ASC";
+                ORDER BY bucket_idx ASC"
+            );
 
-            let mut rstmt = conn.prepare(rollup_sql)?;
-            let rrows = rstmt.query_map(params![start_ts, end_ts, bucket_seconds], |row| {
+            let rollup_row_mapper = |row: &rusqlite::Row| {
                 Ok((
                     row.get::<_, i64>(0)?,
                     (
@@ -338,7 +366,14 @@ impl Database {
                         row.get::<_, i64>(7)? as u64,
                     ),
                 ))
-            })?;
+            };
+
+            let mut rstmt = conn.prepare(&rollup_sql)?;
+            let rrows = if let Some(at) = app_type {
+                rstmt.query_map(params![start_ts, end_ts, bucket_seconds, at], rollup_row_mapper)?
+            } else {
+                rstmt.query_map(params![start_ts, end_ts, bucket_seconds], rollup_row_mapper)?
+            };
 
             for row in rrows {
                 let (mut bucket_idx, (req, cost, tok, inp, out, cc, cr)) = row?;
@@ -400,11 +435,21 @@ impl Database {
     }
 
     /// 获取 Provider 统计
-    pub fn get_provider_stats(&self) -> Result<Vec<ProviderStats>, AppError> {
+    pub fn get_provider_stats(
+        &self,
+        app_type: Option<&str>,
+    ) -> Result<Vec<ProviderStats>, AppError> {
         let conn = lock_conn!(self.conn);
 
+        let (detail_where, rollup_where) = if app_type.is_some() {
+            ("WHERE l.app_type = ?1", "WHERE r.app_type = ?2")
+        } else {
+            ("", "")
+        };
+
         // UNION detail logs + rollup data, then aggregate
-        let sql = "SELECT
+        let sql = format!(
+            "SELECT
                 provider_id, app_type, provider_name,
                 SUM(request_count) as request_count,
                 SUM(total_tokens) as total_tokens,
@@ -423,6 +468,7 @@ impl Database {
                     COALESCE(SUM(l.latency_ms), 0) as latency_sum
                 FROM proxy_request_logs l
                 LEFT JOIN providers p ON l.provider_id = p.id AND l.app_type = p.app_type
+                {detail_where}
                 GROUP BY l.provider_id, l.app_type
                 UNION ALL
                 SELECT r.provider_id, r.app_type,
@@ -434,13 +480,15 @@ impl Database {
                     COALESCE(SUM(r.avg_latency_ms * r.request_count), 0)
                 FROM usage_daily_rollups r
                 LEFT JOIN providers p2 ON r.provider_id = p2.id AND r.app_type = p2.app_type
+                {rollup_where}
                 GROUP BY r.provider_id, r.app_type
             )
             GROUP BY provider_id, app_type
-            ORDER BY total_cost DESC";
+            ORDER BY total_cost DESC"
+        );
 
-        let mut stmt = conn.prepare(sql)?;
-        let rows = stmt.query_map([], |row| {
+        let mut stmt = conn.prepare(&sql)?;
+        let row_mapper = |row: &rusqlite::Row| {
             let request_count: i64 = row.get(3)?;
             let success_count: i64 = row.get(6)?;
             let success_rate = if request_count > 0 {
@@ -460,7 +508,13 @@ impl Database {
                 success_rate,
                 avg_latency_ms: row.get::<_, f64>(7)? as u64,
             })
-        })?;
+        };
+
+        let rows = if let Some(at) = app_type {
+            stmt.query_map(params![at, at], row_mapper)?
+        } else {
+            stmt.query_map([], row_mapper)?
+        };
 
         let mut stats = Vec::new();
         for row in rows {
@@ -471,11 +525,18 @@ impl Database {
     }
 
     /// 获取模型统计
-    pub fn get_model_stats(&self) -> Result<Vec<ModelStats>, AppError> {
+    pub fn get_model_stats(&self, app_type: Option<&str>) -> Result<Vec<ModelStats>, AppError> {
         let conn = lock_conn!(self.conn);
 
