App Lock vs Black Box
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
App Lock
Secure your personal privacy by locking any app with a password. This app also offers parental controls to monitor child's phone activity, prevent app deletion, and restrict new installations. Enhance your device's security by restricting account and password changes.
- App Lock
- Password Lock
- Parental Controls
- Prevent App Deletion
- Disable New App Installation
- Restrict Account Changes
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Are you concerned about the potential leakage of your personal privacy? Do you want to monitor your child's phone activities at any time? This application can provide assistance for you! FEATURES - App Lock: Lock any app to protect your privacy. - Password Lock: Set a password to secure and encrypt access to any app, enhancing security. - Parental Controls: Prevent app deletion and disable the installation of new apps. - Additional Protections: Restrict changes to account information and device passwords. SUBSCRIPTION TERM Confirm Subscription: Payment will be charged to your iTunes account upon confirmation. Manage Subscription: You can manage or cancel your subscription in your iTunes & App Store account settings. Auto-Renewal: Your subscription will automatically renew within 24 hours before the end of the current period. To cancel renewal, turn it off at least 24 hours before the period ends. Cancellation is not allowed during the active subscription period. Free Trial: After the trial ends, your subscription will auto-renew to the Premium plan. To avoid being charged, cancel at least 24 hours before the trial ends. If you subscribe during the trial, the remaining trial period will end immediately. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://web.creativespirit0x.com/apps/AppH/PrivacyPolicy Whether you're looking to safeguard your privacy or monitor your child's phone usage, this app can meet your needs. Give it a try now! If you encounter any issues or have suggestions during use, feel free to provide feedback within the app.
Black Box
Secure your phone by locking and restricting access to sensitive applications. Protect your private data with advanced password protection and prevent unauthorized app usage or in-app purchases. Enjoy comprehensive digital privacy with an easy-to-use interface.
- App locking with password protection
- App disappearance for hidden access
- App usage restrictions
- Secure privacy with advanced passwords
- Payment locking for in-app purchases
- Intuitive interface
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Black Box: Easily lock and restrict apps, protect your private data with one click. Secure your phone with a password. 100% safe and private! Don't want others to see your privacy? Use our lock and restrict features to keep your apps and data hidden from others. Try this most secure app lock and give your phone 100% privacy protection. 【Key Features】 App Locking: Set password protection for sensitive apps like social media, photo galleries, etc., protecting your privacy anytime, anywhere. App Disappearance: No one but you can find your apps unless you actively reveal them. App Restrictions: Limit app installation, deletion, in-app purchases, control app visibility everywhere, and lock app usage. Secure Privacy: The app lock features advanced security passwords, helping you lock apps and prevent others from casually viewing in-app data. Payment Locking: Lock App Store in-app purchases to avoid accidental payments or prevent your children from buying games. 【Why Choose Black Box?】 100% Safe and Reliable: Uses advanced encryption technology Easy to Use: Intuitive interface design, effortless to get started Comprehensive Protection: Guards your privacy from apps to files Continuous Updates: We constantly improve features to provide you with the best experience Download Black Box now and enjoy true digital privacy! Your encouragement drives our progress! Stay tuned for more powerful features coming soon. If you encounter any issues or have suggestions while using the app, please feel free to provide feedback within the app. blackbox@whohub.cn Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://blackbox.whohub.cn/policy/privacy Use the most reliable app lock to protect your privacy, easily safeguard your digital privacy. Use the app lock to lock apps or protect apps from being discovered, ensuring your security.
Screenshots
Verdict
The clearest difference is in-app purchases: Black Box at none against App Lock's 8. Black Box also leads on ads (none vs shown) and update cadence (every 3 days vs every 3 weeks). App Lock's advantage is ratings volume (1.2K vs 37) and review sentiment (76% vs 67%). On price, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. App Lock sells 5 in-app purchases, starting at $4.99 per month. Black Box asks for nothing beyond the download.
Black Box holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: App Lock has 1.2K ratings behind it against 37, so its average is the more settled of the two. Written reviews complicate that: 76% of App Lock's written reviews are positive against 67% of Black Box's, so the app with the better star average is not the one people write more warmly about.
App Lock ships an update every 3 weeks, Black Box every 3 days. The most recent releases landed on September 23, 2026 and August 28, 2026 respectively.
| Parameter | App Lock | Black Box |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (1.2K ratings) | 4.8 (37 ratings) — better |
| Positive reviews | 76.5% of reviews — better | 66.7% of reviews |
| Number of ratings | 1.2K — better | 37 |
| Update frequency | Every 3 weeks | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 58 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | 俊杰 刘 | 俊涛 刘 |
Customer experience
App Lock
Black Box
Bugs and requests
App Lock
Reported bugs
2 issues- Locked apps not showing in settings
- Missed calls and messages when app is locked
Requested features
2 requests- Paid version with more features
- Ability to lock more than 50 apps
Black Box
Not enough reviews yet to summarise bugs or requests.
In-app purchases
App Lock
- Monthly Membership3 Days trial$4.991 Month
- Monthly Membership2 variants$7.991 Month
- Yearly Membership$9.991 Year
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- Yearly Membership3 Days trial3 variants$19.991 Year
- Lifetime Membership$34.99
Black Box
No in-app purchases






