# Challenge Log vs WUZU

The clearest difference is in-app purchases: Challenge Log at none against WUZU's 2. WUZU's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. WUZU sells 2 in-app purchases, starting at $2.99 per month. Challenge Log asks for nothing beyond the download.

Challenge Log ships an update fortnightly, WUZU weekly. The most recent releases landed on October 30, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Challenge Log | WUZU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Size | 91 MB | 99 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [YOSHIKI KOKUBO](https://appshunter.io/developer/1496137532) | [chung-Ying Xie](https://appshunter.io/developer/1292685929) |

## What reviewers say

### Challenge Log

[App page](https://appshunter.io/ios/app/challenge-log/id6748856273)

**In-app purchases:** none


### WUZU

[App page](https://appshunter.io/ios/app/wuzu/id6757849464)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $2.99 | per month |
| Annual Pro | $29.99 | per year |


## Frequently asked questions

### Is Challenge Log free?

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

### Is WUZU free?

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

### Do Challenge Log or WUZU have ads?

Challenge Log shows ads; WUZU does not.

### Which is updated more often, Challenge Log or WUZU?

Challenge Log ships an update fortnightly, and WUZU weekly. Most recently, Challenge Log was updated on October 30, 2026 and WUZU on October 26, 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.*