# Chord Studio: Piano — Learn Chords and Accompaniment

> Learn Chords and Accompaniment (iPhone/iPad app by Koji Hasegawa.)

- Source: https://appshunter.io/ios/app/chord-studio-piano/id6819836790 (this page in markdown: same URL + `.md`)
- Developer: [Koji Hasegawa](https://appshunter.io/developer/1125823867)
- Category: Music, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 19 MB
- Languages: American English, Japanese
- Released: 2026-10-08
- Data updated: 2026-10-13

## What is Chord Studio?

Chord Studio is a practice app designed to help complete beginners who have not yet learned chords accompany freely by reading chord symbols.

By working through Beginner, Intermediate, and Advanced Courses in order, you can build your skills step by step: keyboard and chord names, inversions, scales, chord progressions, two-hand playing, quarter-note and eighth-note patterns, broken chords, arpeggios, and accompaniment patterns. Questions you do not pass are automatically returned for review.

Features

• On-screen keyboard and external MIDI keyboard input
• Automatically progressing courses from beginner through advanced
• Nine Basic Practice areas with selectable difficulty
• A wide range of chords, including major, minor, seventh, diminished, suspended, augmented, extended, and slash chords
• Practice material in all 12 chromatic roots, including sharps and flats
• Separate display controls for chord tones, keyboard guides, note names, and piano notation
• Metronome with an animated pendulum
• Progress tracking through mastery levels
• Learning records and practice settings saved on your device

All features are available for the first seven days. After the trial, Beginner Course and 01 Chord Practice remain available. Purchase Full Access to unlock Intermediate and Advanced Courses and Basic Practice 02–09.

No user registration, ads, or third-party behavioral analytics are used. Learning records and settings are processed on your device and are not collected by the developer.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Full Access | $9.99 | one-time |


## Is Chord Studio safe?

Not enough ratings yet to assess Chord Studio.

## Is Chord Studio legit?

Chord Studio: Piano appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Chord Studio is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-08

No release notes.

## More apps by Koji Hasegawa

- [Face Page Turner Plus](https://appshunter.io/ios/app/face-page-turner-plus/id1130793367)
- [Signal Scope Studio](https://appshunter.io/ios/app/signal-scope-studio/id6801408561)

All apps by Koji Hasegawa: https://appshunter.io/developer/1125823867

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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 2026-10-13.*