# Chess Clock vs RD Chess Timer

The clearest difference is update cadence: RD Chess Timer at every 6 days against Chess Clock's every 6 months. Chess Clock's advantage is iOS requirement (15.1 vs 26.0). On price, ads, 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.

Chess Clock ships an update every 6 months, RD Chess Timer every 6 days. The most recent releases landed on September 20, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Chess Clock | RD Chess Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 days** |
| Size | 38 MB | 26 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Burak Can INCE](https://appshunter.io/developer/1796472626) | [Raghul S](https://appshunter.io/developer/1344469407) |

## What reviewers say

### Chess Clock

[App page](https://appshunter.io/ios/app/chess-clock-timer-for-chess/id6759971219)

**In-app purchases:** none


### RD Chess Timer

[App page](https://appshunter.io/ios/app/rd-chess-timer/id6760386789)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chess Clock free?

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

### Is RD Chess Timer free?

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

### Do Chess Clock or RD Chess Timer have ads?

Neither Chess Clock nor RD Chess Timer shows ads.

### Which is updated more often, Chess Clock or RD Chess Timer?

Chess Clock ships an update every 6 months, and RD Chess Timer every 6 days. Most recently, Chess Clock was updated on September 20, 2026 and RD Chess Timer on September 21, 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.*