+        let (detail_where, rollup_where) = if app_type.is_some() {
+            ("WHERE app_type = ?1", "WHERE app_type = ?2")
+        } else {
+            ("", "")
+        };
+
         // UNION detail logs + rollup data
-        let sql = "SELECT
+        let sql = format!(
+            "SELECT
                 model,
                 SUM(request_count) as request_count,
                 SUM(total_tokens) as total_tokens,
@@ -486,6 +547,7 @@ impl Database {
                     COALESCE(SUM(input_tokens + output_tokens), 0) as total_tokens,
                     COALESCE(SUM(CAST(total_cost_usd AS REAL)), 0) as total_cost
                 FROM proxy_request_logs
+                {detail_where}
                 GROUP BY model
                 UNION ALL
                 SELECT model,
@@ -493,13 +555,15 @@ impl Database {
                     COALESCE(SUM(input_tokens + output_tokens), 0),
                     COALESCE(SUM(CAST(total_cost_usd AS REAL)), 0)
                 FROM usage_daily_rollups
+                {rollup_where}
                 GROUP BY model
             )
             GROUP BY model
-            ORDER BY total_cost DESC";
+            ORDER BY total_cost DESC"
+        );
 
-        let mut stmt = conn.prepare(sql)?;
-        let rows = stmt.query_map([], |row| {
+        let mut stmt = conn.prepare(&sql)?;
+        let row_mapper = |row: &rusqlite::Row| {
             let request_count: i64 = row.get(1)?;
             let total_cost: f64 = row.get(3)?;
             let avg_cost = if request_count > 0 {
@@ -515,7 +579,13 @@ impl Database {
                 total_cost: format!("{total_cost:.6}"),
                 avg_cost_per_request: format!("{avg_cost:.6}"),
             })
-        })?;
+        };
+
+        let rows = if let Some(at) = app_type {
+            stmt.query_map(params![at, at], row_mapper)?
+        } else {
+            stmt.query_map([], row_mapper)?
+        };
 
         let mut stats = Vec::new();
         for row in rows {
@@ -1044,7 +1114,7 @@ mod tests {
             )?;
         }
 
-        let summary = db.get_usage_summary(None, None)?;
+        let summary = db.get_usage_summary(None, None, None)?;
         assert_eq!(summary.total_requests, 2);
         assert_eq!(summary.success_rate, 100.0);
 
@@ -1079,7 +1149,7 @@ mod tests {
             )?;
         }
 
-        let stats = db.get_model_stats()?;
+        let stats = db.get_model_stats(None)?;
         assert_eq!(stats.len(), 1);
         assert_eq!(stats[0].model, "claude-3-sonnet");
         assert_eq!(stats[0].request_count, 1);
diff --git a/src/components/usage/ModelStatsTable.tsx b/src/components/usage/ModelStatsTable.tsx
index 20f83e628..9f629d70b 100644
--- a/src/components/usage/ModelStatsTable.tsx
+++ b/src/components/usage/ModelStatsTable.tsx
@@ -11,12 +11,16 @@ import { useModelStats } from "@/lib/query/usage";
 import { fmtUsd } from "./format";
 
 interface ModelStatsTableProps {
+  appType?: string;
   refreshIntervalMs: number;
 }
 
-export function ModelStatsTable({ refreshIntervalMs }: ModelStatsTableProps) {
+export function ModelStatsTable({
+  appType,
+  refreshIntervalMs,
+}: ModelStatsTableProps) {
   const { t } = useTranslation();
-  const { data: stats, isLoading } = useModelStats({
+  const { data: stats, isLoading } = useModelStats(appType, {
     refetchInterval: refreshIntervalMs > 0 ? refreshIntervalMs : false,
   });
 
