# AI钥匙串 vs OpenPig

The clearest difference is in-app purchases: OpenPig at none against AI钥匙串's 1. OpenPig also leads on iOS requirement (13.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. AI钥匙串 sells 1 one-off in-app purchase. OpenPig asks for nothing beyond the download.

AI钥匙串 ships an update every 6 weeks, OpenPig every 2 months. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | AI钥匙串 | OpenPig |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Size | 5 MB | 21 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [欣悦 王](https://appshunter.io/developer/1880251143) | [ZhiEra LLC](https://appshunter.io/developer/6771887320) |

## What reviewers say

### AI钥匙串

[App page](https://appshunter.io/ios/app/ai/id6778318694)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Key Cards | $0.99 | one-time |


### OpenPig

[App page](https://appshunter.io/ios/app/openpig/id6789591721)

**In-app purchases:** none


## Frequently asked questions

### Is AI钥匙串 free?

AI钥匙串 is free to download, with in-app purchases available.

### Is OpenPig free?

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

### Do AI钥匙串 or OpenPig have ads?

Neither AI钥匙串 nor OpenPig shows ads.

### Which is updated more often, AI钥匙串 or OpenPig?

AI钥匙串 ships an update every 6 weeks, and OpenPig every 2 months. Most recently, AI钥匙串 was updated on October 6, 2026 and OpenPig on October 3, 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.*