diff --git a/bun.lock b/bun.lock
index 2be75ad..8d9cd35 100644
--- a/bun.lock
+++ b/bun.lock
@@ -17,6 +17,9 @@
     "packages/effect-fc": {
       "name": "effect-fc",
       "version": "0.2.1",
+      "devDependencies": {
+        "@effect/platform-browser": "^0.74.0",
+      },
       "peerDependencies": {
         "@types/react": "^19.2.0",
         "effect": "^3.19.0",
@@ -655,6 +658,8 @@
 
     "anymatch/picomatch": ["picomatch@2.3.1", "", {}, "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA=="],
 
+    "effect-fc/@effect/platform-browser": ["@effect/platform-browser@0.74.0", "", { "dependencies": { "multipasta": "^0.2.7" }, "peerDependencies": { "@effect/platform": "^0.94.0", "effect": "^3.19.13" } }, "sha512-PAgkg5L5cASQpScA0SZTSy543MVA4A9kmpVCjo2fCINLRpTeuCFAOQHgPmw8dKHnYS0yGs2TYn7AlrhhqQ5o3g=="],
+
     "readdirp/picomatch": ["picomatch@2.3.1", "", {}, "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA=="],
 
     "recast/source-map": ["source-map@0.6.1", "", {}, "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="],
diff --git a/packages/effect-fc/package.json b/packages/effect-fc/package.json
index 788ae0a..fcd03e0 100644
--- a/packages/effect-fc/package.json
+++ b/packages/effect-fc/package.json
@@ -37,6 +37,9 @@
     "clean:dist": "rm -rf dist",
     "clean:modules": "rm -rf node_modules"
   },
+  "devDependencies": {
+    "@effect/platform-browser": "^0.74.0"
+  },
   "peerDependencies": {
     "@types/react": "^19.2.0",
     "effect": "^3.19.0",
diff --git a/packages/effect-fc/src/Query.ts b/packages/effect-fc/src/Query.ts
index 15d3efd..9aea2d7 100644
--- a/packages/effect-fc/src/Query.ts
+++ b/packages/effect-fc/src/Query.ts
@@ -16,6 +16,7 @@ extends Pipeable.Pipeable {
     readonly initialProgress: P
 
     readonly staleTime: Duration.DurationInput
+    readonly refreshOnWindowFocus: boolean
 
     readonly latestKey: Subscribable.Subscribable<Option.Option<K>>
     readonly fiber: Subscribable.Subscribable<Option.Option<Fiber.Fiber<A, E>>>
@@ -47,6 +48,7 @@ extends Pipeable.Class() implements Query<K, A, E, R, P> {
         readonly initialProgress: P,
 
         readonly staleTime: Duration.DurationInput,
+        readonly refreshOnWindowFocus: boolean,
 
         readonly latestKey: SubscriptionRef.SubscriptionRef<Option.Option<K>>,
         readonly fiber: SubscriptionRef.SubscriptionRef<Option.Option<Fiber.Fiber<A, E>>>,
@@ -59,17 +61,22 @@ extends Pipeable.Class() implements Query<K, A, E, R, P> {
     }
 
     get run(): Effect.Effect<void> {
-        return Stream.runForEach(this.key, key => this.interrupt.pipe(
-            Effect.andThen(SubscriptionRef.set(this.latestKey, Option.some(key))),
-            Effect.andThen(this.latestFinalResult),
-            Effect.andThen(previous => this.startCached(key, Option.isSome(previous)
-                ? Result.willFetch(previous.value) as Result.Final<A, E, P>
-                : Result.initial()
-            )),
-            Effect.andThen(sub => Effect.forkScoped(this.watch(key, sub))),
-        )).pipe(
+        return Effect.all([
+            Stream.runForEach(this.key, key => this.fetchSubscribable(key)),
+
+            Effect.promise(() => import("@effect/platform-browser")).pipe(
+                Effect.andThen(({ BrowserStream }) => this.refreshOnWindowFocus
+                    ? Stream.runForEach(
+                        BrowserStream.fromEventListenerWindow("focus"),
+                        () => this.refreshSubscribable,
+                    )
+                    : Effect.void
+                ),
+                Effect.catchAllDefect(() => Effect.void),
+            ),
+        ], { concurrency: "unbounded" }).pipe(
+            Effect.ignore,
             this.runSemaphore.withPermits(1),
-            Effect.provide(this.context),
         )
     }
 
@@ -269,6 +276,7 @@ export declare namespace make {
         readonly f: (key: NoInfer<K>) => Effect.Effect<A, E, Result.forkEffect.InputContext<R, NoInfer<P>>>
         readonly initialProgress?: P
         readonly staleTime?: Duration.DurationInput
+        readonly refreshOnWindowFocus?: boolean
     }
 }
 
@@ -288,6 +296,7 @@ export const make = Effect.fnUntraced(function* <K extends Query.AnyKey, A, E =
         options.initialProgress as P,
 
         options.staleTime ?? client.defaultStaleTime,
+        options.refreshOnWindowFocus ?? client.defaultRefreshOnWindowFocus,
 
         yield* SubscriptionRef.make(Option.none<K>()),
         yield* SubscriptionRef.make(Option.none<Fiber.Fiber<A, E>>()),
diff --git a/packages/effect-fc/src/QueryClient.ts b/packages/effect-fc/src/QueryClient.ts
index 3cc95b8..19517b7 100644
--- a/packages/effect-fc/src/QueryClient.ts
+++ b/packages/effect-fc/src/QueryClient.ts
@@ -11,6 +11,7 @@ export interface QueryClientService extends Pipeable.Pipeable {
     readonly cache: SubscriptionRef.SubscriptionRef<HashMap.HashMap<QueryClientCacheKey, QueryClientCacheEntry>>
     readonly gcTime: Duration.DurationInput
     readonly defaultStaleTime: Duration.DurationInput
+    readonly defaultRefreshOnWindowFocus: boolean
 }
 
 export class QueryClient extends Effect.Service<QueryClient>()("@effect-fc/QueryClient/QueryClient", {
@@ -26,6 +27,7 @@ implements QueryClientService {
         readonly cache: SubscriptionRef.SubscriptionRef<HashMap.HashMap<QueryClientCacheKey, QueryClientCacheEntry>>,
         readonly gcTime: Duration.DurationInput,
         readonly defaultStaleTime: Duration.DurationInput,
+        readonly defaultRefreshOnWindowFocus: boolean,
         readonly runSemaphore: Effect.Semaphore,
     ) {
         super()
@@ -38,6 +40,7 @@ export declare namespace make {
     export interface Options {
         readonly gcTime?: Duration.DurationInput
         readonly defaultStaleTime?: Duration.DurationInput
+        readonly defaultRefreshOnWindowFocus?: boolean
     }
 }
 
@@ -46,6 +49,7 @@ export const make = Effect.fnUntraced(function* (options: make.Options = {}): Ef
         yield* SubscriptionRef.make(HashMap.empty<QueryClientCacheKey, QueryClientCacheEntry>()),
         options.gcTime ?? "5 minutes",
         options.defaultStaleTime ?? "0 minutes",
+        options.defaultRefreshOnWindowFocus ?? true,
         yield* Effect.makeSemaphore(1),
     )
 })