diff --git a/src/components/usage/ProviderStatsTable.tsx b/src/components/usage/ProviderStatsTable.tsx
index e21e1f6c0..993a436ba 100644
--- a/src/components/usage/ProviderStatsTable.tsx
+++ b/src/components/usage/ProviderStatsTable.tsx
@@ -11,14 +11,16 @@ import { useProviderStats } from "@/lib/query/usage";
 import { fmtUsd } from "./format";
 
 interface ProviderStatsTableProps {
+  appType?: string;
   refreshIntervalMs: number;
 }
 
 export function ProviderStatsTable({
+  appType,
   refreshIntervalMs,
 }: ProviderStatsTableProps) {
   const { t } = useTranslation();
-  const { data: stats, isLoading } = useProviderStats({
+  const { data: stats, isLoading } = useProviderStats(appType, {
     refetchInterval: refreshIntervalMs > 0 ? refreshIntervalMs : false,
   });
 
diff --git a/src/components/usage/RequestLogTable.tsx b/src/components/usage/RequestLogTable.tsx
index 5d6bd0c17..fe485ec20 100644
--- a/src/components/usage/RequestLogTable.tsx
+++ b/src/components/usage/RequestLogTable.tsx
@@ -29,6 +29,7 @@ import {
 } from "./format";
 
 interface RequestLogTableProps {
+  appType?: string;
   refreshIntervalMs: number;
 }
 
@@ -37,7 +38,10 @@ const MAX_FIXED_RANGE_SECONDS = 30 * ONE_DAY_SECONDS;
 
 type TimeMode = "rolling" | "fixed";
 
-export function RequestLogTable({ refreshIntervalMs }: RequestLogTableProps) {
+export function RequestLogTable({
+  appType: dashboardAppType,
+  refreshIntervalMs,
+}: RequestLogTableProps) {
   const { t, i18n } = useTranslation();
   const queryClient = useQueryClient();
 
@@ -56,8 +60,14 @@ export function RequestLogTable({ refreshIntervalMs }: RequestLogTableProps) {
   const pageSize = 20;
   const [validationError, setValidationError] = useState<string | null>(null);
 
+  // When dashboard-level app filter is active (not "all"), override the local appType filter
+  const dashboardAppTypeActive = dashboardAppType && dashboardAppType !== "all";
+  const effectiveFilters: LogFilters = dashboardAppTypeActive
+    ? { ...appliedFilters, appType: dashboardAppType }
+    : appliedFilters;
+
   const { data: result, isLoading } = useRequestLogs({
-    filters: appliedFilters,
+    filters: effectiveFilters,
     timeMode: appliedTimeMode,
     rollingWindowSeconds: ONE_DAY_SECONDS,
     page,
@@ -174,13 +184,18 @@ export function RequestLogTable({ refreshIntervalMs }: RequestLogTableProps) {
       <div className="flex flex-col gap-4 rounded-lg border bg-card/50 p-4 backdrop-blur-sm">
         <div className="flex flex-wrap items-center gap-3">
           <Select
-            value={draftFilters.appType || "all"}
+            value={
+              dashboardAppTypeActive
+                ? dashboardAppType
+                : draftFilters.appType || "all"
+            }
             onValueChange={(v) =>
               setDraftFilters({
                 ...draftFilters,
                 appType: v === "all" ? undefined : v,
               })
             }
+            disabled={!!dashboardAppTypeActive}
           >
             <SelectTrigger className="w-[130px] bg-background">
               <SelectValue placeholder={t("usage.appType")} />
diff --git a/src/components/usage/UsageDashboard.tsx b/src/components/usage/UsageDashboard.tsx
index f11ba536d..d0ad19a7e 100644
--- a/src/components/usage/UsageDashboard.tsx
+++ b/src/components/usage/UsageDashboard.tsx
@@ -6,8 +6,8 @@ import { UsageTrendChart } from "./UsageTrendChart";
 import { RequestLogTable } from "./RequestLogTable";
 import { ProviderStatsTable } from "./ProviderStatsTable";
 import { ModelStatsTable } from "./ModelStatsTable";
-import { DataSourceBar } from "./DataSourceBar";
-import type { TimeRange } from "@/types/usage";
+import type { AppTypeFilter, TimeRange } from "@/types/usage";
+import { useUsageSummary } from "@/lib/query/usage";
 import { motion } from "framer-motion";
 import {
   BarChart3,
@@ -26,11 +26,21 @@ import {
   AccordionTrigger,
 } from "@/components/ui/accordion";
 import { PricingConfigPanel } from "@/components/usage/PricingConfigPanel";
+import { cn } from "@/lib/utils";
+import { fmtUsd, parseFiniteNumber } from "./format";
+
+const APP_FILTER_OPTIONS: AppTypeFilter[] = [
+  "all",
+  "claude",
+  "codex",
+  "gemini",
+];
 
