# アインシュタイン式論理脳ドリル vs Arithmetist

The clearest difference is price: Arithmetist at Free against アインシュタイン式論理脳ドリル's $2.99. Arithmetist also leads on update cadence (daily vs every 3 weeks). アインシュタイン式論理脳ドリル's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Arithmetist is free to download; アインシュタイン式論理脳ドリル costs $2.99 up front. Arithmetist sells 1 one-off in-app purchase. アインシュタイン式論理脳ドリル asks for nothing beyond the download.

アインシュタイン式論理脳ドリル ships an update every 3 weeks, Arithmetist daily. Both last shipped on October 24, 2026.

## The numbers

| Metric | アインシュタイン式論理脳ドリル | Arithmetist |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Positive reviews | 95.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Daily** |
| Size | 12 MB | 115 MB |
| Requires iOS | **3.1** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Enfour, Inc.](https://appshunter.io/developer/284965604) | [Code and DESIGN inc](https://appshunter.io/developer/1172903960) |

## What reviewers say

### アインシュタイン式論理脳ドリル

[App page](https://appshunter.io/ios/app/id475687587)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is アインシュタイン式論理脳ドリル free?

アインシュタイン式論理脳ドリル costs $2.99, with no in-app purchases.

### Is Arithmetist free?

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

### Do アインシュタイン式論理脳ドリル or Arithmetist have ads?

Arithmetist shows ads; アインシュタイン式論理脳ドリル does not.

### Which is updated more often, アインシュタイン式論理脳ドリル or Arithmetist?

アインシュタイン式論理脳ドリル ships an update every 3 weeks, and Arithmetist daily. Most recently, アインシュタイン式論理脳ドリル was updated on October 24, 2026 and Arithmetist on October 24, 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.*