# Four Seconds vs Chess Clock Mobile

The clearest difference is ads: Four Seconds at none against Chess Clock Mobile's shown. Four Seconds also leads on monetization model (free vs ad-supported) and iOS requirement (10.0 vs 18.6). Chess Clock Mobile's advantage is update cadence (weekly vs every 22 months). On price, review sentiment, in-app purchases and device support there is nothing between them.

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

Four Seconds ships an update every 22 months, Chess Clock Mobile weekly. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Four Seconds | Chess Clock Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/four-seconds/id1280965840/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 22 months | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 24 MB | 23 MB |
| Requires iOS | **10.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Andrei Antonescu](https://appshunter.io/developer/1126352058) | [SUSTAINABLE DIGITAL IMPACT VENTURES LLC](https://appshunter.io/developer/1719727862) |

## What reviewers say

### Four Seconds

[App page](https://appshunter.io/ios/app/four-seconds/id1280965840)

Test your timing by stopping a timer at precisely four seconds. Compete with others on the leaderboard to see who has the best precision. It's a simple yet challenging game of skill.

**Highlights:** Precise timer stopping, Four-second challenge, Global leaderboard, Simple gameplay

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

**In-app purchases:** none


### Chess Clock Mobile

[App page](https://appshunter.io/ios/app/chess-clock-mobile/id6757285981)

A digital timer designed for chess games, available on iOS devices. It functions as a virtual chess clock for your iPhone or iPad.

**Highlights:** Digital chess clock, iOS compatible, Timer for chess games, Supports iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Four Seconds free?

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

### Is Chess Clock Mobile free?

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

### Do Four Seconds or Chess Clock Mobile have ads?

Chess Clock Mobile shows ads; Four Seconds does not.

### Which is updated more often, Four Seconds or Chess Clock Mobile?

Four Seconds ships an update every 22 months, and Chess Clock Mobile weekly. Most recently, Four Seconds was updated on October 2, 2026 and Chess Clock Mobile on October 4, 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.*