# Super App Lock：MystNote vs Black Box

The clearest difference is ads: Black Box at none against Super App Lock：MystNote's shown. Black Box also leads on update cadence (every 3 days vs every 11 days) and review sentiment (67% vs 50%). Super App Lock：MystNote's advantage is rating (5.0 vs 4.8). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Super App Lock：MystNote holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Black Box has 37 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 50% of Super App Lock：MystNote'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.

Super App Lock：MystNote ships an update every 11 days, Black Box every 3 days. The most recent releases landed on September 19, 2026 and August 28, 2026 respectively.

## The numbers

| Metric | Super App Lock：MystNote | Black Box |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/super-app-lockmystnote/id6479701537/reviews)** | [4.8 (37 ratings)](https://appshunter.io/ios/app/black-box-lock-restrict-apps/id6547836962/reviews) |
| Number of ratings | 5 | **37** |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 11 days | **Every 3 days** |
| Monetization | Ad-supported | **Free** |
| Size | 19 MB | 68 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [学斌 林](https://appshunter.io/developer/1718398670) | [俊涛 刘](https://appshunter.io/developer/1702439770) |

## What reviewers say

### Super App Lock：MystNote

[App page](https://appshunter.io/ios/app/super-app-lockmystnote/id6479701537)

Secure your phone's private data with this app locker. It offers automatic protection, emergency redirection, and a confusion method for unauthorized access attempts. Manage your children's app usage with parental controls.

**Highlights:** Lock any app or game, Automatic privacy protection, Emergency app redirection, Fake password confusion method, Parental control for children's mode, Simple and clear interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Black Box

[App page](https://appshunter.io/ios/app/black-box-lock-restrict-apps/id6547836962)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Super App Lock：MystNote free?

Super App Lock：MystNote is free to download, with no in-app purchases.

### Is Black Box free?

Black Box is free to download, with no in-app purchases.

### Which has better reviews, Super App Lock：MystNote or Black Box?

Super App Lock：MystNote is rated higher. Super App Lock：MystNote averages 5.0 out of 5 from 5 ratings, while Black Box averages 4.8 from 37 ratings.

### Do Super App Lock：MystNote or Black Box have ads?

Super App Lock：MystNote shows ads; Black Box does not.

### Which is updated more often, Super App Lock：MystNote or Black Box?

Super App Lock：MystNote ships an update every 11 days, and Black Box every 3 days. Most recently, Super App Lock：MystNote was updated on September 19, 2026 and Black Box on August 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*