# Chess Notation Trainer Pro vs Triddle

The clearest difference is price: Triddle at Free against Chess Notation Trainer Pro's $4.99. Triddle also leads on device support (4 vs 2) and iOS requirement (15.6 vs 18.6). On update cadence, ads and in-app purchases there is nothing between them.

Triddle is free to download; Chess Notation Trainer Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Chess Notation Trainer Pro ships an update every 6 days, Triddle every 5 days. The most recent releases landed on September 23, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Chess Notation Trainer Pro | Triddle |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 5 days** |
| Size | 26 MB | 3 MB |
| Requires iOS | 18.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Nishat Majid](https://appshunter.io/developer/1727207034) | [Lars Wilhelmer](https://appshunter.io/developer/1684731896) |

## What reviewers say

### Chess Notation Trainer Pro

[App page](https://appshunter.io/ios/app/chess-notation-trainer-pro/id6478752238)

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

**In-app purchases:** none


### Triddle

[App page](https://appshunter.io/ios/app/triddle/id6680186248)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chess Notation Trainer Pro free?

Chess Notation Trainer Pro costs $4.99, with no in-app purchases.

### Is Triddle free?

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

### Do Chess Notation Trainer Pro or Triddle have ads?

Neither Chess Notation Trainer Pro nor Triddle shows ads.

### Which is updated more often, Chess Notation Trainer Pro or Triddle?

Chess Notation Trainer Pro ships an update every 6 days, and Triddle every 5 days. Most recently, Chess Notation Trainer Pro was updated on September 23, 2026 and Triddle on October 7, 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.*