# FEELA玩音樂 vs ThetaWave

The clearest difference is in-app purchases: FEELA玩音樂 at none against ThetaWave's 10. FEELA玩音樂 also leads on iOS requirement (10.0 vs 15.1). ThetaWave's advantage is device support. On price there is nothing between them.

Both are free to download. ThetaWave sells 10 in-app purchases, starting at $19.90 per month. FEELA玩音樂 asks for nothing beyond the download.

## The numbers

| Metric | FEELA玩音樂 | ThetaWave |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (51 ratings)](https://appshunter.io/ios/app/thetawave-ai-study-notes/id6744060956/reviews)** |
| Number of ratings | — | **51** |
| Positive reviews | — | 55.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | — | Fortnightly |
| Monetization | — | Freemium |
| Size | 141 MB | 101 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chi Hsien Lai](https://appshunter.io/developer/1039759515) | [Thetawave](https://appshunter.io/developer/1805834893) |

## What reviewers say

### FEELA玩音樂

[App page](https://appshunter.io/ios/app/feela/id6450495240)

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is FEELA玩音樂 free?

FEELA玩音樂 is free to download, with no in-app purchases.

### Is ThetaWave free?

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

---

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