# 拼豆 vs KinetStudy

The clearest difference is price: 拼豆 at Free against KinetStudy's $0.99. KinetStudy's advantage is in-app purchases (none vs 7) and iOS requirement (15.6 vs 17.0). On update cadence, ads and device support there is nothing between them.

拼豆 is free to download; KinetStudy costs $0.99 up front. 拼豆 sells 7 one-off in-app purchases. KinetStudy asks for nothing beyond the download.

拼豆 ships an update every 2 weeks, KinetStudy every 3 weeks. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 拼豆 | KinetStudy |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 439 MB | 8 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Guangzhou Territory Technology Co., Ltd.](https://appshunter.io/developer/1852566771) | [俊杰 沈](https://appshunter.io/developer/6773175292) |

## What reviewers say

### 拼豆

[App page](https://appshunter.io/ios/app/id6770431613)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10钻石 | $0.99 | one-time |
| 60钻石 | $0.99 | one-time |
| 500钻石 | $6.99 | one-time |
| 715钻石 | $9.99 | one-time |
| 1345钻石 | $19.99 | one-time |
| 2100钻石 | $29.99 | one-time |
| 3690钻石 | $49.99 | one-time |


### KinetStudy

[App page](https://appshunter.io/ios/app/kinetstudy/id6797004663)

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

**In-app purchases:** none


## Frequently asked questions

### Is 拼豆 free?

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

### Is KinetStudy free?

KinetStudy costs $0.99, with no in-app purchases.

### Do 拼豆 or KinetStudy have ads?

Neither 拼豆 nor KinetStudy shows ads.

### Which is updated more often, 拼豆 or KinetStudy?

拼豆 ships an update every 2 weeks, and KinetStudy every 3 weeks. Most recently, 拼豆 was updated on October 11, 2026 and KinetStudy on October 7, 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.*