# Thea vs StudyOS

The clearest difference is ratings volume: Thea at 2.4K against StudyOS's 66. Thea also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.1). StudyOS's advantage is update cadence (every 9 days vs monthly). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Thea sells 2 in-app purchases, starting at $12.00 per month and StudyOS sells 4 in-app purchases, starting at $4.99 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 4.9 for StudyOS. That said, the two scores are not equally well evidenced: Thea has 2.4K ratings behind it against 66, so its average is the more settled of the two.

Thea ships an update monthly, StudyOS every 9 days. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Thea | StudyOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (2.4K ratings)](https://appshunter.io/ios/app/thea-study-smart/id6742800289/reviews) | [4.9 (66 ratings)](https://appshunter.io/ios/app/studyos-study-with-ai/id6747879382/reviews) |
| Number of ratings | **2.4K** | 66 |
| Positive reviews | 94.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 4 MB | 118 MB |
| Requires iOS | **15.0** | 17.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Thea Study](https://appshunter.io/developer/1800055800) | [DANIEL PONCELAS VARGAS](https://appshunter.io/developer/1823171837) |

## 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


### StudyOS

[App page](https://appshunter.io/ios/app/studyos-study-with-ai/id6747879382)

Transform your study materials into interactive flashcards, summaries, and quizzes with AI. This app efficiently prepares you for exams and helps you master concepts on the go, making learning faster and more engaging.

**Highlights:** AI-generated flashcards, Automated summaries, Personalized quizzes, Material upload (notes, PDFs, images), Spaced repetition techniques, Progress tracking

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $4.99 | per 7 days |
| Premium Access | $12.99 | per month |
| Premium Access | $12.99 | per month |
| Premium Access | $69.99 | per year |


## Frequently asked questions

### Is Thea free?

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

### Is StudyOS free?

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

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

Thea and StudyOS are both rated 4.9 out of 5 on the App Store, from 2.4K and 66 ratings respectively.

### Do Thea or StudyOS have ads?

Neither Thea nor StudyOS shows ads.

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

Thea ships an update monthly, and StudyOS every 9 days. Most recently, Thea was updated on October 12, 2026 and StudyOS on October 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*