From 5141be1c3f25da7371e5142fa8226c647a201378 Mon Sep 17 00:00:00 2001
From: Huang Xin <chrox.huang@gmail.com>
Date: Wed, 10 Dec 2025 22:34:23 +0800
Subject: [PATCH] fix(iap): don't initialize billing on Android without google
 play service, closes #2630 (#2677)

---
 .../android/src/main/java/BillingManager.kt   | 17 ++++++++++++
 .../src/main/java/NativeBridgePlugin.kt       |  8 ++++++
 .../tauri-plugin-native-bridge/build.rs       |  1 +
 .../ios/Sources/NativeBridgePlugin.swift      |  4 +++
 .../commands/iap_is_available.toml            | 13 +++++++++
 .../permissions/autogenerated/reference.md    | 27 +++++++++++++++++++
 .../permissions/default.toml                  |  1 +
 .../permissions/schemas/schema.json           | 16 +++++++++--
 .../src/commands.rs                           |  7 +++++
 .../tauri-plugin-native-bridge/src/desktop.rs |  4 +++
 .../tauri-plugin-native-bridge/src/lib.rs     |  1 +
 .../tauri-plugin-native-bridge/src/mobile.rs  |  8 ++++++
 .../tauri-plugin-native-bridge/src/models.rs  |  6 +++++
 .../app/user/components/AccountActions.tsx    |  4 ++-
 apps/readest-app/src/app/user/page.tsx        |  9 +++++--
 .../src/hooks/useAvailablePlans.ts            |  8 +++---
 .../src/libs/payment/iap/client.ts            |  5 ++++
 apps/readest-app/src/utils/iap.ts             |  9 +++++++
 18 files changed, 140 insertions(+), 8 deletions(-)
 create mode 100644 apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/autogenerated/commands/iap_is_available.toml

diff --git a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/android/src/main/java/BillingManager.kt b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/android/src/main/java/BillingManager.kt
index 666fd052..996d5132 100644
--- a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/android/src/main/java/BillingManager.kt
+++ b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/android/src/main/java/BillingManager.kt
@@ -8,6 +8,8 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
+import com.google.android.gms.common.GoogleApiAvailability
+import com.google.android.gms.common.ConnectionResult
 import java.text.SimpleDateFormat
 import java.util.*
 
@@ -16,12 +18,27 @@ class BillingManager(private val activity: Activity) : PurchasesUpdatedListener
     private val productsCache = mutableMapOf<String, ProductDetails>()
     private var purchaseCallback: ((PurchaseData?) -> Unit)? = null
     private val scope = CoroutineScope(Dispatchers.Main)
+    private val isGooglePlayAvailable: Boolean by lazy {
+        val availability = GoogleApiAvailability.getInstance()
+        val resultCode = availability.isGooglePlayServicesAvailable(activity)
+        resultCode == ConnectionResult.SUCCESS
+    }
     
     companion object {
         private const val TAG = "BillingManager"
     }
 
+    fun isBillingAvailable(): Boolean {
+        return isGooglePlayAvailable
+    }
+
     fun initialize(callback: (Boolean) -> Unit) {
+        if (!isGooglePlayAvailable) {
+            Log.d(TAG, "Google Play Services not available, skipping billing setup")
+            callback(false)
+            return
+        }
+
         billingClient = BillingClient.newBuilder(activity)
             .setListener(this)
             .enablePendingPurchases()
diff --git a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/android/src/main/java/NativeBridgePlugin.kt b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/android/src/main/java/NativeBridgePlugin.kt
index f10354bb..83c8681a 100644
--- a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/android/src/main/java/NativeBridgePlugin.kt
+++ b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/android/src/main/java/NativeBridgePlugin.kt
@@ -511,6 +511,14 @@ class NativeBridgePlugin(private val activity: Activity): Plugin(activity) {
         invoke.resolve(ret)
     }
 
