# Prepa Herbart vs Thea

The clearest difference is in-app purchases: Prepa Herbart at none against Thea's 2. Thea's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 17.5). On price, update cadence and ads there is nothing between them.

Both are free to download. Thea sells 2 in-app purchases, starting at $12.00 per month. Prepa Herbart asks for nothing beyond the download.

Prepa Herbart ships an update every 3 weeks, Thea monthly. The most recent releases landed on October 9, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Prepa Herbart | Thea |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (2.4K ratings)](https://appshunter.io/ios/app/thea-study-smart/id6742800289/reviews)** |
| Number of ratings | — | **2.4K** |
| Positive reviews | — | 94.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 4 MB |
| Requires iOS | 17.5 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 12+ |
| Developer | [ARMANDO Perez Corona](https://appshunter.io/developer/1392827893) | [Thea Study](https://appshunter.io/developer/1800055800) |

## What reviewers say

### Prepa Herbart

[App page](https://appshunter.io/ios/app/prepa-herbart/id1633903021)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Prepa Herbart free?

Prepa Herbart is free to download, with no in-app purchases.

### Is Thea free?

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

### Do Prepa Herbart or Thea have ads?

Neither Prepa Herbart nor Thea shows ads.

### Which is updated more often, Prepa Herbart or Thea?

Prepa Herbart ships an update every 3 weeks, and Thea monthly. Most recently, Prepa Herbart was updated on October 9, 2026 and Thea on October 16, 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.*