# achei vs Umi

The clearest difference is in-app purchases: achei at none against Umi's 9. Umi's advantage is update cadence (every 5 days vs every 2 weeks) and iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Umi sells 9 one-off in-app purchases. achei asks for nothing beyond the download.

achei ships an update every 2 weeks, Umi every 5 days. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | achei | Umi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Size | 17 MB | 60 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [WooSync (Shanghai) Technology Co., Ltd](https://appshunter.io/developer/1766014898) | [贵州柚米科技有限公司](https://appshunter.io/developer/1895140874) |

## What reviewers say

### achei

[App page](https://appshunter.io/ios/app/achei/id6670375901)

**Features:** macOS Compatibility

**In-app purchases:** none


### Umi

[App page](https://appshunter.io/ios/app/umi/id6763055704)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| umi币充值 | $0.99 | one-time |
| umi币充值 | $1.99 | one-time |
| umi币充值 | $3.99 | one-time |
| umi币充值 | $6.99 | one-time |
| umi币充值 | $14.99 | one-time |
| umi币充值 | $24.99 | one-time |
| umi币充值 | $59.99 | one-time |
| umi币充值 | $79.99 | one-time |
| umi币充值 | $99.99 | one-time |


## Frequently asked questions

### Is achei free?

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

### Is Umi free?

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

### Do achei or Umi have ads?

Neither achei nor Umi shows ads.

### Which is updated more often, achei or Umi?

achei ships an update every 2 weeks, and Umi every 5 days. Most recently, achei was updated on October 16, 2026 and Umi on October 24, 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.*