+    @Command
+    fun iap_is_available(invoke: Invoke) {
+        val isAvailable = billingManager.isBillingAvailable()
+        val result = JSObject()
+        result.put("available", isAvailable)
+        invoke.resolve(result)
+    }
+
     @Command
     fun iap_initialize(invoke: Invoke) {
         billingManager.initialize { success ->
diff --git a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/build.rs b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/build.rs
index 29ea7714..c61a92e9 100644
--- a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/build.rs
+++ b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/build.rs
@@ -9,6 +9,7 @@ const COMMANDS: &[&str] = &[
     "get_sys_fonts_list",
     "intercept_keys",
     "lock_screen_orientation",
+    "iap_is_available",
     "iap_initialize",
     "iap_fetch_products",
     "iap_purchase_product",
diff --git a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/ios/Sources/NativeBridgePlugin.swift b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/ios/Sources/NativeBridgePlugin.swift
index 6f713d7c..78457c23 100644
--- a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/ios/Sources/NativeBridgePlugin.swift
+++ b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/ios/Sources/NativeBridgePlugin.swift
@@ -706,6 +706,10 @@ class NativeBridgePlugin: Plugin {
     }
   }
 
+  @objc public func iap_is_available(_ invoke: Invoke) {
+    invoke.resolve(["available": true])
+  }
+
   @objc public func iap_initialize(_ invoke: Invoke) {
     StoreKitManager.shared.initialize()
     invoke.resolve(["success": true])
diff --git a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/autogenerated/commands/iap_is_available.toml b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/autogenerated/commands/iap_is_available.toml
new file mode 100644
index 00000000..1a330ede
--- /dev/null
+++ b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/autogenerated/commands/iap_is_available.toml
@@ -0,0 +1,13 @@
+# Automatically generated - DO NOT EDIT!
+
+"$schema" = "../../schemas/schema.json"
+
+[[permission]]
+identifier = "allow-iap-is-available"
+description = "Enables the iap_is_available command without any pre-configured scope."
+commands.allow = ["iap_is_available"]
+
+[[permission]]
+identifier = "deny-iap-is-available"
+description = "Denies the iap_is_available command without any pre-configured scope."
+commands.deny = ["iap_is_available"]
diff --git a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/autogenerated/reference.md b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/autogenerated/reference.md
index fbed275b..2a1b59e4 100644
--- a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/autogenerated/reference.md
+++ b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/autogenerated/reference.md
@@ -14,6 +14,7 @@ Default permissions for the plugin
 - `allow-get-sys-fonts-list`
 - `allow-intercept-keys`
 - `allow-lock-screen-orientation`
+- `allow-iap-is-available`
 - `allow-iap-initialize`
 - `allow-iap-fetch-products`
 - `allow-iap-purchase-product`
@@ -409,6 +410,32 @@ Denies the iap_initialize command without any pre-configured scope.
 <tr>
 <td>
 
+`native-bridge:allow-iap-is-available`
+
+</td>
+<td>
+
+Enables the iap_is_available command without any pre-configured scope.
+
+</td>
+</tr>
+
+<tr>
+<td>
+
+`native-bridge:deny-iap-is-available`
+
+</td>
+<td>
+
+Denies the iap_is_available command without any pre-configured scope.
+
+</td>
+</tr>
+
+<tr>
+<td>
+
 `native-bridge:allow-iap-purchase-product`
 
