# Arithmetist vs InkTrace

The clearest difference is in-app purchases: InkTrace at none against Arithmetist's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Arithmetist sells 1 one-off in-app purchase. InkTrace asks for nothing beyond the download.

Both ship on a similar rhythm, roughly daily. Both last shipped on October 12, 2026.

## The numbers

| Metric | Arithmetist | InkTrace |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Daily | Daily |
| Size | 115 MB | 125 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Code and DESIGN inc.](https://appshunter.io/developer/1172903960) | [Yuki Wakabayashi](https://appshunter.io/developer/1690120433) |

## What reviewers say

### Arithmetist

[App page](https://appshunter.io/ios/app/arithmetist/id6557037664)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $2.99 | one-time |


### InkTrace

[App page](https://appshunter.io/ios/app/inktrace/id6743766153)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Arithmetist free?

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

### Is InkTrace free?

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

### Do Arithmetist or InkTrace have ads?

Both Arithmetist and InkTrace show ads.

### Which is updated more often, Arithmetist or InkTrace?

Arithmetist ships an update daily, and InkTrace daily. Most recently, Arithmetist was updated on October 12, 2026 and InkTrace on October 12, 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.*