# Scale Master 2.0 — Hear the center. Play in tune.

> Musician's tool for practicing and improving intonation and scale recognition. (iPhone/iPad app by Gil Estes.)

- Source: https://appshunter.io/ios/app/scale-master-20/id496736994 (this page in markdown: same URL + `.md`)
- Developer: [Gil Estes](https://appshunter.io/developer/349882768)
- Category: Education, Music
- Price: $1.99 with in-app purchases
- Rating: 4.40/5 from 23 App Store ratings · 30 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 6 MB
- Languages: American English
- Released: 2012-02-20
- Data updated: 2026-09-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/scale-master-20/id496736994/reviews.md

## What is Scale Master 2.0?

Train your ears. Strengthen your intonation. Play with greater confidence.

Scale Master helps musicians develop a more reliable sense of pitch by turning intonation into something you can clearly hear, feel, and practice. Whether you sing, play a wind or string instrument, rehearse an ensemble, or teach music, Scale Master provides a steady tonal reference that makes focused listening easier.

Practice with a sustained root and justly tuned interval to hear when two notes truly resonate. As your pitch settles into place, beating is reduced and the sound becomes clearer—helping you learn the sensation of playing in tune, not merely watching a tuner.

Switch to scale practice to build dependable pitch placement across keys. Hear each scale ascend and descend while following its pattern on screen, then work at your own pace with adjustable tempo, note length, repetition, and metronome support.

Scale Master can help you:

• Recognize and correct intonation more quickly  
• Hear the resonance of well-tuned intervals  
• Develop stronger interval and scale awareness  
• Improve ensemble balance and harmonic listening  
• Practice confidently with a stable tonal center  
• Demonstrate pitch relationships clearly to students  

Choose your concert root, octave, transposing instrument, enharmonic spelling, and pitch calibration to create a practice environment that fits your music. Use Scale mode for consistent equal-tempered pitch placement, or Drone mode to explore the resonance of just intonation.

Included scales cover essential material such as major, natural minor, harmonic minor, blues, whole tone, chromatic, and pentatonic scales. An optional Jazz Modes upgrade adds Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, and Locrian modes.

Designed by a professional musician and educator, Scale Master is a practical ear-training companion for students, teachers, ensemble directors, and experienced performers who want to hear more deeply—and play more beautifully in tune.

## Key features

- Droning sound practice for intonation
- Visual scale pattern highlighting
- Supports various scale modes
- Scale auto-play function
- Real-time interval generation
- 780 droning renderings
- 420 scale configurations

## Pricing and in-app purchases

Base price: $1.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Jazz Modes | $0.99 | one-time |


## Recent user reviews (10 of 30)

All indexed reviews: https://appshunter.io/ios/app/scale-master-20/id496736994/reviews.md

### 5/5 — Great intonation workout

*2025-08-21*

I’ve been using this app for years to practice intonation using slow scales. I only wish they could go even slower than half notes at 60.

**Developer response:** New update coming and will make sore this is in there.

### 1/5 — Only 1 octave.

*2022-06-13*

As is it’s pretty useless. Plays only one octave. Good idea, but the developer evidently has pretty much abandoned the app anyway.

### 5/5 — Excellent

*2021-10-31*

I’m very happy with this program because it does what I need it to do: figure out what key a song is in!

### 4/5 — Volume

*2021-01-30*

I do wish the drone was a bit louder.

### 3/5 — Practice tool

*2020-03-05*

It’s a great practice tool. Scale visual gets out of sync with the corresponding notes.  it would be nice to be able to play two octaves.

### 5/5 — Love the Drones!

*2019-10-14*

I love using the drones when practicing.  This has helped my intonation so much.

### 3/5 — Decent but could be way better

*2019-01-26*

First, scales freeze at times and needs to shut down before it works again.  Should include whole notes and wider metronome range. Two octave scales would be great. Otherwise, helpful for intonation practice.

### 5/5 — Excellent APP For scale practice

*2017-07-24*

Really love it. Please add multi-octave scales!

### 5/5 — Perfect

*2016-02-12*

...I would appreciate background playback, but other than that, it really is perfect. It could afford to be a little more visually appealing but of course that isn't the point here. Thanks for keeping this app alive; it's an incredible resource

### 5/5 — Super Awesome

*2015-01-10, version 1.7*

I use with sax and long tones to make music practice

## Frequently asked questions about Scale Master 2.0

### What does Scale-Master do?

Scale-Master is a music practice tool designed to help musicians improve their tuning accuracy and speed. It achieves this by providing droning sounds across various intervals, allowing users to practice intonation. It also visually highlights scale patterns for easier recognition.

