iOS儿童类应用审核被拒求助：Unity3D开发遇苹果准则1.3问题

Hey there, I’ve tackled this exact App Store rejection issue for a kids’ iOS app built with Unity before, so let’s walk through how to fix it properly:

First, Clarify Apple’s Core Requirement #

Apple’s Guideline 1.3 mandates: For apps categorized as Kids, any action that takes users out of the app (like social media links, web redirects) or commercial behavior (in-app purchases, ad-related jumps) must first pass parent verification before executing.

Step-by-Step Solutions #

1. Block All App-Exit Actions Uniformly #

Whether it’s custom links you added or Admob ad redirects (even with TagForChildDirectedTreatment=true, you still need extra checks), you need a universal interception layer:

• For every Application.OpenURL() call in your Unity code, trigger the parent verification flow first. Only execute the redirect if verification passes.
• For Admob ad clicks (like interstitial or rewarded ad redirects), listen to the OnAdClicked callback. Stop the default redirect, launch your verification process, and manually open the ad’s target URL only after approval. Note: You may need to retrieve the ad’s target URL via Admob’s SDK methods or adjust the SDK’s behavior to wait for your verification.

2. Implement a Compliant Parent Verification Mechanism #

Apple accepts several verification methods—pick the one that fits your app’s flow:

• PIN Code Verification: Let parents set a 4+ digit PIN on first use. Every time an exit action is triggered, show a PIN input dialog (build this with Unity’s UGUI or a simple modal).

  // Unity C# example for PIN verification
  private string _pendingActionURL; // Store the URL to open after verification
  
  public void TriggerRedirectWithVerification(string url)
  {
      _pendingActionURL = url;
      // Show your custom PIN input UI here
      // (e.g., a UGUI panel with input field and confirm button)
  }
  
  public void OnPINSubmitted(string inputPin)
  {
      string savedPIN = PlayerPrefs.GetString("ParentPIN", "");
      if (!string.IsNullOrEmpty(savedPIN) && inputPin == savedPIN)
      {
          // Verification passed—execute the redirect
          Application.OpenURL(_pendingActionURL);
      }
      else
      {
          // Show error message (e.g., "Incorrect PIN, please try again")
          Debug.Log("Invalid parent verification PIN");
      }
  }
  

• Parent Gate: Create a simple adult-level question (e.g., "What’s 18 + 22?") that requires a correct answer to pass. No need to store a PIN—great for apps that want to avoid setup steps.
• Biometric Verification: Use iOS’s Touch ID/Face ID via Unity’s UnityEngine.iOS.LocalAuthentication API. This works if the parent has biometrics set up on their device, but keep in mind not all users will have this enabled.

3. Audit All Potential Violations #

• Ads: Double-check that Admob is serving kid-appropriate ads (your TagForChildDirectedTreatment=true should handle this, but confirm via test ads). Ensure every ad click triggers verification before redirecting.
• In-App Purchases: If your app has IAPs, even free content unlocks that are part of commercial flows need parent verification. Add the check before any IAP prompt appears.
• Social/Web Links: Any links to external platforms (YouTube, Facebook, etc.) must go through verification first—no exceptions.

4. Optimize Your Submission Notes #

When you resubmit, use the "Notes to Reviewers" section to clearly explain your fixes:

• State explicitly that you’ve added parent verification for all app-exit actions and commercial behaviors.
• Mention which verification method you implemented (PIN, parent gate, biometrics).
• Attach screenshots of your verification flow to help reviewers quickly validate your changes.

Testing Tips #

• Test every possible exit path: Ad clicks, link taps, IAP triggers—make sure each one stops for verification.
• Test across iOS versions (iOS 15+, 16+) to ensure the verification logic works consistently.
• Test failed verification cases: Confirm that users can’t bypass the check to exit the app or complete commercial actions.

内容的提问来源于stack exchange，提问作者phucbac