# ThetaWave vs WorldFun

The clearest difference is price: ThetaWave at Free against WorldFun's $0.99. ThetaWave also leads on device support (3 vs 1) and iOS requirement (15.1 vs 18.5). WorldFun's advantage is in-app purchases (none vs 10) and ads (none vs shown).

ThetaWave is free to download; WorldFun costs $0.99 up front. ThetaWave sells 10 in-app purchases, starting at $19.90 per month. WorldFun asks for nothing beyond the download.

## The numbers

| Metric | ThetaWave | WorldFun |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.6 (50 ratings)](https://appshunter.io/ios/app/thetawave-ai-study-notes/id6744060956/reviews)** | — |
| Number of ratings | **50** | — |
| Positive reviews | 57.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | — |
| Monetization | Freemium | — |
| Size | 101 MB | 1 MB |
| Requires iOS | **15.1** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Thetawave](https://appshunter.io/developer/1805834893) | [Tomas Pace](https://appshunter.io/developer/1848578512) |

## 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 |


### WorldFun

[App page](https://appshunter.io/ios/app/worldfun/id6754512203)

**In-app purchases:** none


## Frequently asked questions

### Is ThetaWave free?

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

### Is WorldFun free?

WorldFun costs $0.99, with no in-app purchases.

### Do ThetaWave or WorldFun have ads?

ThetaWave shows ads; WorldFun does not.

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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.*