# ThetaWave vs StudyOS

The clearest difference is ads: StudyOS at none against ThetaWave's shown. StudyOS also leads on rating (4.9 vs 4.6). ThetaWave's advantage is iOS requirement (15.1 vs 17.1). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Both are free to download. ThetaWave sells 10 in-app purchases, starting at $19.90 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.

StudyOS holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 50 and 66 respectively.

ThetaWave ships an update fortnightly, StudyOS every 9 days. The most recent releases landed on September 22, 2026 and August 12, 2026 respectively.

## The numbers

| Metric | ThetaWave | StudyOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (50 ratings)](https://appshunter.io/ios/app/thetawave-ai-study-notes/id6744060956/reviews) | **[4.9 (66 ratings)](https://appshunter.io/ios/app/studyos-study-with-ai/id6747879382/reviews)** |
| Number of ratings | 50 | **66** |
| Positive reviews | 57.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | Freemium | Freemium |
| Size | 101 MB | 118 MB |
| Requires iOS | **15.1** | 17.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thetawave](https://appshunter.io/developer/1805834893) | [DANIEL PONCELAS VARGAS](https://appshunter.io/developer/1823171837) |

## What reviewers say

### ThetaWave

[App page](https://appshunter.io/ios/app/thetawave-ai-study-notes/id6744060956)

This AI-powered study assistant transforms various learning materials into structured notes, mind maps, flashcards, and quizzes. It helps users learn faster, understand deeper, and retain information longer through intelligent summarization and Q&A.

**Highlights:** Auto-structured AI notes from various content types, AI-generated flashcards and quizzes, Deep Q&A for concept clarification, Mind map creation, Progress tracking, Spaced repetition for retention

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus | $19.90 | per month |
| ThetaWave Pro Weekly | $19.99 | per 7 days |
| ThetaWave Pro Month | $21.99 | per month |
| Pro | $24.99 | per month |
| Plus | $38.90 | per 3 months |
| ThetaWave Pro Quarterly | $47.90 | per 3 months |
| Pro | $47.90 | per 3 months |
| Pro | $94.90 | per year |
| ThetaWave Pro Year | $118.99 | per year |
| Pro | $118.99 | per year |


### 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 ThetaWave free?

ThetaWave 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, ThetaWave or StudyOS?

StudyOS is rated higher. ThetaWave averages 4.6 out of 5 from 50 ratings, while StudyOS averages 4.9 from 66 ratings.

### Do ThetaWave or StudyOS have ads?

ThetaWave shows ads; StudyOS does not.

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

ThetaWave ships an update fortnightly, and StudyOS every 9 days. Most recently, ThetaWave was updated on September 22, 2026 and StudyOS on August 12, 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.*