 </td>
diff --git a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/default.toml b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/default.toml
index c4229af8..83b54f92 100644
--- a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/default.toml
+++ b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/default.toml
@@ -11,6 +11,7 @@ permissions = [
   "allow-get-sys-fonts-list",
   "allow-intercept-keys",
   "allow-lock-screen-orientation",
+  "allow-iap-is-available",
   "allow-iap-initialize",
   "allow-iap-fetch-products",
   "allow-iap-purchase-product",
diff --git a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/schemas/schema.json b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/schemas/schema.json
index f04cf37b..a3684de1 100644
--- a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/schemas/schema.json
+++ b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/permissions/schemas/schema.json
@@ -462,6 +462,18 @@
           "const": "deny-iap-initialize",
           "markdownDescription": "Denies the iap_initialize command without any pre-configured scope."
         },
+        {
+          "description": "Enables the iap_is_available command without any pre-configured scope.",
+          "type": "string",
+          "const": "allow-iap-is-available",
+          "markdownDescription": "Enables the iap_is_available command without any pre-configured scope."
+        },
+        {
+          "description": "Denies the iap_is_available command without any pre-configured scope.",
+          "type": "string",
+          "const": "deny-iap-is-available",
+          "markdownDescription": "Denies the iap_is_available command without any pre-configured scope."
+        },
         {
           "description": "Enables the iap_purchase_product command without any pre-configured scope.",
           "type": "string",
@@ -655,10 +667,10 @@
           "markdownDescription": "Denies the use_background_audio command without any pre-configured scope."
         },
         {
-          "description": "Default permissions for the plugin\n#### This default permission set includes:\n\n- `allow-auth-with-safari`\n- `allow-auth-with-custom-tab`\n- `allow-copy-uri-to-path`\n- `allow-use-background-audio`\n- `allow-install-package`\n- `allow-set-system-ui-visibility`\n- `allow-get-status-bar-height`\n- `allow-get-sys-fonts-list`\n- `allow-intercept-keys`\n- `allow-lock-screen-orientation`\n- `allow-iap-initialize`\n- `allow-iap-fetch-products`\n- `allow-iap-purchase-product`\n- `allow-iap-restore-purchases`\n- `allow-get-system-color-scheme`\n- `allow-get-safe-area-insets`\n- `allow-get-screen-brightness`\n- `allow-set-screen-brightness`\n- `allow-get-external-sdcard-path`\n- `allow-open-external-url`\n- `allow-select-directory`\n- `allow-request-manage-storage-permission`\n- `allow-register-listener`\n- `allow-remove-listener`\n- `allow-check-permissions`\n- `allow-request-permissions`\n- `allow-checkPermissions`\n- `allow-requestPermissions`",
+          "description": "Default permissions for the plugin\n#### This default permission set includes:\n\n- `allow-auth-with-safari`\n- `allow-auth-with-custom-tab`\n- `allow-copy-uri-to-path`\n- `allow-use-background-audio`\n- `allow-install-package`\n- `allow-set-system-ui-visibility`\n- `allow-get-status-bar-height`\n- `allow-get-sys-fonts-list`\n- `allow-intercept-keys`\n- `allow-lock-screen-orientation`\n- `allow-iap-is-available`\n- `allow-iap-initialize`\n- `allow-iap-fetch-products`\n- `allow-iap-purchase-product`\n- `allow-iap-restore-purchases`\n- `allow-get-system-color-scheme`\n- `allow-get-safe-area-insets`\n- `allow-get-screen-brightness`\n- `allow-set-screen-brightness`\n- `allow-get-external-sdcard-path`\n- `allow-open-external-url`\n- `allow-select-directory`\n- `allow-request-manage-storage-permission`\n- `allow-register-listener`\n- `allow-remove-listener`\n- `allow-check-permissions`\n- `allow-request-permissions`\n- `allow-checkPermissions`\n- `allow-requestPermissions`",
           "type": "string",
           "const": "default",
-          "markdownDescription": "Default permissions for the plugin\n#### This default permission set includes:\n\n- `allow-auth-with-safari`\n- `allow-auth-with-custom-tab`\n- `allow-copy-uri-to-path`\n- `allow-use-background-audio`\n- `allow-install-package`\n- `allow-set-system-ui-visibility`\n- `allow-get-status-bar-height`\n- `allow-get-sys-fonts-list`\n- `allow-intercept-keys`\n- `allow-lock-screen-orientation`\n- `allow-iap-initialize`\n- `allow-iap-fetch-products`\n- `allow-iap-purchase-product`\n- `allow-iap-restore-purchases`\n- `allow-get-system-color-scheme`\n- `allow-get-safe-area-insets`\n- `allow-get-screen-brightness`\n- `allow-set-screen-brightness`\n- `allow-get-external-sdcard-path`\n- `allow-open-external-url`\n- `allow-select-directory`\n- `allow-request-manage-storage-permission`\n- `allow-register-listener`\n- `allow-remove-listener`\n- `allow-check-permissions`\n- `allow-request-permissions`\n- `allow-checkPermissions`\n- `allow-requestPermissions`"
+          "markdownDescription": "Default permissions for the plugin\n#### This default permission set includes:\n\n- `allow-auth-with-safari`\n- `allow-auth-with-custom-tab`\n- `allow-copy-uri-to-path`\n- `allow-use-background-audio`\n- `allow-install-package`\n- `allow-set-system-ui-visibility`\n- `allow-get-status-bar-height`\n- `allow-get-sys-fonts-list`\n- `allow-intercept-keys`\n- `allow-lock-screen-orientation`\n- `allow-iap-is-available`\n- `allow-iap-initialize`\n- `allow-iap-fetch-products`\n- `allow-iap-purchase-product`\n- `allow-iap-restore-purchases`\n- `allow-get-system-color-scheme`\n- `allow-get-safe-area-insets`\n- `allow-get-screen-brightness`\n- `allow-set-screen-brightness`\n- `allow-get-external-sdcard-path`\n- `allow-open-external-url`\n- `allow-select-directory`\n- `allow-request-manage-storage-permission`\n- `allow-register-listener`\n- `allow-remove-listener`\n- `allow-check-permissions`\n- `allow-request-permissions`\n- `allow-checkPermissions`\n- `allow-requestPermissions`"
         }
       ]
     }
diff --git a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/commands.rs b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/commands.rs
index 09fb772d..7cc77679 100644
--- a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/commands.rs
+++ b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/commands.rs
@@ -84,6 +84,13 @@ pub(crate) async fn lock_screen_orientation<R: Runtime>(
     app.native_bridge().lock_screen_orientation(payload)
 }
 