 export function UsageDashboard() {
   const { t } = useTranslation();
   const queryClient = useQueryClient();
   const [timeRange, setTimeRange] = useState<TimeRange>("1d");
+  const [appType, setAppType] = useState<AppTypeFilter>("all");
   const [refreshIntervalMs, setRefreshIntervalMs] = useState(30000);
 
   const refreshIntervalOptionsMs = [0, 5000, 10000, 30000, 60000] as const;
@@ -47,6 +57,11 @@ export function UsageDashboard() {
 
   const days = timeRange === "1d" ? 1 : timeRange === "7d" ? 7 : 30;
 
+  // Summary data for the app filter bar
+  const { data: summaryData } = useUsageSummary(days, appType, {
+    refetchInterval: refreshIntervalMs > 0 ? refreshIntervalMs : false,
+  });
+
   return (
     <motion.div
       initial={{ opacity: 0, y: 10 }}
@@ -101,11 +116,49 @@ export function UsageDashboard() {
         </Tabs>
       </div>
 
-      <DataSourceBar refreshIntervalMs={refreshIntervalMs} />
+      {/* App type filter bar (replaces DataSourceBar) */}
+      <div className="rounded-xl border border-border/50 bg-card/40 backdrop-blur-sm p-4 space-y-3">
+        <div className="flex flex-wrap items-center gap-1.5">
+          {APP_FILTER_OPTIONS.map((type) => (
+            <button
+              key={type}
+              type="button"
+              onClick={() => setAppType(type)}
+              className={cn(
+                "px-4 py-1.5 rounded-lg text-sm font-medium transition-all",
+                appType === type
+                  ? "bg-primary/10 text-primary shadow-sm border border-primary/20"
+                  : "text-muted-foreground hover:text-primary hover:bg-muted/50 border border-transparent",
+              )}
+            >
+              {t(`usage.appFilter.${type}`)}
+            </button>
+          ))}
+        </div>
+        <div className="flex items-center gap-4 text-sm text-muted-foreground">
+          <span>
+            {(summaryData?.totalRequests ?? 0).toLocaleString()}{" "}
+            {t("usage.requestsLabel")}
+          </span>
+          <span className="text-border">|</span>
+          <span>
+            {fmtUsd(parseFiniteNumber(summaryData?.totalCost) ?? 0, 4)}{" "}
+            {t("usage.costLabel")}
+          </span>
+        </div>
+      </div>
 
-      <UsageSummaryCards days={days} refreshIntervalMs={refreshIntervalMs} />
+      <UsageSummaryCards
+        days={days}
+        appType={appType}
+        refreshIntervalMs={refreshIntervalMs}
+      />
 
-      <UsageTrendChart days={days} refreshIntervalMs={refreshIntervalMs} />
+      <UsageTrendChart
+        days={days}
+        appType={appType}
+        refreshIntervalMs={refreshIntervalMs}
+      />
 
       <div className="space-y-4">
         <Tabs defaultValue="logs" className="w-full">
@@ -132,15 +185,24 @@ export function UsageDashboard() {
             transition={{ delay: 0.2 }}
           >
             <TabsContent value="logs" className="mt-0">
-              <RequestLogTable refreshIntervalMs={refreshIntervalMs} />
+              <RequestLogTable
+                appType={appType}
+                refreshIntervalMs={refreshIntervalMs}
+              />
             </TabsContent>
 
