# Infinite Math vs Chess Notation Fluency

The clearest difference is in-app purchases: Infinite Math at none against Chess Notation Fluency's 1. Infinite Math also leads on iOS requirement (17.0 vs 26.0). Chess Notation Fluency's advantage is ads (none vs shown) and update cadence (every 3 days vs weekly). On price there is nothing between them.

Both are free to download. Chess Notation Fluency sells 1 one-off in-app purchase. Infinite Math asks for nothing beyond the download.

Infinite Math ships an update weekly, Chess Notation Fluency every 3 days. The most recent releases landed on September 28, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Infinite Math | Chess Notation Fluency |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chess-notation-fluency/id6809233054/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 42 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [kenta yamamoto](https://appshunter.io/developer/1489320554) | [Mark Harris](https://appshunter.io/developer/6799526558) |

## What reviewers say

### Infinite Math

[App page](https://appshunter.io/ios/app/infinite-math-brain-puzzles/id6772833413)

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

**In-app purchases:** none


### Chess Notation Fluency

[App page](https://appshunter.io/ios/app/chess-notation-fluency/id6809233054)

Master chess notation with interactive exercises. Practice reading and writing Standard Algebraic Notation (SAN) using real game sequences. Track your progress and learn from detailed results.

**Highlights:** Read and write Standard Algebraic Notation (SAN), Practice with real game sequences, Train notation in both directions, Customizable practice modes, Detailed performance tracking, Offline practice available, No personal data collection

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Game Library | $4.99 | one-time |


## Frequently asked questions

### Is Infinite Math free?

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

### Is Chess Notation Fluency free?

Chess Notation Fluency is free to download, with in-app purchases available.

### Do Infinite Math or Chess Notation Fluency have ads?

Infinite Math shows ads; Chess Notation Fluency does not.

### Which is updated more often, Infinite Math or Chess Notation Fluency?

Infinite Math ships an update weekly, and Chess Notation Fluency every 3 days. Most recently, Infinite Math was updated on September 28, 2026 and Chess Notation Fluency 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.*