# a.b.art vs 外星锁

The clearest difference is in-app purchases: a.b.art at none against 外星锁's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 外星锁 sells 2 one-off in-app purchases. a.b.art asks for nothing beyond the download.

a.b.art ships an update every 3 weeks, 外星锁 every 10 days. The most recent releases landed on October 26, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | a.b.art | 外星锁 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Size | 27 MB | 44 MB |
| Requires iOS | **9.0** | 10.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Xiamen ZStime Co., Ltd.](https://appshunter.io/developer/374142269) | [凯 李](https://appshunter.io/developer/1220733080) |

## What reviewers say

### a.b.art

[App page](https://appshunter.io/ios/app/abart/id1214587577)

**Features:** macOS Compatibility

**In-app purchases:** none


### 外星锁

[App page](https://appshunter.io/ios/app/id1517289808)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 人证合一开锁 | $0.99 | one-time |
| 商业版会员 | $499.99 | one-time |


## Frequently asked questions

### Is a.b.art free?

a.b.art is free to download, with no in-app purchases.

### Is 外星锁 free?

外星锁 is free to download, with in-app purchases available.

### Do a.b.art or 外星锁 have ads?

Neither a.b.art nor 外星锁 shows ads.

### Which is updated more often, a.b.art or 外星锁?

a.b.art ships an update every 3 weeks, and 外星锁 every 10 days. Most recently, a.b.art was updated on October 26, 2026 and 外星锁 on September 9, 2026.

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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.*