# Notation Master vs Chrono flip timer

The clearest difference is in-app purchases: Chrono flip timer at none against Notation Master's 2. Chrono flip timer also leads on update cadence (every 2 days vs weekly). Notation Master's advantage is iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Notation Master sells 2 one-off in-app purchases. Chrono flip timer asks for nothing beyond the download.

Notation Master ships an update weekly, Chrono flip timer every 2 days. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Notation Master | Chrono flip timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/notation-master/id6504364010/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Free | — |
| Size | 38 MB | 6 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Joseph Lee](https://appshunter.io/developer/1029524523) | [书玉 简](https://appshunter.io/developer/6776672398) |

## What reviewers say

### Notation Master

[App page](https://appshunter.io/ios/app/notation-master/id6504364010)

Effortlessly convert handwritten chess notation into digital PGN files using AI. Upload your games directly to platforms like Chess.com and Lichess.org for easy analysis and sharing.

**Highlights:** Instant chess notation scanning, AI-powered PGN conversion, Direct upload to Chess.com & Lichess.org, Save and share game records, Supports tournament and casual games

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 Credits | $0.99 | one-time |
| 25 Credits | $1.99 | one-time |


### Chrono flip timer

[App page](https://appshunter.io/ios/app/chrono-flip-timer/id6776980910)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Notation Master free?

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

### Is Chrono flip timer free?

Chrono flip timer is free to download, with no in-app purchases.

### Do Notation Master or Chrono flip timer have ads?

Neither Notation Master nor Chrono flip timer shows ads.

### Which is updated more often, Notation Master or Chrono flip timer?

Notation Master ships an update weekly, and Chrono flip timer every 2 days. Most recently, Notation Master was updated on October 2, 2026 and Chrono flip timer on October 10, 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.*