# ClockMate vs Chess Clock Duo

The clearest difference is iOS requirement: ClockMate at 15.0 against Chess Clock Duo's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. ClockMate sells 4 one-off in-app purchases and Chess Clock Duo sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ClockMate ships an update every 4 months, Chess Clock Duo every 3 months. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | ClockMate | Chess Clock Duo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Size | 22 MB | 11 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MUSTAFA NURI PEKDEMIR](https://appshunter.io/developer/1892631183) | [Vincent Grellert](https://appshunter.io/developer/1886984960) |

## What reviewers say

### ClockMate

[App page](https://appshunter.io/ios/app/clockmate-chess-clock/id6784986840)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pawn Tip | $0.99 | one-time |
| Knight / Bishop Tip | $2.99 | one-time |
| Rook Tip | $4.99 | one-time |
| Queen Tip | $8.99 | one-time |


### Chess Clock Duo

[App page](https://appshunter.io/ios/app/chess-clock-duo-blitz-timer/id6792531599)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Yearly | $8.99 | per year |
| Chess Clock Pro | $24.99 | one-time |


## Frequently asked questions

### Is ClockMate free?

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

### Is Chess Clock Duo free?

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

### Do ClockMate or Chess Clock Duo have ads?

Neither ClockMate nor Chess Clock Duo shows ads.

### Which is updated more often, ClockMate or Chess Clock Duo?

ClockMate ships an update every 4 months, and Chess Clock Duo every 3 months. Most recently, ClockMate was updated on October 31, 2026 and Chess Clock Duo on November 10, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*