# Rhythm 18 vs SFUx

The clearest difference is in-app purchases: Rhythm 18 at none against SFUx's 4. Rhythm 18 also leads on rating (5.0 vs 4.7) and update cadence (every 2 weeks vs every 6 weeks). SFUx's advantage is ratings volume (206 vs 6). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. SFUx sells 4 one-off in-app purchases. Rhythm 18 asks for nothing beyond the download.

Rhythm 18 holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: SFUx has 206 ratings behind it against 6, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Rhythm 18 ships an update every 2 weeks, SFUx every 6 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Rhythm 18 | SFUx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/rhythm-18/id1489857380/reviews)** | [4.7 (206 ratings)](https://appshunter.io/ios/app/sfux/id1506353798/reviews) |
| Number of ratings | 6 | **206** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 41 MB | 109 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kaung Wanna Kyaw](https://appshunter.io/developer/1489857379) | [SFUx Online](https://appshunter.io/developer/1506353797) |

## What reviewers say

### Rhythm 18

[App page](https://appshunter.io/ios/app/rhythm-18/id1489857380)

This educational app offers high-quality music lessons from renowned musicians. Learn music theory, notation, and creation through easily digestible full lessons for all skill levels.

**Highlights:** High-quality educational content, Lessons from renowned musicians, Music theory instruction, Notation learning, Music creation techniques, Full, digestible lessons

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

**In-app purchases:** none


### SFUx

[App page](https://appshunter.io/ios/app/sfux/id1506353798)

This platform offers a comprehensive online learning experience. Access virtual classes, engage with course materials, and take quizzes to earn digital certificates and redeemable points for gifts.

**Highlights:** Create SFUx accounts, Attend virtual classes, Engage with course materials, Complete quizzes, Earn digital certificates, Exchange points for gifts

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3500 coins | $34.99 | one-time |
| 5500 coins | $49.99 | one-time |
| 8500 coins | $69.99 | one-time |
| 12500 coins | $99.99 | one-time |


## Frequently asked questions

### Is Rhythm 18 free?

Rhythm 18 is free to download, with no in-app purchases.

### Is SFUx free?

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

### Which has better reviews, Rhythm 18 or SFUx?

Rhythm 18 is rated higher. Rhythm 18 averages 5.0 out of 5 from 6 ratings, while SFUx averages 4.7 from 206 ratings.

### Do Rhythm 18 or SFUx have ads?

Neither Rhythm 18 nor SFUx shows ads.

### Which is updated more often, Rhythm 18 or SFUx?

Rhythm 18 ships an update every 2 weeks, and SFUx every 6 weeks. Most recently, Rhythm 18 was updated on November 3, 2026 and SFUx on November 3, 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.*