# UB vs chou chou

The clearest difference is in-app purchases: UB at none against chou chou's 3. UB also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). chou chou's advantage is update cadence (daily vs every 2 months). On price and device support there is nothing between them.

Both are free to download. chou chou sells 3 in-app purchases, starting at $3.99 per month. UB asks for nothing beyond the download.

UB ships an update every 2 months, chou chou daily. The most recent releases landed on October 27, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | UB | chou chou |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Daily** |
| Size | 49 MB | 47 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [UNTIL BLANK LTD](https://appshunter.io/developer/1666254730) | [Tak Hong Tse](https://appshunter.io/developer/1895599337) |

## What reviewers say

### UB

[App page](https://appshunter.io/ios/app/ub/id1666254728)

**In-app purchases:** none


### chou chou

[App page](https://appshunter.io/ios/app/chou-chou/id6764014509)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一個月會員訂閱 | $3.99 | per month |
| 訂閱三個月會員 | $6.99 | per 3 months |
| 訂閱六個月會員 | $9.99 | per 6 months |


## Frequently asked questions

### Is UB free?

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

### Is chou chou free?

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

### Do UB or chou chou have ads?

chou chou shows ads; UB does not.

### Which is updated more often, UB or chou chou?

UB ships an update every 2 months, and chou chou daily. Most recently, UB was updated on October 27, 2026 and chou chou on October 13, 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.*