### What are the key features of Scale-Master?

Key features include practicing intonation through droning sounds, visual highlighting of scale patterns for 10 different scale modes (including Chromatic, Major, Minor, Pentatonic, and Blues), a scale auto-play function for real-time tuning practice, and the generation of real-time intervals based on Just Intonation.

### Is Scale-Master free to use?

The application is free to download and use, offering a range of features. However, it does include in-app purchases, suggesting that some additional content or advanced functionalities may be available for purchase.

### Who would benefit from using Scale-Master?

This app is beneficial for a wide range of musicians, from professional and amateur musicians looking to perfect their tuning, to student musicians learning about Just Intonation. Band, orchestra, and choral directors can use it to help ensembles hear what 'in tune' sounds like, and music teachers can use it to demonstrate scales, intervals, and intonation.

### What kind of scales and intervals can I practice with Scale-Master?

Scale-Master offers practice with various scale modes, including Chromatic, Major, Natural Minor, Harmonic Minor, Blues, Whole Tone, Major Pentatonic, and Minor Pentatonic. It also provides droning sounds for different intervals, with 780 droning renderings and 420 scale configurations available in the first release.

## Version history (last 5 releases)

### 2.0 — 2026-09-24

Re-written from the ground up, better drone tone quality, sleeker design and now maintainable going forward for future enhancements.

### 1.81 — 2016-09-20

This update from Apple will improve the functionality of this app. No new features are included.

Minor internal tweaks...more coming soon.

### 1.8 — 2016-01-05

Audio adjustments to account for harsh note to note transitions.

Internal: Conversion to Swift development language.

### 1.7 — 2014-06-06

Note: Starting with this release, only supporting iOS 7 and above.

1. Tuning altered so that:
- Drones use Just-Intonation
- Scales use Equal-Tempered intonation.

2. Redesigned interface for Auto-Play and Drone selections.

3. Select Drone Mode to play tuning intervals.

4. Select Scale Mode to auto-play scales. In Scale Mode:
- Swipe up to reveal the full scale mode settings screen
- Play using half, quarter or eight note values.
- Select to progress through scales by  moving up or down by major or minor 2nds
- Repeat scale 1-5 times, or infinitely.
- Change to Jazz Modes directly from the primary scale settings screen.

### 1.6 — 2013-08-27

This is a BUG FIX for issues arising with the new In-App purchase for Jazz Modes. If you had a problem, hopefully you were able to resolve it by re-installing the app. This bug fix corrects the underlying issue.

Thanks...and more is coming soon...

## Apps similar to Scale Master 2.0

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Ukulele by Ear](https://appshunter.io/ios/app/ukulele-by-ear/id1635675223) | — | $12.99 | Education |
| [Arban's](https://appshunter.io/ios/app/arbans/id6450673992) | 4.7 (9) | $4.99 | Education |
| [Rhythmic Dictation](https://appshunter.io/ios/app/rhythmic-dictation/id825293936) | 1.0 (1) | $0.99 | Education |
| [Mandolin Melodies Mastery](https://appshunter.io/ios/app/mandolin-melodies-mastery/id6504568774) | — | Free | Education |
| [Simple Sentence Maker Pro SLP](https://appshunter.io/ios/app/simple-sentence-maker-pro-slp/id1217718674) | 3.5 (2) | $79.99 | Education |
| [hEARit!](https://appshunter.io/ios/app/hearit/id6470381536) | 5.0 (1) | Free | Education |

## More apps by Gil Estes

- [Shift Calendar](https://appshunter.io/ios/app/shift-calendar/id355449249)
- [Metronome-Plus](https://appshunter.io/ios/app/metronome-plus/id369098797)
- [Shift Master Shift Calendar](https://appshunter.io/ios/app/shift-master-shift-calendar/id385155631)
- [Donithius](https://appshunter.io/ios/app/donithius/id1521159507)
- [ShiftPro](https://appshunter.io/ios/app/shiftpro/id1545225229)

All apps by Gil Estes: https://appshunter.io/developer/349882768

---

*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 2026-09-27.*