# Black Box vs Tstrs

The clearest difference is iOS requirement: Tstrs at 13.0 against Black Box's 16.0. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | Black Box | Tstrs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (37 ratings)](https://appshunter.io/ios/app/black-box-lock-restrict-apps/id6547836962/reviews)** | — |
| Number of ratings | **37** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Monetization | Free | — |
| Size | 68 MB | 2 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [俊涛 刘](https://appshunter.io/developer/1702439770) | [HONOUR (H.K.) ENGINEERING LIMITED](https://appshunter.io/developer/6792598938) |

## What reviewers say

### 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


### Tstrs

[App page](https://appshunter.io/ios/app/tstrs/id6792598936)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Black Box free?

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

### Is Tstrs free?

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

### Do Black Box or Tstrs have ads?

Neither Black Box nor Tstrs shows ads.

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