Pitch trainer - Harmonize was a music app developed by Toshihiko Arai. It was removed from Google Play Jan 14, 2026 and is no longer available for download.
Download Statistics
Pitch trainer - Harmonize had been downloaded 58 thousand times before it became unavailable.
User Ratings
Pitch trainer - Harmonize was rated 4.19 out of 5 stars, based on 520 ratings.
App Information
Pitch trainer - Harmonize was free to download. The APK download size was 3.30 MB. The last available version was 1.7.3. The last update was on August 18, 2023.
Technical Requirements
Pitch trainer - Harmonize required Android 4.1+ or higher. The app had a content rating of Everyone. The app had been available on Google Play January 2017.
Description
An app anyone can enjoy with which you learn to have perfect and relative pitch. Especially suited to those learning the chords of just intonation. This app is beloved by many, from those who want to be good at karaoke to brass band and orchestra members.
Hello everyone. This "Music Game" app is the sequel of my previous work. This time, the focus lies on learning double-stop notes (just intonation).
In this app, two sounds are played at the same time, but the decision is calculated on the basis of just intonation. For example, when matching major third "do" and "mi", there is a gap of 4 semi-tones, so in equal temperament there is an interval of 400 cents. However, in just intonation, "mi" has a 5/4 frequency ratio to "do", so when calculated, the interval becomes (1200 x log2 (fE / fC) =) 386.3... cents. This means that for the piano (equal temperament) interval you have to take a minor interval of approximately -14 cents. Therefore, use the piano sound only as a guide, and match the tone of the sound by feel. The trick is to operate it so you lose the beat. It will suddenly become a clear sound at a certain position. That will be the just interval tone.
※Chords reference tone is A=442 Hz.
Recent changes: + Added unison. + Supports API level 33. + Minor system fixes.
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★★★★★
This is an adorable ear trainer for students who want to learn to fine tune their ears for harmonic intervals. Take note, the pitch level is around A=445, a bit high for American musicians. But it's still a challenging and unique game.
★★★★★
Crazy good ear training. Using it for ear training for barbershop singing. Future work could be implementing justly tuned chords, and you have to adjust one note to fit the chord.
★★★★★
This app is so good at training my ear to hear pure just intonation tuning. I love it!
★★☆☆☆
Adverts after every game - with each game lasting just a few seconds. The advert pops up so fast you don't even get to see your result. There's no opportunity to check your result or improve. It's definitely no good for "learning" or "improving" unless you're already very good in the first place. To see instructions on how to play, you have to leave the game and open a website. Why?!?! It is very pretty though. And there are lots and lots of levels to play. But I uninstalled while still on Lv1
★★☆☆☆
I love the app, and it's a great tool to use with students to get them to focus in on pitch — however, the sound effects (applause, trombone noises) after each level can be distracting and disorienting. I wish I had the option to turn these off. By the same token, I wish I could pay to remove the ads as their music and sound effects are similarly distracting. The lack of a settings tab at all is a turn-off for me.
★★☆☆☆
The instructions are confusing for me. How is your sound being selected to see if it matches.
★★☆☆☆
Ios version can play the notes separately. Please implement pure and equal temperament options. Please implement for android too! Would love to pay to get rid of the ads.
Technologies used by Pitch trainer - Harmonize
Pitch trainer - Harmonize is requesting 5 permissions and is using 11 libraries.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
AdMob
Android Jetpack core