Features & Capabilities

Help to play by ear, compose a song, and study the Chord!

I know what the sound is, but I don't know what to call it a chord name! I tried to make a song, but what is a chord? It is an application that may be used in such cases.

Press the key on the piano to judge the chords. There is also a function to select a chord and check its constituent sound.

[Explanation of symbols for code judgment] ◎: Exact match. ○: There is a shortage of one sound. △: Two sounds are insufficient. ×: Three lack of sound. What? : There are insufficient 4 or more sounds, or there is extra sound

【Hold function】 You can hold down the key when you press the key. If you press the same key a second time, the key will be released. All will be canceled with the Reset button.

【SelectChord function】 If you select a chord, you can check the constituent sound with the keyboard while producing the sound. First pick the root tone, then choose Suffix such as minor or sus4.

【Inv function】 Judge the keys as Inversion chord.

【Others】 · If you transfer a MIDI file from iTunes, you can play that MIDI file with "Play" button. (You can stop with the Reset button) · It is possible to connect to a MIDI keyboard compatible with Bluetooth. · The keyboard can display up to 1 to 3 octaves. · You can choose the tone colors, piano, marimba and bass so on.

User Growth & Download Statistics

App
By:
Yasuhiro Suzuki
Rating:
4.50
(42)
0.50
Version:
1.3.6 Last updated: 2025-10-27
Version code:
879241800
Creation date:
2018-07-26
Compatible devices:
Size:
179.92MB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-10
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
Yasuhiro Suzuki
Apple Apps Store
https://apps.apple.com/jp/app/piano-chord-judge/id1396636271?l=en-US
Website:
http://ysapp.mine.nu

User Reviews

This reminds me of an app I haven’t been able to get to work again for years. I use this not only to find chords, but to add to the list and play like a launchpad, record it, and sample in songs. I’ve been able to make a couple solid tracks with this, and it helps me think more theoretically. The sounds are interesting and get me to think outside the box. The piano and DoReMi are my favorite, and have an a ethereal, interesting timbre that is unique rather than just basic stock midi sounds. Honestly, this app should be a paid app, and we’re all very lucky that it is free. Thank you!
by wa*****, 2023-09-07
View all user reviews ›

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