Harmonizer vs Ultra Musician
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Harmonizer
This app helps infants develop perfect pitch by playing Shepard tones, aiding in pitch identity development. It also facilitates the study of chord relationships and displays the pitch of your singing.
- Shepard tone playback
- Pitch identity development
- Chord relationship study
- Vocal pitch display
- Infant music education
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See and hear how music fits together. Harmonizer turns musical relationships into a colorful, interactive grid. Tap a hexagon to hear a note, or tap the triangle between three notes to play a major or minor chord. Sing or play a single note on an instrument, and watch the detected pitch light up. EXPLORE NOTES AND CHORDS Discover how neighboring notes connect through perfect fifths, major thirds, and minor thirds. Major and minor chords form triangles, making harmony something you can see, hear, and explore with your fingers. SEE YOUR VOICE Use the microphone to highlight the pitch you sing or play. Listen to a note, try matching it with your voice, and explore the connection between sound and color. CHOOSE YOUR LABELS Show note names or Movable Do syllables, with your choice of tonic. Keep labels visible, show them only when notes are active, or hide them to focus on the colors and sounds. EXPLORE YOUR WAY Choose from playing, pitch detection, or a mode that listens when you stop playing. Adjust the grid size to suit your screen and how you like to interact. HEAR HARMONY DIFFERENTLY Harmonizer uses Shepard tones—layered sounds that emphasize a note’s identity without a distinct octave. Every hexagon with the same note name produces the same sound. For curious beginners, students, teachers, and musicians, Harmonizer offers a hands-on way to explore pitch, chords, and musical patterns. No music theory knowledge is needed to start: touch a note and listen. Pitch detection requires microphone access.
Ultra Musician
Learn music theory through interactive lessons on piano, guitar, and bass. Develop skills in playing, reading music, ear training, and theory. Offers custom lessons and a free trial.
- Learn piano, guitar, and bass
- Develop playing, reading, ear training, and theory skills
- Over 800 interactive lessons
- Create custom lessons
- Beginner to expert progression
- 30-day free trial
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UltraMusician is a revolutionary approach to understanding music theory. It builds your music comprehension by connecting 4 different skills: playing an instrument, reading music, ear training, and music theory. It also teaches three different instruments: piano, guitar, and bass, UltraMusician does it all. This fun, interactive and highly addictive game will turn you into the Ultimate Musician in no time. UltraMusician teaches you: 3 different instruments: • Piano • Guitar • Bass 4 different skills: • Playing an instrument • Reading Music • Ear Training • Music Theory 9 different lesson types: • Reading Music • Writing Music • Playing by Ear • Dictation • Ear Training • Score Analysis • Writing Chords and Scales • Playing Chords and Scales • Naming Chords and Scales on your Instrument You can literally start from ground zero as a total beginner, and become an expert musician in a very short period of time. You will be taught the fundamentals of music in a slow, step by step manner until you are a master. No experience required. If you are thinking of learning music, this app is the perfect place to start. You can also create any custom lesson you can possibly imagine by choosing the instrument, lesson type, notes, chords, and scales you want to learn. Do you have a particular weakness you would like to home in on? This app will let you dial in the exact skill set you would like to perfect. Subscription Details: • Provides access to over 800 interactive lessons. • Users may use all the features of the app for 30 days for free. • After the trial period, users will be billed the amount they have chosen. • Payment will be charged to your Apple ID. • Your account will auto renew 24 hours before the end of the current period. • You may manage or cancel your subscription at any time in your App Store Settings. End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy: https://www.ultramusician.com/privacy_policy * Note that a subscription is required to access all app features shown.
Screenshots
Verdict
The clearest difference is rating: Ultra Musician at 5.0 against Harmonizer's 4.1. Ultra Musician also leads on update cadence (weekly vs every 33 months) and review sentiment (75% vs 45%). Harmonizer's advantage is in-app purchases (none vs 6) and ratings volume (16 vs 5). On price and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Ultra Musician sells 6 in-app purchases, starting at $0.99 per month. Harmonizer asks for nothing beyond the download.
Ultra Musician holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 16 and 5 respectively. Written reviews point the same way: 45% of Harmonizer's written reviews are positive against 75% of Ultra Musician's.
Harmonizer ships an update every 33 months, Ultra Musician weekly. Both last shipped on November 1, 2026.
| Parameter | Harmonizer | Ultra Musician |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (16 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 45.5% of reviews | 75.0% of reviews — better |
| Number of ratings | 16 — better | 5 |
| Update frequency | Every 33 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Matthew McLaughlin | David Mann Music LLC |
Customer experience
Harmonizer
Ultra Musician
In-app purchases
Harmonizer
No in-app purchases
Ultra Musician
- Monthly$0.991 Month
- Half Off Monthly Subscription$4.991 Month
- Monthly Subscription1 Month trial$9.991 Month
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- Annual$9.991 Year
- Half off annual subscription$49.991 Year
- Annual Subscription1 Month trial$99.991 Year









