# Thea vs Study Lock

The clearest difference is ratings volume: Thea at 2.4K against Study Lock's 1. Thea also leads on device support (4 vs 1) and iOS requirement (15.0 vs 17). Study Lock's advantage is update cadence (every 10 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 Study Lock sells 2 in-app purchases, starting at $5.99 per month. 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 Study Lock. That said, the two scores are not equally well evidenced: Thea has 2.4K ratings behind it against 1, so its average is the more settled of the two.

Thea ships an update monthly, Study Lock every 10 days. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Thea | Study Lock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (2.4K ratings)](https://appshunter.io/ios/app/thea-study-smart/id6742800289/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/study-lock-earn-screen-time/id6758857561/reviews)** |
| Number of ratings | **2.4K** | 1 |
| Positive reviews | 94.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 4 MB | 42 MB |
| Requires iOS | **15.0** | 17 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Thea Study](https://appshunter.io/developer/1800055800) | [Ethan Dietrich](https://appshunter.io/developer/1786120601) |

## 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


### Study Lock

[App page](https://appshunter.io/ios/app/study-lock-earn-screen-time/id6758857561)

This app blocks distracting applications until you complete study sessions. It uses AI to generate personalized quizzes and flashcards from your course materials, rewarding you with screen time for correct answers. Track your progress with detailed statistics and spaced repetition.

**Highlights:** AI-generated quizzes and flashcards, Import course material from PDF, photos, text, App blocking via Screen Time integration, Spaced repetition learning algorithm, Oral analysis with AI evaluation, Progress tracking and statistics, Pomodoro timer with Live Activity

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $5.99 | per month |
| Annual Pro | $34.99 | per year |


## Frequently asked questions

### Is Thea free?

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

### Is Study Lock free?

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

### Which has better reviews, Thea or Study Lock?

Study Lock is rated higher. Thea averages 4.9 out of 5 from 2.4K ratings, while Study Lock averages 5.0 from 1 ratings.

### Do Thea or Study Lock have ads?

Neither Thea nor Study Lock shows ads.

### Which is updated more often, Thea or Study Lock?

Thea ships an update monthly, and Study Lock every 10 days. Most recently, Thea was updated on October 16, 2026 and Study Lock on October 6, 2026.

---

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