Interval Test

Interval Test

Music Theory & Ear Training

6 ratings
4 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • October 14, 2021
  • February 4, 2026

Features

Interval Test video #1 for iPhone
Interval Test video #2 for iPhone
Interval Test screenshot #3 for iPhone
Interval Test screenshot #4 for iPhone
Interval Test screenshot #5 for iPhone
Interval Test screenshot #6 for iPhone
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About

Learn music theory and practice ear training with interactive quizzes and an intuitive calculator. Understand interval concepts, calculate intervals on a staff or piano, and sharpen your listening skills through personalized exercises. Designed by a university-level music educator.

Interval theory explanations
Intuitive interval calculator
Customizable interval quizzes
Personalized ear training sessions
Instant feedback and scoring
Visual representation on staff and piano
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What's New in Interval Test

5.9.0

February 4, 2026

* Wrong-answer explanations have been added to Interval Quizzes. Now, even if you get a question wrong, you can easily see why. * At Level 1, both the abbreviation and the full interval name are shown. At Level 2 and above, only the interval abbreviation (P/M/m/A/d) is shown.

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In-App Purchases

$7.99

Music Interval App Premium

One-time purchase · Lifetime access · All features

User reviews

Bogus billing/Can’t upgrade/Do NOT buy!!

Wow, this is ridiculous. I would give zero stars if I could:

I paid for the upgrade to the app, but never received the upgrade.

I called Apple and they said I have to contact the developer. Ookaaay, but the page in the App Store has no way to contact the developer.

Apple says they can’t contact the developer. Ummmm, you communicated with them when you received the app from the developer, right? You communicated with the developer when you negotiated price and terms, right? Or did the app just magically appear in the App Store?

Since Apple manages purchases and upgrades directly with the consumer, shouldn’t there be a way for them to trigger the upgrade? Is it that they are too lazy to try to truly help the customer…Or maybe too cost conscious, or incompetent?

Definitely not the business model upon which Apple was founded.

It’s too bad because the basic app is quite good, but very limited.
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Response from developer

I’m sorry for the inconvenience. Apple handles all payments, and occasionally purchases don’t sync. Please tap “Restore Purchases” or contact me at hg-music@naver.com and I’ll resolve it quickly.

아이패드

아이패드에서는 다운이 안되나요?
검색해도 안나오네요

음정 연습하기 좋아요

근데 문제 풀때 소리 안나게 할 수 있음 좋겠습니다
노래들으면서 문제 푸는데 자꾸 노래가 끊겨요 ㅠ

기능 추가해주세오

조 기능도 추가해줘서 AM 에서 일일히 파도솔 다 샵 누르는데 조 기능 꼭 추가해주세요! 그리고 악보 찍으면 인식 기능도 (어렵지만…) 해주시면 감사하겠습니다

Developer apps

FAQ

What is Interval Test?

Interval Test is an educational app designed to help users learn music theory and practice ear training. It offers sections for understanding interval concepts, calculating intervals, taking quizzes, and engaging in personalized ear training exercises.

How does Interval Test teach music theory?

Interval Test explains interval numbers, simple and compound intervals, harmonic and melodic intervals, and inverted intervals in a clear, structured manner. It also provides an interval calculator for hands-on practice.

Can I customize the quizzes in Interval Test?

Yes, you can customize interval quizzes by selecting options such as key signatures, accidentals, staff types, and clefs. This allows for tailored practice to build specific skills.

What kind of ear training does Interval Test offer?

Interval Test provides personalized ear training sessions where you can choose between relative or absolute pitch, melodic or harmonic intervals, difficulty levels, and playback speeds to sharpen your listening skills.

Is Interval Test suitable for beginners?

Yes, the app is designed to be understandable for anyone, drawing on the developer's experience teaching music students. It aims to provide a musical and practical approach to music theory.

What devices does Interval Test support?

Interval Test is available for iPhone, iPad, and iPod devices, making it accessible to a wide range of Apple users.

How often is Interval Test updated?

The latest version of Interval Test is 5.9.0, and it was last updated on February 4, 2026. This indicates a commitment to ongoing development and improvements.

Does Interval Test have ads?

No, Interval Test does not contain advertisements, allowing for an uninterrupted learning experience. It does offer in-app purchases for additional features or content.