+#[command]
+pub(crate) async fn iap_is_available<R: Runtime>(
+    app: AppHandle<R>,
+) -> Result<IAPIsAvailableResponse> {
+    app.native_bridge().iap_is_available()
+}
+
 #[command]
 pub(crate) async fn iap_initialize<R: Runtime>(
     app: AppHandle<R>,
diff --git a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/desktop.rs b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/desktop.rs
index e23e9f2a..2550e2e1 100644
--- a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/desktop.rs
+++ b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/desktop.rs
@@ -74,6 +74,10 @@ impl<R: Runtime> NativeBridge<R> {
         Err(crate::Error::UnsupportedPlatformError)
     }
 
+    pub fn iap_is_available(&self) -> crate::Result<IAPIsAvailableResponse> {
+        Err(crate::Error::UnsupportedPlatformError)
+    }
+
     pub fn iap_initialize(
         &self,
         _payload: IAPInitializeRequest,
diff --git a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/lib.rs b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/lib.rs
index cef8dfdc..91701051 100644
--- a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/lib.rs
+++ b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/lib.rs
@@ -65,6 +65,7 @@ pub fn init<R: Runtime>() -> TauriPlugin<R> {
             commands::get_sys_fonts_list,
             commands::intercept_keys,
             commands::lock_screen_orientation,
+            commands::iap_is_available,
             commands::iap_initialize,
             commands::iap_fetch_products,
             commands::iap_purchase_product,
diff --git a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/mobile.rs b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/mobile.rs
index c4af527e..6f3e7b45 100644
--- a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/mobile.rs
+++ b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/mobile.rs
@@ -113,6 +113,14 @@ impl<R: Runtime> NativeBridge<R> {
     }
 }
 
