# Notation Master vs Calculator

The clearest difference is iOS requirement: Notation Master at 13.0 against Calculator's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Notation Master sells 2 one-off in-app purchases and Calculator sells 1 in-app purchase, starting at $6.99 per year. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Notation Master | Calculator |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free | — |
| Size | 38 MB | 10 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Joseph Lee](https://appshunter.io/developer/1029524523) | [Rajesh Yadav](https://appshunter.io/developer/1894773198) |

## 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 |


### Calculator

[App page](https://appshunter.io/ios/app/calculator-1-2-3-number-pad/id6776615573)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support development | $6.99 | per year |


## Frequently asked questions

### Is Notation Master free?

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

### Is Calculator free?

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

### Do Notation Master or Calculator have ads?

Neither Notation Master nor Calculator shows ads.

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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.*