# Chess.clock vs FOMO CHALLENGE

The clearest difference is in-app purchases: Chess.clock at none against FOMO CHALLENGE's 1. FOMO CHALLENGE's advantage is update cadence (weekly vs every 3 months) and iOS requirement (16.0 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. FOMO CHALLENGE sells 1 one-off in-app purchase. Chess.clock asks for nothing beyond the download.

Chess.clock ships an update every 3 months, FOMO CHALLENGE weekly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Chess.clock | FOMO CHALLENGE |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Size | 2 MB | 16 MB |
| Requires iOS | 26.2 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Lukas Paul Hering](https://appshunter.io/developer/1788259541) | [Ahmet Ertas](https://appshunter.io/developer/1875884639) |

## What reviewers say

### Chess.clock

[App page](https://appshunter.io/ios/app/chessclock/id6740070517)

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

**In-app purchases:** none


### FOMO CHALLENGE

[App page](https://appshunter.io/ios/app/fomo-challenge/id6758942242)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Extra Attempt | $0.99 | one-time |


## Frequently asked questions

### Is Chess.clock free?

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

### Is FOMO CHALLENGE free?

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

### Do Chess.clock or FOMO CHALLENGE have ads?

Neither Chess.clock nor FOMO CHALLENGE shows ads.

### Which is updated more often, Chess.clock or FOMO CHALLENGE?

Chess.clock ships an update every 3 months, and FOMO CHALLENGE weekly. Most recently, Chess.clock was updated on October 28, 2026 and FOMO CHALLENGE on October 25, 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.*