# IOSU! vs Milthm

The clearest difference is rating: Milthm at 4.9 against IOSU!'s 4.1. Milthm also leads on review sentiment (92% vs 63%). IOSU!'s advantage is iOS requirement (9.0 vs 15.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Milthm holds the better App Store score, 4.9 against 4.1. Both are backed by a comparable volume of ratings — 349 and 275 respectively. Written reviews point the same way: 63% of IOSU!'s written reviews are positive against 92% of Milthm's.

## The numbers

| Metric | IOSU! | Milthm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (349 ratings)](https://appshunter.io/ios/app/iosu/id1458578980/reviews) | **[4.9 (275 ratings)](https://appshunter.io/ios/app/milthm/id6451048899/reviews)** |
| Number of ratings | **349** | 275 |
| Positive reviews | 63.1% of reviews | **92.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Monetization | Free | Free |
| Size | 32 MB | 1.1 GB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Float32 Inc](https://appshunter.io/developer/467707684) | [志琰 陈](https://appshunter.io/developer/1696218830) |

## What reviewers say

### IOSU!

[App page](https://appshunter.io/ios/app/iosu/id1458578980)

Enjoy rhythm games by playing your own beatmap files. Supports 4-key and 5x5 key modes, with more to come. Easily upload your custom beatmaps wirelessly from your PC or Mac.

**Highlights:** Play custom beatmap files, 4 Keys mode, 5x5 Keys mode, Wireless beatmap upload, PC/Mac file transfer

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

**In-app purchases:** none

**What reviewers like**

- 🎮 Best osu!mania port available for iOS
- 📥 Easy .osz file import and drag-and-drop functionality
- 🎯 Accurate beatmap emulation and auto-mapping
- 🎨 Multiple game modes (4k, 7k, 5x5)
- ⚡ Smooth performance and responsive gameplay

**What reviewers complain about**

- 📱 Forced portrait mode limits playability
- 🔗 Broken URL/server for beatmap uploads
- 🎵 Only one default song included
- ⚙️ Lack of customization options
- 🎯 Inconsistent hit registration

**Reported bugs**

- URL server returns 'no' or 'forbidden' error when uploading beatmaps
- Cannot add beatmaps after reinstalling app
- Some beatmaps fail to load completely
- Hold note patterns render incorrectly
- Notes appear late or underneath hit zone at song start

**Requested features**

- Landscape mode support
- Custom scroll speed adjustment
- Skin customization and import
- Audio delay/offset adjustment
- Hit sounds


### Milthm

[App page](https://appshunter.io/ios/app/milthm/id6451048899)

Immerse yourself in a rhythm game with a "Dreams" and "Rain" theme. Enjoy dynamic tracks, a clean UI, and unique replay modes that adjust difficulty. Experience a blend of music, animation, and challenging gameplay.

**Highlights:** Clean UI design with rain theme, Dream replay mode with adjustable difficulty, Vivid chart design, High-quality music tracks, Wonderful Trial for automatic restart, Fade out notes for increased challenge, Downpour mode for chaotic gameplay

**In-app purchases:** none

**What reviewers like**

- 🎵 Excellent song variety and quality
- 🎨 Beautiful UI design and visual effects
- ⚡ Smooth and polished gameplay experience
- 🎯 Unique and creative charting style
- 💰 No gacha, ads, or pay-to-win mechanics

**What reviewers complain about**

- 🐛 Frequent crashes and black screen issues
- 📱 Compatibility problems with older iOS devices
- ⚙️ Occasional frame rate stuttering and lag
- 🎯 Overly strict S-rank requirements (all perfect needed)
- 🔧 Hitbox detection inconsistencies

**Reported bugs**

- App crashes on startup or black screen freeze
- Crashes when playing specific charts (e.g., mornflutter, Downpour)
- 404 cloudburst error preventing song playback
- Incompatibility with iPad Air 1 and older iOS versions
- Game freezes at splash screen

**Requested features**

- Cloud save/account synchronization
- Chinese mainland server launch
- Notch and Dynamic Island optimization settings
- Screen edge width adjustment for gameplay
- More lenient rating system (full combo instead of all perfect)


## Frequently asked questions

### Is IOSU! free?

IOSU! is free to download, with no in-app purchases.

### Is Milthm free?

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

### Which has better reviews, IOSU! or Milthm?

Milthm is rated higher. IOSU! averages 4.1 out of 5 from 349 ratings, while Milthm averages 4.9 from 275 ratings.

### Do IOSU! or Milthm have ads?

Neither IOSU! nor Milthm shows ads.

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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.*