# Thea vs MasteryAI

The clearest difference is ratings volume: Thea at 2.5K against MasteryAI's 3. MasteryAI's advantage is update cadence (every 2 weeks vs monthly). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Thea sells 2 in-app purchases, starting at $12.00 per month and MasteryAI sells 3 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.9 for Thea against 5.0 for MasteryAI. That said, the two scores are not equally well evidenced: Thea has 2.5K ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 93% of Thea's written reviews are positive against 100% of MasteryAI's.

Thea ships an update monthly, MasteryAI every 2 weeks. The most recent releases landed on October 17, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Thea | MasteryAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (2.5K ratings)](https://appshunter.io/ios/app/thea-study-smart/id6742800289/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/masteryai-feynman-ai-study/id6756033151/reviews)** |
| Number of ratings | **2.5K** | 3 |
| Positive reviews | 93.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 4 MB | 58 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Thea Study](https://appshunter.io/developer/1800055800) | [Tu Tran](https://appshunter.io/developer/1858113571) |

## What reviewers say

### Thea

[App page](https://appshunter.io/ios/app/thea-study-smart/id6742800289)

Transform your course materials into interactive study tools with an AI-powered platform. Upload notes, PDFs, or videos to generate flashcards, practice tests, and summaries. Learn efficiently and master your subjects with personalized study plans.

**Highlights:** AI-powered study material transformation, Interactive flashcards and game modes, Adaptive learning question generation, Practice test simulation, Automatic summarization and guide creation, Multi-language support

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $12.00 | per month |
| Yearly | $48.00 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Helpful AI features
- 💰 Free version available
- 📚 Effective for studying and learning
- 🎓 Useful for AP and nursing exams

**What reviewers complain about**

- 🔍 Lack of spaced repetition setting
- 🔒 Potential for paywalls in the future

**Reported bugs**

- Answers not mixed up in matching game

**Requested features**

- Spaced repetition setting
- More customization options


### 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 |


## Frequently asked questions

### Is Thea free?

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

### Is MasteryAI free?

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

### Which has better reviews, Thea or MasteryAI?

MasteryAI is rated higher. Thea averages 4.9 out of 5 from 2.5K ratings, while MasteryAI averages 5.0 from 3 ratings.

### Do Thea or MasteryAI have ads?

Neither Thea nor MasteryAI shows ads.

### Which is updated more often, Thea or MasteryAI?

Thea ships an update monthly, and MasteryAI every 2 weeks. Most recently, Thea was updated on October 17, 2026 and MasteryAI on October 9, 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.*