             <TabsContent value="providers" className="mt-0">
-              <ProviderStatsTable refreshIntervalMs={refreshIntervalMs} />
+              <ProviderStatsTable
+                appType={appType}
+                refreshIntervalMs={refreshIntervalMs}
+              />
             </TabsContent>
 
             <TabsContent value="models" className="mt-0">
-              <ModelStatsTable refreshIntervalMs={refreshIntervalMs} />
+              <ModelStatsTable
+                appType={appType}
+                refreshIntervalMs={refreshIntervalMs}
+              />
             </TabsContent>
           </motion.div>
         </Tabs>
diff --git a/src/components/usage/UsageSummaryCards.tsx b/src/components/usage/UsageSummaryCards.tsx
index a281b2f2c..1e7d58f60 100644
--- a/src/components/usage/UsageSummaryCards.tsx
+++ b/src/components/usage/UsageSummaryCards.tsx
@@ -8,16 +8,18 @@ import { fmtUsd, parseFiniteNumber } from "./format";
 
 interface UsageSummaryCardsProps {
   days: number;
+  appType?: string;
   refreshIntervalMs: number;
 }
 
 export function UsageSummaryCards({
   days,
+  appType,
   refreshIntervalMs,
 }: UsageSummaryCardsProps) {
   const { t } = useTranslation();
 
-  const { data: summary, isLoading } = useUsageSummary(days, {
+  const { data: summary, isLoading } = useUsageSummary(days, appType, {
     refetchInterval: refreshIntervalMs > 0 ? refreshIntervalMs : false,
   });
 
diff --git a/src/components/usage/UsageTrendChart.tsx b/src/components/usage/UsageTrendChart.tsx
index ba66a83f4..7344c62b7 100644
--- a/src/components/usage/UsageTrendChart.tsx
+++ b/src/components/usage/UsageTrendChart.tsx
@@ -20,15 +20,17 @@ import {
 
 interface UsageTrendChartProps {
   days: number;
+  appType?: string;
   refreshIntervalMs: number;
 }
 
 export function UsageTrendChart({
   days,
+  appType,
   refreshIntervalMs,
 }: UsageTrendChartProps) {
   const { t, i18n } = useTranslation();
-  const { data: trends, isLoading } = useUsageTrends(days, {
+  const { data: trends, isLoading } = useUsageTrends(days, appType, {
     refetchInterval: refreshIntervalMs > 0 ? refreshIntervalMs : false,
   });
 
