# Big Timer vs ChessClock

The clearest difference is ads: ChessClock at none against Big Timer's shown. Big Timer's advantage is iOS requirement (13.0 vs 18.0). On price, 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.

## The numbers

| Metric | Big Timer | ChessClock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | — |
| Size | 33 MB | 1 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Seulki Eom](https://appshunter.io/developer/1718927408) | [Thanh Nguyen](https://appshunter.io/developer/1042188999) |

## What reviewers say

### Big Timer

[App page](https://appshunter.io/ios/app/big-timer-focus-and-countdown/id6746898648)

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

**In-app purchases:** none


### ChessClock

[App page](https://appshunter.io/ios/app/chessclock-high-accuracy/id6759374656)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Big Timer free?

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

### Is ChessClock free?

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

### Do Big Timer or ChessClock have ads?

Big Timer shows ads; ChessClock does not.

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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.*