# World Taekwondo vs ChamberLog

The clearest difference is in-app purchases: World Taekwondo at none against ChamberLog's 2. World Taekwondo also leads on iOS requirement (12.0 vs 15.1). ChamberLog's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. ChamberLog sells 2 in-app purchases, starting at $2.99 per month. World Taekwondo asks for nothing beyond the download.

World Taekwondo ships an update every 2 months, ChamberLog every 2 weeks. The most recent releases landed on September 7, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | World Taekwondo | ChamberLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 19 MB | 46 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [World Taekwondo](https://appshunter.io/developer/1130821513) | [SmartCode AS](https://appshunter.io/developer/6777349503) |

## What reviewers say

### World Taekwondo

[App page](https://appshunter.io/ios/app/world-taekwondo/id6446970023)

**Features:** macOS Compatibility

**In-app purchases:** none


### ChamberLog

[App page](https://appshunter.io/ios/app/chamberlog/id6777538157)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChamberLog Pro | $2.99 | per month |
| ChamberLog Pro | $19.99 | per year |


## Frequently asked questions

### Is World Taekwondo free?

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

### Is ChamberLog free?

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

### Do World Taekwondo or ChamberLog have ads?

Neither World Taekwondo nor ChamberLog shows ads.

### Which is updated more often, World Taekwondo or ChamberLog?

World Taekwondo ships an update every 2 months, and ChamberLog every 2 weeks. Most recently, World Taekwondo was updated on September 7, 2026 and ChamberLog on September 19, 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.*