# 論理学ドリル vs Introductory Statistics Tutor

The clearest difference is ads: Introductory Statistics Tutor at none against 論理学ドリル's shown. 論理学ドリル's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. 論理学ドリル sells 1 one-off in-app purchase and Introductory Statistics Tutor sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

論理学ドリル ships an update every 11 days, Introductory Statistics Tutor every 3 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | 論理学ドリル | Introductory Statistics Tutor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 11 days** | Every 3 weeks |
| Size | 13 MB | 22 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mikoto Gateway](https://appshunter.io/developer/6795057863) | [David Soulsby](https://appshunter.io/developer/1776367161) |

## What reviewers say

### 論理学ドリル

[App page](https://appshunter.io/ios/app/id6799666938)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告非表示プレミアム | $1.99 | one-time |


### Introductory Statistics Tutor

[App page](https://appshunter.io/ios/app/introductory-statistics-tutor/id6815790980)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Topics | $4.99 | one-time |


## Frequently asked questions

### Is 論理学ドリル free?

論理学ドリル is free to download, with in-app purchases available.

### Is Introductory Statistics Tutor free?

Introductory Statistics Tutor is free to download, with in-app purchases available.

### Do 論理学ドリル or Introductory Statistics Tutor have ads?

論理学ドリル shows ads; Introductory Statistics Tutor does not.

### Which is updated more often, 論理学ドリル or Introductory Statistics Tutor?

論理学ドリル ships an update every 11 days, and Introductory Statistics Tutor every 3 weeks. Most recently, 論理学ドリル was updated on October 31, 2026 and Introductory Statistics Tutor on October 31, 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.*