# Interval Ear Trainer

> App for training musicians to recognize harmonic and melodic musical intervals. (iPhone/iPad app by Justin Guitar.)

- Source: https://appshunter.io/ios/app/interval-ear-trainer/id559753482 (this page in markdown: same URL + `.md`)
- Developer: [Justin Guitar](https://appshunter.io/developer/502491353)
- Category: Education, Music
- Price: $1.99
- Rating: 3.90/5 from 44 App Store ratings · 57 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.3 · 72 MB
- Languages: American English
- Released: 2013-04-09
- Data updated: 2026-09-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/interval-ear-trainer/id559753482/reviews.md

## What is Interval Ear Trainer?

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 justinguitar.com) 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

## Key features

- Melodic interval training
- Harmonic interval training
- Gradual difficulty progression
- Piano or guitar input
- Select specific intervals to practice

## Recent user reviews (10 of 57)

All indexed reviews: https://appshunter.io/ios/app/interval-ear-trainer/id559753482/reviews.md

### 5/5 — The best app for Justin’s ear training course, and a great standalone app (I imagine)

*2025-12-03*

Practicing ear training on this app with the simple feature that told me whether I was right or wrong when guessing a note helped me hear the notes and the intervals clearly, despite differences in volume and timbre (when intervals were played in different places on the guitar neck) that initially had me confused. I’ve only used this app to practice three intervals  at the time of this review - namely, the octave, perfect fifth, and perfect fourth. It helped me pass Justin’s ear training test by increasing my score from around 75% to 95%, and that score difference is indicative of how much my ear skills have improved.
You could record yourself playing different intervals and use those recordings to train your ears, but this app makes that process much easier and significantly more convenient; I can open it up, practice for just five minutes, and improve my skills instead of having to deal with the UI of a recording app and figuring out a system that tells me whether I’m right or wrong when guessing a note only after I guess and not before (for example, by the title of a recording indicating the interval being played). 
All of that is to say that this app makes ear training much easier and is quite cheap for what it offers, along with the fact that the money spent on it would support Justin and all the free videos he puts out online for learning guitar. If you can, I highly recommend buying it.

### 1/5 — So unintuitive

*2022-03-07*

Aweful. I gladly pay for apps, but this was just a donation that turns me away from Justin Guitar. 

Wasted time trying to figure it out, text information is bad. Video was worse!

### 5/5 — Phenomenal app.

*2021-12-21*

Interval training at will and on the go without the need for an instrument. The ability to customize your own training regimen allows you to focus on specific problem areas. The app is a bargain for the price, same as almost anything Justin offers on his website. If you are looking for a serious and easy to use ear training app this one is for you.

### 1/5 — Terrible instructions. Don’t waste you money.

*2021-04-05*

Absolutely no idea how to use this app. The instructions are absolutely useless. They send you off to one of Justin’s links on the internet with absolutely zero reference on how to use the app.

### 5/5 — Read this if you need help!

*2020-09-23*

When I initially opened the app I was confused on what to do. (I’m a slow minded individual lol) Here’s how to work the app-

Level 1:
Begin on the screen with the fretboard. Play the sound and decide if it’s a 4th or 5th interval. Choose your answer by either selecting the 4 or 5. If you picked correctly the button will turn green. If incorrect it will flash red. Eventually, once you answer enough correctly it will move you on to the next level. I highly recommend going over to Justin guitars website and learning ear training before attempting this.
 It is a frustrating and rewarding experience to learn!
🙂
I’ve only gone up to the second level but I will update if anything changes on the app.

Have a wonderful day!
-Viv

### 1/5 — Good Idea, Poorly Designed

*2020-05-21*

Some may find use in this app, but as a novice I think it’s too difficult and it only gets harder. After almost every question, it switches up the key and octave. There is no option to limit keys or octaves. This confused me. After using the app for 12 hours, I was convinced that I was tone deaf. 

