# UMI — Interval based instrument

> Interval-based musical instrument app for quick learning. (iPhone/iPad app by Timothy Randall.)

- Source: https://appshunter.io/ios/app/umi/id1617285180 (this page in markdown: same URL + `.md`)
- Developer: [Timothy Randall](https://appshunter.io/developer/1594065983)
- Category: Music, Music, Entertainment
- Price: $0.99
- Rating: 4.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 3 MB
- Languages: English
- Released: 2022-04-03
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/umi/id1617285180/reviews.md

## What is UMI?

UMI is an interval based musical instrument, in your pocket! Being interval based means you can master it quickly, as you only have to memorise a few chords and scales.

## Key features

- Interval-based musical instrument
- Quick to master
- Memorize few chords and scales
- Pocket-sized instrument

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/umi/id1617285180/reviews.md

### 4/5 — Great fun learning

*2022-10-06*

This is great for generating some useful melody, but may need more instructions to fully realize the potential. Which page's which note is the actual C?
And please could you make left side dot selection to have more touch area, because when I am using iPhone se2020, it is very hard for me to switch between pages it often hit musical notes. Thank you.

## Frequently asked questions about UMI

### What is UMI?

UMI is a musical instrument app that utilizes an interval-based system. This design allows users to learn chords and scales more rapidly than traditional instruments.

### How easy is UMI to learn?

UMI is designed for quick mastery due to its interval-based nature. You only need to memorize a limited number of chords and scales, making it accessible for beginners.

### What devices does UMI support?

UMI is available for iPhone and iPod devices. It was last updated on April 3, 2022, with version 1.0.

### What is the age rating for UMI?

UMI has an age rating of 4+, making it suitable for a wide range of users, including children and adults interested in music.

### Does UMI have ads?

No, UMI does not contain advertisements. The app is ad-free, providing an uninterrupted musical experience.

### How much does UMI cost?

UMI is a paid application, available for a one-time purchase of $0.99. There are no in-app purchases or subscriptions required.

### What makes UMI different from other music apps?

UMI's core difference lies in its interval-based approach, which simplifies the learning curve for musical chords and scales compared to apps that simulate traditional instruments.

### When was UMI last updated?

UMI was last updated on April 3, 2022, with version 1.0. This indicates it is a relatively new application.

## Version history (last 1 release)

### 1.0 — 2022-04-03

No release notes.

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| [Christian Radio+](https://appshunter.io/ios/app/christian-radio-plus/id564237289) | 4.8 (17,914) | Free | Music |
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## More apps by Timothy Randall

- [Music Theory Primer](https://appshunter.io/ios/app/music-theory-primer/id1594065981)
- [Recipe Storage](https://appshunter.io/ios/app/recipe-storage/id1596458370)
- [Rainbow!](https://appshunter.io/ios/app/rainbow/id6443429251)
- [Asteroid Belt](https://appshunter.io/ios/app/asteroid-belt/id6443776196)

All apps by Timothy Randall: https://appshunter.io/developer/1594065983

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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 2026-06-10.*