# ChessClock vs Triangel Pro

The clearest difference is in-app purchases: ChessClock at none against Triangel Pro's 1. ChessClock also leads on iOS requirement (15.4 vs 26.0). Triangel Pro's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Triangel Pro sells 1 one-off in-app purchase. ChessClock asks for nothing beyond the download.

ChessClock ships an update every 8 months, Triangel Pro every 14 months. The most recent releases landed on October 16, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | ChessClock | Triangel Pro |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 8 months** | Every 14 months |
| Monetization | Ad-supported | — |
| Size | 5 MB | 11 MB |
| Requires iOS | **15.4** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aardustry GmbH](https://appshunter.io/developer/1674069248) | [Gerhard Lentschik](https://appshunter.io/developer/629988041) |

## What reviewers say

### ChessClock

[App page](https://appshunter.io/ios/app/chessclock/id287026942)

This app provides a digital and analog chess clock with customizable time controls, including Fischer, Bronstein, and USCF delay modes. It features a classic skeuomorphic design and highlights the active clock for easy tracking during games.

**Highlights:** Dual clock display, Fischer, Bronstein, USCF delay modes, Analog and digital modes, Independent clock settings, Active clock highlighting, Skeuomorphic design

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

**In-app purchases:** none


### Triangel Pro

[App page](https://appshunter.io/ios/app/triangel-pro/id1568735072)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertising | $1.99 | one-time |


## Frequently asked questions

### Is ChessClock free?

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

### Is Triangel Pro free?

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

### Do ChessClock or Triangel Pro have ads?

ChessClock shows ads; Triangel Pro does not.

### Which is updated more often, ChessClock or Triangel Pro?

ChessClock ships an update every 8 months, and Triangel Pro every 14 months. Most recently, ChessClock was updated on October 16, 2026 and Triangel Pro on October 13, 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.*