Users can block or mute other users

Apple's guideline 1.2 explicitly requires apps with user interaction features to offer users the ability to block abusive users. A direct messaging app, a commenting feature, or a following system without a block mechanism leaves users with no recourse against harassment. The reviewer will look for it, not find it, and reject. Beyond review compliance, a missing block feature has real safety consequences: users who cannot escape harassment churn immediately and leave negative reviews. The block relationship must be server-side — client-only blocks that reset on reinstall or across devices are not acceptable.

Add a block action to user profiles and message threads, enforced server-side.

// src/screens/UserProfileScreen.tsx
async function handleBlockUser(targetUserId: string) {
  await fetch('/api/users/block', {
    method: 'POST',
    body: JSON.stringify({ blocked_user_id: targetUserId }),
  });
  Alert.alert('User blocked', 'You will no longer see their content.');
  navigation.goBack();
}

In your API, filter blocked users from feed queries, message threads, and comment lists. Add a "Blocked Users" screen in Settings so users can review and unblock. Store the block relationship in a blocked_users table — never only in client state.