diff --git a/src/i18n/locales/en.json b/src/i18n/locales/en.json
index 1236959d5..f5e4b850b 100644
--- a/src/i18n/locales/en.json
+++ b/src/i18n/locales/en.json
@@ -1019,6 +1019,14 @@
     "stream": "Stream",
     "nonStream": "Non-stream",
     "source": "Source",
+    "requestsLabel": "requests",
+    "costLabel": "total cost",
+    "appFilter": {
+      "all": "All",
+      "claude": "Claude Code",
+      "codex": "Codex",
+      "gemini": "Gemini"
+    },
     "dataSources": "Data Sources",
     "dataSource": {
       "proxy": "Proxy",
diff --git a/src/i18n/locales/ja.json b/src/i18n/locales/ja.json
index 5a3545c95..8f7852655 100644
--- a/src/i18n/locales/ja.json
+++ b/src/i18n/locales/ja.json
@@ -1019,6 +1019,14 @@
     "stream": "ストリーム",
     "nonStream": "非ストリーム",
     "source": "ソース",
+    "requestsLabel": "リクエスト",
+    "costLabel": "合計コスト",
+    "appFilter": {
+      "all": "すべて",
+      "claude": "Claude Code",
+      "codex": "Codex",
+      "gemini": "Gemini"
+    },
     "dataSources": "データソース",
     "dataSource": {
       "proxy": "プロキシ",
diff --git a/src/i18n/locales/zh.json b/src/i18n/locales/zh.json
index f6cd70a42..6ec175cd6 100644
--- a/src/i18n/locales/zh.json
+++ b/src/i18n/locales/zh.json
@@ -1019,6 +1019,14 @@
     "stream": "流",
     "nonStream": "非流",
     "source": "来源",
+    "requestsLabel": "次请求",
+    "costLabel": "总成本",
+    "appFilter": {
+      "all": "全部",
+      "claude": "Claude Code",
+      "codex": "Codex",
+      "gemini": "Gemini"
+    },
     "dataSources": "数据来源",
     "dataSource": {
       "proxy": "代理",
diff --git a/src/lib/api/usage.ts b/src/lib/api/usage.ts
index 981af57d2..1ff974705 100644
--- a/src/lib/api/usage.ts
+++ b/src/lib/api/usage.ts
@@ -50,23 +50,25 @@ export const usageApi = {
   getUsageSummary: async (
     startDate?: number,
     endDate?: number,
+    appType?: string,
   ): Promise<UsageSummary> => {
-    return invoke("get_usage_summary", { startDate, endDate });
+    return invoke("get_usage_summary", { startDate, endDate, appType });
   },
 
   getUsageTrends: async (
     startDate?: number,
     endDate?: number,
+    appType?: string,
   ): Promise<DailyStats[]> => {
-    return invoke("get_usage_trends", { startDate, endDate });
+    return invoke("get_usage_trends", { startDate, endDate, appType });
   },
 
-  getProviderStats: async (): Promise<ProviderStats[]> => {
-    return invoke("get_provider_stats");
+  getProviderStats: async (appType?: string): Promise<ProviderStats[]> => {
+    return invoke("get_provider_stats", { appType });
   },
 
-  getModelStats: async (): Promise<ModelStats[]> => {
-    return invoke("get_model_stats");
+  getModelStats: async (appType?: string): Promise<ModelStats[]> => {
+    return invoke("get_model_stats", { appType });
   },
 
   getRequestLogs: async (
diff --git a/src/lib/query/usage.ts b/src/lib/query/usage.ts
index 180c264d8..84babb1a3 100644
--- a/src/lib/query/usage.ts
+++ b/src/lib/query/usage.ts
@@ -34,10 +34,14 @@ type RequestLogsKey = {
 // Query keys
 export const usageKeys = {
   all: ["usage"] as const,
-  summary: (days: number) => [...usageKeys.all, "summary", days] as const,
-  trends: (days: number) => [...usageKeys.all, "trends", days] as const,
-  providerStats: () => [...usageKeys.all, "provider-stats"] as const,
-  modelStats: () => [...usageKeys.all, "model-stats"] as const,
+  summary: (days: number, appType?: string) =>
+    [...usageKeys.all, "summary", days, appType ?? "all"] as const,
+  trends: (days: number, appType?: string) =>
+    [...usageKeys.all, "trends", days, appType ?? "all"] as const,
+  providerStats: (appType?: string) =>
+    [...usageKeys.all, "provider-stats", appType ?? "all"] as const,
+  modelStats: (appType?: string) =>
+    [...usageKeys.all, "model-stats", appType ?? "all"] as const,
   logs: (key: RequestLogsKey, page: number, pageSize: number) =>
     [
       ...usageKeys.all,
@@ -67,44 +71,59 @@ const getWindow = (days: number) => {
 };
 
