Functional Ear Trainer is made and published by Kaizen9 Apps. AppBrain is an independent app data site and isn't affiliated with Kaizen9 Apps. The app name, icon, screenshots and description belong to Kaizen9 Apps and are shown as published on Google Play.

Summary

Functional Ear Trainer uses a key-centered ear training method based on Alain Benbassat's approach to help musicians hear and play by ear. It’s a long-running, highly rated free educational app with broad reach, not listed in top rankings.

Pros & Cons

Based on Alain Benbassat's proven ear training method
Ties musical tones to their function within a key for scalable learning
Free to use with no upfront cost
Suitable for beginners to professionals

Does not emphasize explicit chord or interval drills that some competitors offer

About Functional Ear Trainer

Functional Ear Trainer is an education app developed by Kaizen9 Apps.

Install Statistics

Functional Ear Trainer has been installed 1.4 million times. In the last 30 days, the app was installed 8.6 thousand times.

User Ratings

Functional Ear Trainer is rated 4.83 out of 5 stars. The rating is based on 22 thousand ratings.

App Information

Functional Ear Trainer is freely available from Google Play. The app size is 30.90 MB. The latest version available is 3.33.0. The last update was on October 2, 2026.

Technical Requirements

Functional Ear Trainer requires Android 4.4+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since November 2014.

Description by Kaizen9 Apps (from Google Play)

Ear training can be easy and fun! With a right approach.

More data about Functional Ear Trainer

Price	Free
Total installs	1.4 million
Recent installs	8.6 thousand
Rating	4.83 based on 22 thousand ratings
Ranking	Not ranked
Version	3.33.0
App size	30.9 MB
Number of libraries	18
Designed for Android	4.4+
Suitable for	Everyone
Ads	No ads

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Screenshots

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Screenshots by Kaizen9 Apps, from the Google Play listing

Official page on Google Play

Alternatives to Functional Ear Trainer

Google Play Rating history and histogram

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Installs over time

Functional Ear Trainer has been installed 1.4 million times. Over the past 30 days, it averaged 290 installs per day.

Changelog of Functional Ear Trainer

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Developer information for Kaizen9 Apps

Kaizen9 Apps

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Comments on Functional Ear Trainer for Android

★★★★★ Hugo Peepa Kettner · Sep 24, 2026

Don't rush it and this app will take you to the hearing you weren't aware of having. Thank you for making that happen!

★★★★☆ sujay c.s · Aug 30, 2026

Great app for ear training, It really works if you persist with it for few days and don't give up.

★★★★★ Colin Zeidenstein-Wilson · Aug 12, 2026

Great app! Simply plays you a cadence, then a note, then you identify the note. Lots of options for how the notes are identified, including piano key, Roman numeral, solfège, and some others I haven't tried. I bought the full version, so entirely add free, and I have already made special lessons to study my trouble notes. If you want to learn to identify your IVs from your Vs (or your VIs from you Vs 😬) at least try the free version! p.s. If your keyboard is stuck from C to B, turn off Fixed C.

★☆☆☆☆ Rowan Fox-Noble · Sep 3, 2026

"Become a lifetime member" if it's going to cost £15... set that as the price. Don't waste my time and be deceiving here acting like you can do a lot of stuff for free. You get one lesson free... then pay up

★☆☆☆☆ Steven Kofi Reed · Aug 8, 2026

For the money you have to pay there are not many games. Would like to see more games. I am a strong visual learner and new to the whole music theory thing.

★☆☆☆☆ Alihan Tokenov · Jul 6, 2026

Useless app, not convenient to use. Tasks are too complex for a beginner because there is no introduction at all.

Google Play Rankings for Functional Ear Trainer

This app is not ranked

Technologies used by Functional Ear Trainer

13 permissions · 18 libraries

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Trust & Safety: Permissions include network access, foreground service, wake lock, notifications, internet, and billing. No location access indicated. A dynamic receiver is used (not exported), which is a common safety practice for media playback apps. This aligns with typical Play Protect and security standards for educational Android apps.

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