# Piano Scales Modes Chord Book — Music Theory Ear Trainer Keys

> Music Theory Ear Trainer Keys (iPhone/iPad app by Phuc Pham.)

- Source: https://appshunter.io/ios/app/piano-scales-modes-chord-book/id6772276256 (this page in markdown: same URL + `.md`)
- Developer: [Phuc Pham](https://appshunter.io/developer/1893081423)
- Category: Music, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: American English
- Released: 2026-05-28
- Data updated: 2026-08-24
- User reviews in markdown: https://appshunter.io/ios/app/piano-scales-modes-chord-book/id6772276256/reviews.md

## What is Piano Scales Modes Chord Book?

Look up any scale or mode, in any of the twelve keys, and actually hear it played on a keyboard you can tap.

Most theory apps hand you a static chart and leave you to imagine the sound. ScaleBook shows the scale lit up across a two-octave piano, spells every note with the correct sharps or flats, plays it back ascending or descending, and then builds the diatonic chords that go with it — so the shape, the name and the sound land at the same time.

WHAT YOU GET
- 18 scales and modes across six families — major, minor, pentatonic, blues, the seven modes and exotic scales — in all 12 keys
- A two-octave piano keyboard that highlights the scale and plays any note you tap
- One-tap playback of the whole scale, ascending or descending, with the notes lighting up in time
- Diatonic triads for every seven-note scale, with Roman numerals and tap-to-hear chords
- An interactive circle of fifths plus a full interval table, so key signatures stop being guesswork
- An ear trainer that plays a mystery scale from a random root and tracks your streak, best run and rounds played

PERFECT FOR
- Piano and keyboard players learning scales beyond major and minor
- Songwriters hunting for the right mode or colour for a progression
- Music students revising intervals, key signatures and the circle of fifths
- Anyone training their ear to tell Dorian from natural minor by sound alone

WHY NOT JUST SEARCH IT ONLINE?
A search gives you a picture of C Lydian. It does not play it, it does not transpose it to Eb, it does not tell you which chords fit, and it does not work on a stage, on a train or anywhere the signal drops. ScaleBook is fully offline — every scale, every playback tone and every lesson is generated on your device, with no account and no ads.

PRIVACY
No account, no sign-up, no tracking. Your favourites, ear-trainer stats and tuning settings live only on your iPhone.

FULL ACCESS
Full access unlocks the complete library — melodic minor, Phrygian, Lydian, Mixolydian, Locrian, whole tone, diminished, Phrygian dominant, Hirajoshi, Hungarian minor and major blues — plus diatonic chord building and the ear trainer. Choose weekly, yearly, or a one-time lifetime purchase.

Pick a root note, tap play, and hear what a mode really sounds like.

Terms of Use (EULA): https://web-levi.web.app/terms
Privacy Policy: https://web-levi.web.app/privacy-policy
Questions? tphuc.work@gmail.com

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Yearly | $14.99 | per year |



## Version history (last 3 releases)

### 1.1.1 — 2026-08-19

Bug fixes and performance improvements.

### 1.1.0 — 2026-07-18

Introducing Premium with new features. Plus bug fixes and improvements.

### 1.0 — 2026-05-28

No release notes.

## More apps by Phuc Pham

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All apps by Phuc Pham: https://appshunter.io/developer/1893081423

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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 2026-08-24.*