 // Hooks
-export function useUsageSummary(days: number, options?: UsageQueryOptions) {
+export function useUsageSummary(
+  days: number,
+  appType?: string,
+  options?: UsageQueryOptions,
+) {
+  const effectiveAppType = appType === "all" ? undefined : appType;
   return useQuery({
-    queryKey: usageKeys.summary(days),
+    queryKey: usageKeys.summary(days, appType),
     queryFn: () => {
       const { startDate, endDate } = getWindow(days);
-      return usageApi.getUsageSummary(startDate, endDate);
+      return usageApi.getUsageSummary(startDate, endDate, effectiveAppType);
     },
-    refetchInterval: options?.refetchInterval ?? DEFAULT_REFETCH_INTERVAL_MS, // 每30秒自动刷新
-    refetchIntervalInBackground: options?.refetchIntervalInBackground ?? false, // 后台不刷新
-  });
-}
-
-export function useUsageTrends(days: number, options?: UsageQueryOptions) {
-  return useQuery({
-    queryKey: usageKeys.trends(days),
-    queryFn: () => {
-      const { startDate, endDate } = getWindow(days);
-      return usageApi.getUsageTrends(startDate, endDate);
-    },
-    refetchInterval: options?.refetchInterval ?? DEFAULT_REFETCH_INTERVAL_MS, // 每30秒自动刷新
+    refetchInterval: options?.refetchInterval ?? DEFAULT_REFETCH_INTERVAL_MS,
     refetchIntervalInBackground: options?.refetchIntervalInBackground ?? false,
   });
 }
 
-export function useProviderStats(options?: UsageQueryOptions) {
+export function useUsageTrends(
+  days: number,
+  appType?: string,
+  options?: UsageQueryOptions,
+) {
+  const effectiveAppType = appType === "all" ? undefined : appType;
   return useQuery({
-    queryKey: usageKeys.providerStats(),
-    queryFn: usageApi.getProviderStats,
-    refetchInterval: options?.refetchInterval ?? DEFAULT_REFETCH_INTERVAL_MS, // 每30秒自动刷新
+    queryKey: usageKeys.trends(days, appType),
+    queryFn: () => {
+      const { startDate, endDate } = getWindow(days);
+      return usageApi.getUsageTrends(startDate, endDate, effectiveAppType);
+    },
+    refetchInterval: options?.refetchInterval ?? DEFAULT_REFETCH_INTERVAL_MS,
     refetchIntervalInBackground: options?.refetchIntervalInBackground ?? false,
   });
 }
 
-export function useModelStats(options?: UsageQueryOptions) {
+export function useProviderStats(
+  appType?: string,
+  options?: UsageQueryOptions,
+) {
+  const effectiveAppType = appType === "all" ? undefined : appType;
   return useQuery({
-    queryKey: usageKeys.modelStats(),
-    queryFn: usageApi.getModelStats,
-    refetchInterval: options?.refetchInterval ?? DEFAULT_REFETCH_INTERVAL_MS, // 每30秒自动刷新
+    queryKey: usageKeys.providerStats(appType),
+    queryFn: () => usageApi.getProviderStats(effectiveAppType),
+    refetchInterval: options?.refetchInterval ?? DEFAULT_REFETCH_INTERVAL_MS,
+    refetchIntervalInBackground: options?.refetchIntervalInBackground ?? false,
+  });
+}
+
+export function useModelStats(appType?: string, options?: UsageQueryOptions) {
+  const effectiveAppType = appType === "all" ? undefined : appType;
+  return useQuery({
+    queryKey: usageKeys.modelStats(appType),
+    queryFn: () => usageApi.getModelStats(effectiveAppType),
+    refetchInterval: options?.refetchInterval ?? DEFAULT_REFETCH_INTERVAL_MS,
     refetchIntervalInBackground: options?.refetchIntervalInBackground ?? false,
   });
 }
diff --git a/src/types/usage.ts b/src/types/usage.ts
index 6b21e2b71..ca9b40a09 100644
--- a/src/types/usage.ts
+++ b/src/types/usage.ts
@@ -123,6 +123,8 @@ export interface ProviderLimitStatus {
 
 export type TimeRange = "1d" | "7d" | "30d";
 
+export type AppTypeFilter = "all" | "claude" | "codex" | "gemini";
+
 export interface StatsFilters {
   timeRange: TimeRange;
   providerId?: string;