# ClockMate vs OTB Clock

The clearest difference is update cadence: OTB Clock at every 2 weeks against ClockMate's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ClockMate sells 1 one-off in-app purchase and OTB Clock sells 1 in-app purchase, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.

ClockMate ships an update every 2 months, OTB Clock every 2 weeks. The most recent releases landed on September 6, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | ClockMate | OTB Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 8 MB | 1 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tobias Huppertz](https://appshunter.io/developer/1548106214) | [杰 向](https://appshunter.io/developer/1860305678) |

## What reviewers say

### ClockMate

[App page](https://appshunter.io/ios/app/clockmate-chess-clock/id6761675613)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ClockMate Pro | $0.99 | one-time |


### OTB Clock

[App page](https://appshunter.io/ios/app/otb-clock/id6762344990)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium — Yearly | $19.99 | per year |


## Frequently asked questions

### Is ClockMate free?

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

### Is OTB Clock free?

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

### Do ClockMate or OTB Clock have ads?

Neither ClockMate nor OTB Clock shows ads.

### Which is updated more often, ClockMate or OTB Clock?

ClockMate ships an update every 2 months, and OTB Clock every 2 weeks. Most recently, ClockMate was updated on September 6, 2026 and OTB Clock on September 19, 2026.

---

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