# Microtonal Interval Eartrainer — Hear, Sing, See JI Intervals

> Hear, Sing, See JI Intervals (iPhone/iPad app by Peter Keay.)

- Source: https://appshunter.io/ios/app/microtonal-interval-eartrainer/id6811124765 (this page in markdown: same URL + `.md`)
- Developer: [Peter Keay](https://appshunter.io/developer/1776597056)
- Category: Music, Education
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 7 MB
- Languages: American English
- Released: 2026-09-17
- Data updated: 2026-09-18
- User reviews in markdown: https://appshunter.io/ios/app/microtonal-interval-eartrainer/id6811124765/reviews.md

## What is Microtonal Interval Eartrainer?

Enjoying new exotic songs, but have no idea what their unfamiliar harmonies are doing?

With a little training, you can recognize and reproduce crazy harmonies yourself!

TRAIN YOUR EAR, TRAIN YOUR VOICE
Interval Ear Trainer turns ratios from JI (just intonation) and EDO (equal divisions of the octave) into focused, colorful practice sessions. Choose prime limits from 5-limit (traditional Western harmony) through 7-limit, 11-limit, 13-limit, and higher. Then, identify the intervals you hear.

Targeted practice brings back troublesome intervals with nearby contrasts and familiar landmarks. 

Once you've trained your ear, train your voice with Hum mode, and let the app detect how close you are to singing intervals. Or, get started on recognizing chords, scales, and even scale progressions!

EXPLORE THE SPECTRUM
Turn off the pressure and enter a free spectrum mode, where you can practice your chosen intonation at will. A live display shows where your voice lands and highlights nearby intervals.

Turn real practice history into polished accomplishment cards and challenge your friends to see how they do.

No user account, ads, or in-app purchases. Microphone audio is never recorded or uploaded. Game Center integration is optional.

EARN DISCOUNTS
Unlock achievements to earn discounts on the upcoming Temper Microtonal Keyboard app, a full-featured microtonal learning and music production app.

Temper Interval Trainer is made for instrumentalists, singers, composers, and anyone curious. Recognize and reproduce anything you hear, from short melodies to entire songs!


## Version history (last 1 release)

### 1.2 — 2026-09-17

No release notes.

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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 2026-09-18.*