Black Box vs iMF4.0
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
iMF4.0
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生产计划与调度、实时数据采集与监控、质量管理、设备维护、库存管理、工艺流程管理、报表与分析、移动端操作。生产计划与调度在MES系统中尤为重要，它负责协调和优化生产资源，确保生产过程高效顺畅。例如，通过MES系统的生产计划与调度功能，企业可以实时调整生产计划，合理分配生产任务，最大化利用生产资源，减少生产瓶颈，从而提高生产效率和产品质量。
Screenshots
Verdict
The clearest difference is update cadence: Black Box at every 3 days against iMF4.0's every 5 weeks. iMF4.0's advantage is device support (3 vs 1). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Black Box ships an update every 3 days, iMF4.0 every 5 weeks. The most recent releases landed on October 14, 2026 and September 24, 2026 respectively.
| Parameter | Black Box | iMF4.0 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (37 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 37 — better | — |
| Update frequency | Every 3 days — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 68 MB | 31 MB |
| Age rating | 4+ | 17+ |
| Developer | 俊涛 刘 | Guangdong Node Link Technology Co., Ltd. |
In-app purchases
Black Box
No in-app purchases
iMF4.0
No in-app purchases
