# Blitz Clock vs Chess Clock

The clearest difference is in-app purchases: Blitz Clock at none against Chess Clock's 1. Chess Clock's advantage is update cadence (every 2 weeks vs every 3 months) and iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

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

Blitz Clock ships an update every 3 months, Chess Clock every 2 weeks. The most recent releases landed on October 9, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Blitz Clock | Chess Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 1 MB | 14 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mekala Vamsi Krishna](https://appshunter.io/developer/1855017172) | [Damir Stuhec](https://appshunter.io/developer/1161505919) |

## What reviewers say

### Blitz Clock

[App page](https://appshunter.io/ios/app/blitz-clock/id6761469832)

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

**In-app purchases:** none


### Chess Clock

[App page](https://appshunter.io/ios/app/chess-clock-flag/id6790894606)

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is Blitz Clock free?

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

### Is Chess Clock free?

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

### Do Blitz Clock or Chess Clock have ads?

Neither Blitz Clock nor Chess Clock shows ads.

### Which is updated more often, Blitz Clock or Chess Clock?

Blitz Clock ships an update every 3 months, and Chess Clock every 2 weeks. Most recently, Blitz Clock was updated on October 9, 2026 and Chess Clock on September 27, 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.*