Every musician should work on Ear Training (or Aural Training) and Interval Ear Training is a very important element of ear training. To put it very simply, you will learn to recognise the relationship between two notes (by distance), when they are played together or apart!

There are two types of interval listening, harmonic and melodic. In harmonic intervals the notes are played at the same time and in melodic the notes are played one after the other. Easy to remember: Melodic Intervals make melody, Harmonic Intervals make harmony!

Many of you will probably want to understand how the names are found and how to work out the interval note names in every key. For this info you probably want to check out my ebook Practical Music Theory (available from which will explain all the theory related to this.

This app deals specifically with Interval Ear Training, both melodic and harmonic. It will start very easy and gradually get harder as you get more correct and can pass each stage. You can choose from Piano or Guitar Input for your answers, and you can chose to hear the notes and guitar or piano. Personally, I'd recommend getting used to both. In "Training Mode" you can select specific intervals to work on if you are struggling with just specific intervals or types of interval.

I'm sure you'll find this app very helpful, all you need to add is practice time!

Best wishes, Justin

What’s New

Version 2.11

Thanks to everyone for your feedback on the app. Please keep telling us what you think and how we can improve the app. In this update we've fixed some issues with the screen layout on iPhone X devices and updated the app to use Apple's latest development tools.

Ratings and Reviews

3.9 out of 5
10 Ratings

10 Ratings

Missing a beat ,

App needs update. Does NOT WORK with iOS 11 ☹️

Great app while. It was working - except you can’t ster. Back when you make a mistake to see where you went wrong. It automatically passes straight to the next interval. Now the Ear trainer doesn’t work at all on Apple devices Apple puts up a message : “ Contact the developper to update this app to work with iOS11 (Apple’s latest syst em upgrade). So how about it, Justin?

Chris56479 ,

it's good but could use some tweaks

when using the guitar interface I thought I was identifying Generic intervals so when it went to descending notes I was tatally thrown.

until that is I used the piano interface and realised there's a bit more to it. You have to go to the Justin Guitar website or a different source to learn about major and minor intervals in order to use this app properly

plus if there was a way to keep the root on the same note it would help to get a handle on it. especially since some of us have some hearing loss at higher or lower frequencies.

Krio1987 ,

Awesome app

This really is a great app for ear training. I've been using Justin's site and methods to improve for years. This app is really useful for on the go training. The only thing I would add is the ability to restrict to a single root, I found it a little difficult at first to really understand the intervals I was hearing as there was no basis for comparison and because the root kept shifting.


Justin Guitar Ltd
62.5 MB

Requires iOS 10.3 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
Rated 4+
© JustinGuitar Ltd


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