# RD Chess Timer vs Flag

The clearest difference is in-app purchases: RD Chess Timer at none against Flag's 1. Flag's advantage is update cadence (every 2 days vs every 6 days) and iOS requirement (18.6 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Flag sells 1 one-off in-app purchase. RD Chess Timer asks for nothing beyond the download.

RD Chess Timer ships an update every 6 days, Flag every 2 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | RD Chess Timer | Flag |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 2 days** |
| Size | 26 MB | 51 MB |
| Requires iOS | 26.0 | **18.6** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Raghul S](https://appshunter.io/developer/1344469407) | [Anton Voropaiev](https://appshunter.io/developer/1817040513) |

## What reviewers say

### RD Chess Timer

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

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

**In-app purchases:** none


### Flag

[App page](https://appshunter.io/ios/app/flag-chess-clock-and-timer/id6767051898)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flag Pro | $4.99 | one-time |


## Frequently asked questions

### Is RD Chess Timer free?

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

### Is Flag free?

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

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

Neither RD Chess Timer nor Flag shows ads.

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

RD Chess Timer ships an update every 6 days, and Flag every 2 days. Most recently, RD Chess Timer was updated on November 5, 2026 and Flag on October 31, 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.*