# 应用锁 vs Black Box

The clearest difference is in-app purchases: Black Box at none against 应用锁's 3. Black Box also leads on review sentiment (67% vs 33%) and update cadence (every 3 days vs every 2 weeks). 应用锁's advantage is iOS requirement (11.0 vs 16.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. 应用锁 sells 3 in-app purchases, starting at $0.99 per month. Black Box asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.4 for 应用锁 against 4.5 for Black Box. Both are backed by a comparable volume of ratings — 88 and 44 respectively. Written reviews are what separate them: 33% of 应用锁's written reviews are positive against 67% of Black Box's.

应用锁 ships an update every 2 weeks, Black Box every 3 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | 应用锁 | Black Box |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (88 ratings)](https://appshunter.io/ios/app/id1658955672/reviews) | **[4.5 (44 ratings)](https://appshunter.io/ios/app/black-box-lock-restrict-apps/id6547836962/reviews)** |
| Number of ratings | **88** | 44 |
| Positive reviews | 33.3% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | Subscription | **Free** |
| Size | 10 MB | 68 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [祥波 郑](https://appshunter.io/developer/1648493922) | [俊涛 刘](https://appshunter.io/developer/1702439770) |

## What reviewers say

### 应用锁

[App page](https://appshunter.io/ios/app/id1658955672)

Secure your apps, games, photos, videos, and contacts with PIN protection. Disguise app icons as calculators or other common utilities. Unlock advanced features through a subscription.

**Highlights:** Encrypt apps, games, photos, and videos, Hide contacts, Change app icons, PIN code protection, Advanced features available

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 按月订阅 | $0.99 | per month |
| 按年订阅 | $1.99 | per year |
| 永久会员 | $7.99 | one-time |


### 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 应用锁 free?

应用锁 is free to download, with in-app purchases available.

### Is Black Box free?

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

### Which has better reviews, 应用锁 or Black Box?

Black Box is rated higher. 应用锁 averages 4.4 out of 5 from 88 ratings, while Black Box averages 4.5 from 44 ratings.

### Do 应用锁 or Black Box have ads?

Neither 应用锁 nor Black Box shows ads.

### Which is updated more often, 应用锁 or Black Box?

应用锁 ships an update every 2 weeks, and Black Box every 3 days. Most recently, 应用锁 was updated on November 3, 2026 and Black Box on November 4, 2026.

---

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