# MasteryAI vs 100マスランキング

The clearest difference is in-app purchases: 100マスランキング at none against MasteryAI's 3. MasteryAI's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. MasteryAI sells 3 in-app purchases, starting at $5.99 per 7 days. 100マスランキング asks for nothing beyond the download.

## The numbers

| Metric | MasteryAI | 100マスランキング |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/masteryai-feynman-ai-study/id6756033151/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 58 MB | 8 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tu Tran](https://appshunter.io/developer/1858113571) | [kazuki ohuchi](https://appshunter.io/developer/1896738377) |

## What reviewers say

### MasteryAI

[App page](https://appshunter.io/ios/app/masteryai-feynman-ai-study/id6756033151)

Transform raw content like lectures, PDFs, and audio into structured, high-retention study notes using science-backed learning techniques. Engage with AI-powered Feynman sessions, adaptive explanations, and dynamic quizzes to deepen understanding and combat information overload.

**Highlights:** AI-powered note generation, Feynman Technique sessions, Adaptive explanations, Cognitive science quizzes, Spaced repetition flashcards, Concept mindmaps, Multilingual support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MasteryAI Pro (Weekly) | $5.99 | per 7 days |
| MasteryAI Pro (Monthly) | $14.99 | per month |
| MasteryAI Pro (Annual) | $99.99 | per year |


### 100マスランキング

[App page](https://appshunter.io/ios/app/100/id6777680374)

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

**In-app purchases:** none


## Frequently asked questions

### Is MasteryAI free?

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

### Is 100マスランキング free?

100マスランキング is free to download, with no in-app purchases.

### Do MasteryAI or 100マスランキング have ads?

100マスランキング shows ads; MasteryAI does not.

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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.*