No competitor app store mentions in content, UI, or metadata

Apple guideline 3.1.1 explicitly prohibits iOS apps from containing UI elements that link to or promote competing app stores. Google Play mirrors this restriction for Android. The violation is usually not malicious — it originates from a shared React Native or Flutter codebase where a developer adds a cross-platform promotional banner without platform-gating it. But reviewers catch it systematically: a hardcoded play.google.com link in an iOS build is a trivial pattern match that triggers rejection with minimal reviewer judgment.

Platform-gate all store references so each build only references its own store:

import { Platform, Linking } from 'react-native';

const STORE_URL = Platform.select({
  ios: 'https://apps.apple.com/app/id[YOUR_APP_ID]',
  android: 'https://play.google.com/store/apps/details?id=[YOUR_PACKAGE]',
});

// Usage
<TouchableOpacity onPress={() => Linking.openURL(STORE_URL)}>
  <Text>Rate the app</Text>
</TouchableOpacity>

Search for hardcoded competitor URLs: grep -r 'play.google.com\|apps.apple.com' src/ --include="*.tsx". Any URL that references the other platform's store must be removed from native UI code. Cross-platform promotion belongs on your marketing website, not inside the native app.