Learn music theory with Sonid

Learn music theory with Sonid

Martijn van der Eijk

Available on Google Play
4.2(1,701)
50,000+ installsFreeEducation

Updated Jul 27, 2026 · v5.0.7

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Learn music theory in a structured and fun manner!

SONID: LEARN MUSIC THEORY & EAR TRAINING Master music theory, master your instrument. Sonid is the most comprehensive music theory app designed to take you from a total beginner to an advanced musician. Whether you want to write better songs, improvise with confidence, or train your ear, Sonid provides a clear, step-by-step path to musical mastery. Unlike other apps that overwhelm you with information, Sonid focuses on single-subject learning. This structured approach ensures you master notes, intervals, and scales before moving on to complex jazz harmony and chord substitutions. WHY CHOOSE SONID? Structured Curriculum: Follow an orderly map of music theory—from the musical alphabet to advanced modal harmony. Interactive Exercises: Practice intervals, chords, and scales with fun, bite-sized lessons designed for daily consistency. Ear Training: Develop a professional ear. Recognize chord qualities, inversions, and progressions just by listening. Real-World Application: Learn how to use theory in your playing. Understand how a Dmaj7(#11) works and where to use the Lydian mode. Musical Playground: Visualize any scale, chord, or interval on a virtual fretboard or keyboard to see how the notes connect. BUILD YOUR THEORETICAL KNOWLEDGE Every musician needs a strong foundation. Sonid gives you the tools to: Scale the Heights: Master every scale, from Major and Minor to exotic modes like Mixolydian and Phrygian. Bridge the Gaps: Learn intervals (the building blocks of music) to navigate your instrument with ease. Master Chords: Go beyond basic triads. Learn 7th chords, extensions, and jazz voicings. Understand Progressions: Learn why certain chords sound good together and how to create tension and release. FEATURES AT A GLANCE: Daily Guided Practice: Short sessions for intervals, ear training, and chord construction. Level Up: Unlock new modules, earn XP, and collect badges as you progress. In-App Wiki: Instantly look up any musical term or concept without leaving your lesson. Customizable Difficulty: Choose from Easy to Expert levels to match your current skill. In-App Forum: Get help from a community of musicians and theory experts. UNLOCK YOUR FULL POTENTIAL WITH SONID PLUS Take your musicianship to the next level with advanced features: Combined Tests: Practice multiple topics (like hard intervals and chords) in one comprehensive exam. Advanced Statistics: Identify exactly where you are making mistakes so you can practice smarter. Ad-Free Learning: Stay focused on your music with zero distractions. Stop guessing and start knowing. Whether you are a songwriter, a teacher, or a student, Sonid helps you understand how music works so you can play with more freedom and control. Download Sonid today and start building real musicianship.

Released
January 15, 2020

6 years on Google Play

Version
5.0.7
Updated
Jul 27, 2026
Content Rating
Everyone
Installs
50,000+
Developer
Martijn van der Eijk
Website
https://sonid.app
Email
martijn@kurbo.dev
In-app purchases
No

This app isn't currently appearing in any tracked top charts.

Rating breakdown

5
998
4
301
3
218
2
11
1
147