diff --git a/platforms/react-native/sample/src/App.tsx b/platforms/react-native/sample/src/App.tsx
index 2a309ec3..221064c9 100644
--- a/platforms/react-native/sample/src/App.tsx
+++ b/platforms/react-native/sample/src/App.tsx
@@ -49,6 +49,10 @@ import type {ProductVariant, ShopifyProduct} from '../@types';
 import ErrorBoundary from './ErrorBoundary';
 import env from 'react-native-config';
 import {createDebugLogger} from './utils';
+import {
+  createStorefrontApiUrl,
+  normalizeStorefrontDomain,
+} from './storefrontUrl';
 import {useShopifyEventHandlers} from './hooks/useCheckoutEventHandlers';
 import {useE2ECartBootstrap} from './hooks/useE2ECartBootstrap';
 import {E2ETestIds} from './e2e/testIds';
@@ -59,7 +63,12 @@ function configured(value: string | undefined) {
   return value ? 'configured' : 'missing';
 }
 
-const storefrontApiVersion = env.API_VERSION ?? env.STOREFRONT_VERSION;
+const storefrontApiVersion = env.API_VERSION ?? env.STOREFRONT_VERSION ?? '';
+const storefrontDomain = normalizeStorefrontDomain(env.STOREFRONT_DOMAIN);
+const storefrontApiUrl = createStorefrontApiUrl(
+  env.STOREFRONT_DOMAIN,
+  storefrontApiVersion,
+);
 
 console.groupCollapsed('ENV');
 log('STOREFRONT_DOMAIN:', configured(env.STOREFRONT_DOMAIN));
@@ -101,7 +110,7 @@ const styles = StyleSheet.create({
 export const cache = new InMemoryCache();
 
 const client = new ApolloClient({
-  uri: `https://${env.STOREFRONT_DOMAIN}/api/${storefrontApiVersion}/graphql.json`,
+  uri: storefrontApiUrl,
   cache,
   headers: {
     'Content-Type': 'application/json',
@@ -408,7 +417,7 @@ function AppWithCheckoutKit({children}: PropsWithChildren) {
               },
       },
       acceleratedCheckouts: {
-        storefrontDomain: env.STOREFRONT_DOMAIN!,
+        storefrontDomain,
         storefrontAccessToken: env.STOREFRONT_ACCESS_TOKEN!,
         /**
          * We're reading the hardcoded customer email and phone number from the
diff --git a/platforms/react-native/sample/src/__tests__/storefrontUrl.test.ts b/platforms/react-native/sample/src/__tests__/storefrontUrl.test.ts
new file mode 100644
index 00000000..993c183b
--- /dev/null
+++ b/platforms/react-native/sample/src/__tests__/storefrontUrl.test.ts
@@ -0,0 +1,40 @@
+import {
+  createStorefrontApiUrl,
+  normalizeStorefrontDomain,
+} from '../storefrontUrl';
+
+describe('storefrontUrl', () => {
+  describe('normalizeStorefrontDomain', () => {
+    it('keeps a bare storefront domain unchanged', () => {
+      expect(normalizeStorefrontDomain('shop.example.myshopify.com')).toBe(
+        'shop.example.myshopify.com',
+      );
+    });
+
+    it('removes an HTTPS scheme from the storefront domain', () => {
+      expect(normalizeStorefrontDomain('https://shop.example.myshopify.com')).toBe(
+        'shop.example.myshopify.com',
+      );
+    });
+
+    it('removes trailing slashes from the storefront domain', () => {
+      expect(normalizeStorefrontDomain('https://shop.example.myshopify.com/')).toBe(
+        'shop.example.myshopify.com',
+      );
+    });
+  });
+
+  describe('createStorefrontApiUrl', () => {
+    it('adds HTTPS to a bare storefront domain', () => {
+      expect(
+        createStorefrontApiUrl('shop.example.myshopify.com', '2026-04'),
+      ).toBe('https://shop.example.myshopify.com/api/2026-04/graphql.json');
+    });
+
+    it('does not add HTTPS when the storefront domain already includes it', () => {
+      expect(
+        createStorefrontApiUrl('https://shop.example.myshopify.com', '2026-04'),
+      ).toBe('https://shop.example.myshopify.com/api/2026-04/graphql.json');
+    });
+  });
+});
diff --git a/platforms/react-native/sample/src/storefrontUrl.ts b/platforms/react-native/sample/src/storefrontUrl.ts
new file mode 100644
index 00000000..c82011cc
--- /dev/null
+++ b/platforms/react-native/sample/src/storefrontUrl.ts
@@ -0,0 +1,18 @@
+export function normalizeStorefrontDomain(
+  storefrontDomain: string | undefined,
+): string {
+  const domainWithoutScheme = (storefrontDomain ?? '')
+    .trim()
+    .replace(/^https?:\/\//i, '');
+
+  return domainWithoutScheme.split('/')[0] ?? '';
+}
+
+export function createStorefrontApiUrl(
+  storefrontDomain: string | undefined,
+  apiVersion: string,
+): string {
+  return `https://${normalizeStorefrontDomain(
+    storefrontDomain,
+  )}/api/${apiVersion}/graphql.json`;
+}
diff --git a/scripts/setup_storefront_env b/scripts/setup_storefront_env
index 79729d7f..eab0f360 100755
--- a/scripts/setup_storefront_env
+++ b/scripts/setup_storefront_env
@@ -148,6 +148,13 @@ is_placeholder_value() {
     [[ "$value" == "your-public-storefront-access-token" ]]
 }
 
