# IOSU! — Play Any Beatmap files.

> Rhythm game player for custom beatmap files. (iPhone/iPad app by Float32 Inc.)

- Source: https://appshunter.io/ios/app/iosu/id1458578980 (this page in markdown: same URL + `.md`)
- Developer: [Float32 Inc](https://appshunter.io/developer/467707684)
- Category: Games, Music, Action, Music
- Price: Free
- Rating: 4.10/5 from 349 App Store ratings · 103 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 32 MB
- Languages: Danish, Ukrainian, Armenian, Russian, Catalan, Hungarian, Norwegian Bokmål, Indonesian, Turkish, Hebrew and 23 more
- Released: 2019-04-11
- Data updated: 2026-09-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/iosu/id1458578980/reviews.md

## What is IOSU!?

Play rhythm game with your beatmap files. :)
Currently 4 Keys mode & 5x5 Keys mode are available!! 
Other modes will be available soon!!

How to upload Beatmap files!
1. Connect your iDevice and PC(Mac) to the same WI-FI network.
2. Open provided URL on your PC(Mac).
3. Upload your OSZ files.

## Key features

- Play custom beatmap files
- 4 Keys mode
- 5x5 Keys mode
- Wireless beatmap upload
- PC/Mac file transfer

## What do users think of IOSU!?

Overall sentiment: mixed

**Pros**

- 🎮 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
- 💡 Innovative concept for mobile rhythm gaming
- 🎵 Supports custom beatmaps without PC requirement after initial setup

**Cons**

- 📱 Forced portrait mode limits playability
- 🔗 Broken URL/server for beatmap uploads
- 🎵 Only one default song included
- ⚙️ Lack of customization options
- 🎯 Inconsistent hit registration
- ⏱️ Timing issues with song start delays
- 🔴 Harsh HP drain system
- 📊 No score tracking or detailed statistics
- ❌ Broken long note patterns
- 🚫 No developer communication or updates
- 🎨 Limited to white bar skin only

**Commonly 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
- Inconsistent hit registration and accuracy detection
- Song deletion via website doesn't work
- App crashes or becomes unusable after certain operations
- Notch support issues on newer phones

**Most requested features**

- Landscape mode support
- Custom scroll speed adjustment
- Skin customization and import
- Audio delay/offset adjustment
- Hit sounds
- No-fail mode
- Song rate modifiers (1.1x, 1.2x, etc.)
- Mods system (Hard Rock, etc.)
- Standard osu! mode
- More default songs
- Score system instead of letter grades
- Haptic feedback
- Bluetooth headset delay compensation
- Global ranking system
- In-app beatmap download from osu website
- Support for simfiles
- 3-key mode
- Free play without fail condition
- Song offset feature
- Windows file upload support

## Recent user reviews (10 of 103)

All indexed reviews: https://appshunter.io/ios/app/iosu/id1458578980/reviews.md

### 3/5 — skeptical

*2026-06-26, version 1.0*

would probably be great, but I don’t trust it not to steal my data or location

### 5/5 — 爱

*2026-04-18*

其实可以尝试从手机文件里上传beatmap，可以更方便，总体体验不错

### 4/5 — 如果有中文翻译就好了

*2026-02-28*

如果有中文字幕就好了

### 1/5 — It is so bad dont let this game till pu

*2026-01-03, version 1.0*

Bad

### 4/5 — 不错

*2025-12-21*

不错的游戏，就是为什么下落式音游没有长条呀？^_^¦¦¦

### 4/5 — Yeah its good but

*2025-12-11*

so it works well but really needs horizontal orientation and skins added there to make it more playable

### 4/5 — 判定离谱

*2025-11-30*

判定有点离谱了，note一多起来判定就乱了，明明点上了却还是会miss一大堆

### 1/5 — gurt: yo

*2025-10-24, version 1.0*

update your game twin ts pmo icl I want 5 key please im a femboy you need to listen

### 5/5 — 怎么导入歌曲

*2025-10-15*

怎么导入歌曲怎么导入歌曲怎么导入歌曲

### 1/5 — unusable as of april 2024

*2025-07-09*

used to be the best port of mania on ios out there but cannot add beat maps through server anymore.. if there is a way to do this locally through files would be awesome

## Frequently asked questions about IOSU!

### What is this app?

This application allows you to play rhythm games using your own custom beatmap files. It currently supports 4-key and 5x5 key modes, with plans to introduce additional modes in the future.

### How do I upload beatmap files?

To upload beatmap files, ensure your iOS device and PC (Mac or Windows) are connected to the same Wi-Fi network. Then, open the provided URL on your computer and upload your OSZ files.

### What game modes are available?

Currently, the app offers two game modes: a 4-key mode and a 5x5 key mode. The developers have indicated that more game modes will be added in future updates.

### Is this app free?

Yes, the application is available for free. There are no in-app purchases or advertisements mentioned in the provided description.

### What kind of beatmaps can I play?

You can play any beatmap files that are compatible with the app's format, typically OSZ files. This allows for a highly personalized rhythm gaming experience with your favorite songs.

## Version history (last 1 release)

### 1.0 — 2019-04-11

No release notes.

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| --- | --- | --- | --- |
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| [リズムゲーム - TUBEAT チュービート、音ゲー](https://appshunter.io/ios/app/tubeat/id1132802360) | — | Free | Games |
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| [Pitapat-Beat](https://appshunter.io/ios/app/pitapat-beat/id779286500) | 4.7 (15) | Free | Games |
| [Super DJ](https://appshunter.io/ios/app/super-dj/id1512714720) | 5.0 (3) | Free | Games |
| [Liminality - Rhythm game](https://appshunter.io/ios/app/liminality-rhythm-game/id1548279298) | 4.3 (18) | Free | Games |

## More apps by Float32 Inc

- [MELOBEAT - MP3 Rhythm Game](https://appshunter.io/ios/app/melobeat-mp3-rhythm-game/id1216571290)
- [MELOPAD - Piano,MP3 Music Game](https://appshunter.io/ios/app/melopad-pianomp3-music-game/id1269464930)
- [Classic Master](https://appshunter.io/ios/app/classic-master/id1443059108)
- [FaceDrum](https://appshunter.io/ios/app/facedrum/id1448739166)
- [아보카도 스터디](https://appshunter.io/ios/app/id6464174319)

All apps by Float32 Inc: https://appshunter.io/developer/467707684

## Related topics

[osu mania](https://appshunter.io/ios/topics/osu-mania) · [osu lazer](https://appshunter.io/ios/topics/osu-lazer) · [malody](https://appshunter.io/ios/topics/malody) · [osu](https://appshunter.io/ios/topics/osu)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*