+impl<R: Runtime> NativeBridge<R> {
+    pub fn iap_is_available(&self) -> crate::Result<IAPIsAvailableResponse> {
+        self.0
+            .run_mobile_plugin("iap_is_available", ())
+            .map_err(Into::into)
+    }
+}
+
 impl<R: Runtime> NativeBridge<R> {
     pub fn iap_initialize(
         &self,
diff --git a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/models.rs b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/models.rs
index b591269a..c19ba668 100644
--- a/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/models.rs
+++ b/apps/readest-app/src-tauri/plugins/tauri-plugin-native-bridge/src/models.rs
@@ -113,6 +113,12 @@ pub struct Purchase {
     pub purchase_state: String, // "purchased", "pending", "cancelled", "restored"
 }
 
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct IAPIsAvailableResponse {
+    pub available: bool,
+}
+
 #[derive(Debug, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct IAPInitializeRequest {
diff --git a/apps/readest-app/src/app/user/components/AccountActions.tsx b/apps/readest-app/src/app/user/components/AccountActions.tsx
index 8fbc5c44..fdeecedb 100644
--- a/apps/readest-app/src/app/user/components/AccountActions.tsx
+++ b/apps/readest-app/src/app/user/components/AccountActions.tsx
@@ -47,6 +47,7 @@ const DeleteConfirmationModal: React.FC<DeleteConfirmationModalProps> = ({
 
 interface AccountActionsProps {
   userPlan: UserPlan;
+  iapAvailable: boolean;
   onLogout: () => void;
   onResetPassword: () => void;
   onUpdateEmail: () => void;
@@ -58,6 +59,7 @@ interface AccountActionsProps {
 
 const AccountActions: React.FC<AccountActionsProps> = ({
   userPlan,
+  iapAvailable,
   onLogout,
   onResetPassword,
   onUpdateEmail,
@@ -89,7 +91,7 @@ const AccountActions: React.FC<AccountActionsProps> = ({
         }}
       />
       <div className='flex flex-col gap-4 md:grid md:grid-cols-2 lg:grid-cols-3'>
-        {appService?.hasIAP ? (
+        {appService?.hasIAP && iapAvailable ? (
           <button
             onClick={onRestorePurchase}
             className='w-full rounded-lg bg-blue-100 px-6 py-3 font-medium text-blue-600 transition-colors hover:bg-blue-200 md:w-auto'
diff --git a/apps/readest-app/src/app/user/page.tsx b/apps/readest-app/src/app/user/page.tsx
index de65b198..1a11f5ec 100644
--- a/apps/readest-app/src/app/user/page.tsx
+++ b/apps/readest-app/src/app/user/page.tsx
@@ -73,7 +73,7 @@ const ProfilePage = () => {
   const { handleLogout, handleResetPassword, handleUpdateEmail, handleConfirmDelete } =
     useUserActions();
 