Level one (easiest) starts off by playing a root note then another note and asks you to guess the second note played, which is either a perfect fourth or fifth. Those are, in my opinion, the two hardest notes to identify in the major scale because they’re the furthest notes from the roots. It should have started off with R, 2, 3, 6, 7, Octave all in one key; instead it does exactly the opposite of this. I have a few other gripes as well, but if these two problems were fixed I probably would have been satisfied with my purchase.

I downloaded another app which was free and it’s infinitely better. It starts off in C major with options for R, 2, 3, & 4. I learned more in 10 minutes with that app than I did in a week with this one. Turns out I’m not dumb, this app is. The only person who would benefit from this is someone with a great ear or a masochist. Unfortunately I do not have a great ear which is why I bought this app in the first place. It’s too bad, I really wanted to like it, but for my purposes it’s totally useless. 

If anyone is interested the other app is called Functional Ear Trainer. It’s terrific.

### 4/5 — Great way to train

*2020-02-22*

I’m really enjoying training my ear with this app. My only suggestion thus far is to add an option, perhaps only in training mode, to replay a missed interval. When I miss one I find myself wanting to hear it again so that I can train my ear properly.

### 4/5 — Almost excellent

*2019-11-22*

Great app - quite addictive. Really does train your ear.
One minor tweak needed. The root note keeps changing which is good, but please give the option of keeping to a given root. Would be good for beginners. Keep up the great work Justin!

### 4/5 — Amazing but One Important Problem!

*2019-11-04*

I really love this app..this is amazing and a necessity for my training. I can’t thank you enough. However there is one problem, on the descending 4th and 5th intervals I think it is wrong. If the starting note is on the 5th fret, 4th string...the 4th interval should be on the 3 fret, 3 string... while the 5th should be the 5th fret, 3 string. I think it is wrong on the app and opposite. Please fix this if it is broken, because it will screw up people’s hearing in the future.

### 5/5 — Handy little app

*2019-09-09, version 2.11*

Yes, this works well. Great to do five minutes here, 10 minutes there when you’ve got some downtime or you’re waiting for someone. All those minutes accumulate and before you know it, your ear will be trained. So handy. Justin is a solid guy, who does things properly. Well worth it. 
Kia Ora from New Zealand. All the best for your musical journey.

## Frequently asked questions about Interval Ear Trainer

### What is Interval Ear Training?

Interval Ear Training is a method to help musicians recognize the relationship between two notes, whether they are played at the same time (harmonic) or one after another (melodic). This app focuses on developing your ability to identify these distances by sound.

### How does the app help me learn intervals?

The app starts with easy exercises and gradually increases in difficulty as you improve. You can choose to hear intervals played on a piano or guitar and input your answers using either instrument. There's also a 'Training Mode' to focus on specific intervals you find challenging.

### Is this app free to use?

Yes, this application is completely free to use. There are no in-app purchases or advertisements, allowing for an uninterrupted learning experience.

### What devices is this app compatible with?

The provided description does not specify device compatibility. However, it is designed for mobile use, implying it would be available on common smartphone and tablet operating systems.

### Who would benefit most from using this app?

This app is ideal for musicians of all levels, from beginners to advanced players, who want to enhance their ear training skills. It's particularly useful for those looking to improve their ability to identify melodic and harmonic intervals, which is crucial for understanding music theory and improvisation.

## Version history (last 5 releases)

### 2.14 — 2020-06-29

This update includes some changes to the layout and some new options to replay notes and fix the root note.  Thanks to everyone for your feedback and ideas for the app.

### 2.11 — 2019-06-11

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.

### 2.08 — 2018-06-07

Thanks to everyone for your feedback and ideas for the app.  This update includes a new link to the 'how to use' video on JustinGuitar.com

### 2.00 — 2017-11-08

Thanks to everyone for your ideas and feedback for the app.  This update makes the app compatible with iOS 11.

### 1.2 — 2015-02-16

Updated menu and instructions

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All apps by Justin Guitar: https://appshunter.io/developer/502491353

## Related topics

[interval guitar](https://appshunter.io/ios/topics/interval-guitar) · [solfi ear trainer 3](https://appshunter.io/ios/topics/solfi-ear-trainer-3)

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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.*