+normalize_storefront_domain() {
+  local value
+  value="$(strip_outer_quotes "$1")"
+  value="$(printf '%s' "$value" | sed -E 's#^[Hh][Tt][Tt][Pp][Ss]?://##; s#/.*$##')"
+  printf '%s' "$value"
+}
+
 env_fallback() {
   local key="$1"
   printf '%s' "${!key:-}"
@@ -389,6 +396,7 @@ load_values() {
     "$(read_env_value STOREFRONT_DOMAIN "$REACT_NATIVE_ENV")" \
     "$(read_env_value STOREFRONT_DOMAIN "$SWIFT_DEMO_XCCONFIG")" \
     "$(read_env_value STOREFRONT_DOMAIN "$SWIFT_ACCELERATED_XCCONFIG")")"
+  STOREFRONT_DOMAIN_VALUE="$(normalize_storefront_domain "$STOREFRONT_DOMAIN_VALUE")"
 
   STOREFRONT_ACCESS_TOKEN_VALUE="$(first_config_value \
     "$(required_config_value STOREFRONT_ACCESS_TOKEN)" \
diff --git a/scripts/test_setup_storefront_env b/scripts/test_setup_storefront_env
index 0dc6b7aa..b1c95014 100755
--- a/scripts/test_setup_storefront_env
+++ b/scripts/test_setup_storefront_env
@@ -135,12 +135,16 @@ test_required_values_only() {
   fixture="$(make_fixture)"
   output="$fixture/output.log"
 
-  STOREFRONT_DOMAIN=synthetic-store.example.myshopify.com \
+  STOREFRONT_DOMAIN=https://synthetic-store.example.myshopify.com/ \
     STOREFRONT_ACCESS_TOKEN=synthetic-token \
     "$fixture/scripts/setup_storefront_env" --skip-optional-prompts >"$output" 2>&1
 
   assert_output_is_sanitized "$output"
   assert_file_exists "$fixture/.env"
+  assert_contains "$fixture/.env" "STOREFRONT_DOMAIN=synthetic-store.example.myshopify.com"
+  assert_contains "$fixture/platforms/android/samples/CheckoutKitAndroidDemo/.env" "STOREFRONT_DOMAIN=synthetic-store.example.myshopify.com"
+  assert_contains "$fixture/platforms/react-native/sample/.env" "STOREFRONT_DOMAIN=\"synthetic-store.example.myshopify.com\""
+  assert_contains "$fixture/platforms/swift/Samples/CheckoutKitSwiftDemo/Storefront.xcconfig" "STOREFRONT_DOMAIN = synthetic-store.example.myshopify.com"
   assert_contains "$fixture/.env" "STOREFRONT_MERCHANT_IDENTIFIER="
   assert_contains "$fixture/.env" "CUSTOMER_ACCOUNT_API_CLIENT_ID="
   assert_contains "$fixture/.env" "CUSTOMER_ACCOUNT_API_SHOP_ID="