-  const { availablePlans } = useAvailablePlans({
+  const { availablePlans, iapAvailable } = useAvailablePlans({
     hasIAP: appService?.hasIAP || false,
     onError: useCallback(
       (message: string) => {
@@ -284,12 +284,17 @@ const ProfilePage = () => {
                       <PlansComparison
                         availablePlans={availablePlans}
                         userPlan={userProfilePlan}
-                        onSubscribe={appService.hasIAP ? handleIAPSubscribe : handleStripeSubscribe}
+                        onSubscribe={
+                          appService.hasIAP && iapAvailable
+                            ? handleIAPSubscribe
+                            : handleStripeSubscribe
+                        }
                       />
                     </div>
                     <div className='flex flex-col gap-y-8 px-6'>
                       <AccountActions
                         userPlan={userProfilePlan}
+                        iapAvailable={iapAvailable}
                         onLogout={handleLogout}
                         onResetPassword={handleResetPassword}
                         onUpdateEmail={handleUpdateEmail}
diff --git a/apps/readest-app/src/hooks/useAvailablePlans.ts b/apps/readest-app/src/hooks/useAvailablePlans.ts
index fd366a1f..d53a9ccc 100644
--- a/apps/readest-app/src/hooks/useAvailablePlans.ts
+++ b/apps/readest-app/src/hooks/useAvailablePlans.ts
@@ -1,5 +1,5 @@
 import { useEffect, useState } from 'react';
-import { fetchAndTransformIAPPlans } from '@/libs/payment/iap/client';
+import { fetchAndTransformIAPPlans, isIAPAvailable } from '@/libs/payment/iap/client';
 import { fetchStripePlans } from '@/libs/payment/stripe/client';
 import { AvailablePlan } from '@/types/quota';
 import { stubTranslation as _ } from '@/utils/misc';
@@ -20,6 +20,7 @@ interface UseAvailablePlansParams {
 
 export const useAvailablePlans = ({ hasIAP, onError }: UseAvailablePlansParams) => {
   const [availablePlans, setAvailablePlans] = useState<AvailablePlan[]>([]);
+  const [iapAvailable, setIapAvailable] = useState(false);
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<Error | null>(null);
 
@@ -29,9 +30,10 @@ export const useAvailablePlans = ({ hasIAP, onError }: UseAvailablePlansParams)
       setError(null);
 
       try {
-        if (hasIAP) {
+        if (hasIAP && (await isIAPAvailable())) {
           const plans = await fetchAndTransformIAPPlans(IAP_PRODUCT_IDS);
           setAvailablePlans(plans);
+          setIapAvailable(true);
         } else {
           const plans = await fetchStripePlans();
           setAvailablePlans(plans);
@@ -52,5 +54,5 @@ export const useAvailablePlans = ({ hasIAP, onError }: UseAvailablePlansParams)
     fetchPlans();
   }, [hasIAP, onError]);
 
-  return { availablePlans, loading, error };
+  return { availablePlans, iapAvailable, loading, error };
 };
diff --git a/apps/readest-app/src/libs/payment/iap/client.ts b/apps/readest-app/src/libs/payment/iap/client.ts
index 16cdfa9c..2f26c2c3 100644
--- a/apps/readest-app/src/libs/payment/iap/client.ts
+++ b/apps/readest-app/src/libs/payment/iap/client.ts
@@ -17,6 +17,11 @@ export const getPurchaseVerifyParams = (purchase: IAPPurchase) => {
   });
 };
 
+export const isIAPAvailable = async () => {
+  const available = await IAPService.isAvailable();
+  return available;
+};
+
 export const purchaseIAPProduct = async (productId: string) => {
   const iapService = new IAPService();
   const purchase = await iapService.purchaseProduct(productId);
diff --git a/apps/readest-app/src/utils/iap.ts b/apps/readest-app/src/utils/iap.ts
index cb715feb..8d5c81d6 100644
--- a/apps/readest-app/src/utils/iap.ts
+++ b/apps/readest-app/src/utils/iap.ts
@@ -35,6 +35,10 @@ interface AndroidPurchase {
 
 export type IAPPurchase = IAPPurchaseBase & (IOSPurchase | AndroidPurchase);
 
+interface IAPIsAvailableResponse {
+  available: boolean;
+}
+
 interface InitializeRequest {
   publicKey?: string;
 }
@@ -64,6 +68,11 @@ interface RestorePurchasesResponse {
 }
 
 export class IAPService {
+  static async isAvailable(): Promise<boolean> {
+    const result = await invoke<IAPIsAvailableResponse>('plugin:native-bridge|iap_is_available');
+    return result.available;
+  }
+
   async initialize(): Promise<boolean> {
     const result = await invoke<InitializeResponse>('plugin:native-bridge|iap_initialize', {
       payload: {} as InitializeRequest,