# CrossFit Aspera vs ChallengeBu!

The clearest difference is update cadence: ChallengeBu! at every 3 days against CrossFit Aspera's every 18 months. CrossFit Aspera's advantage is device support (3 vs 1) and iOS requirement (10.3 vs 16.4). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CrossFit Aspera ships an update every 18 months, ChallengeBu! every 3 days. The most recent releases landed on October 27, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | CrossFit Aspera | ChallengeBu! |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 3 days** |
| Size | 90 MB | 38 MB |
| Requires iOS | **10.3** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Esra Basardi](https://appshunter.io/developer/1273972294) | [Hazar Ustun](https://appshunter.io/developer/1885352713) |

## What reviewers say

### CrossFit Aspera

[App page](https://appshunter.io/ios/app/crossfit-aspera/id1539624103)

**Features:** macOS Compatibility

**In-app purchases:** none


### ChallengeBu!

[App page](https://appshunter.io/ios/app/challengebu/id6785916807)

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

**In-app purchases:** none


## Frequently asked questions

### Is CrossFit Aspera free?

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

### Is ChallengeBu! free?

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

### Do CrossFit Aspera or ChallengeBu! have ads?

Neither CrossFit Aspera nor ChallengeBu! shows ads.

### Which is updated more often, CrossFit Aspera or ChallengeBu!?

CrossFit Aspera ships an update every 18 months, and ChallengeBu! every 3 days. Most recently, CrossFit Aspera was updated on October 27, 2026 and ChallengeBu! on October 16, 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.*