Learn music theory with Sonid
Martijn Ensing Education iPhoneiPadiPod touch
Learn music theory with Sonid is a free Education app for iPhone and iPad by Martijn Ensing. Rated 4.7/5 from 215 ratings. Requires iOS 17.0.
- Rating
- 4.7
- 215 ratings
- Price
- Free
- on the App Store
- Size
- 95 MB
- Age 4+
- Updated
- Oct 15
- 2026 · v6.6.0
Screenshots
About Learn music theory with Sonid
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, read sheet music, 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. A dedicated Sheet Music course teaches you to read notes, clefs, rhythm, and key signatures on the staff. Interactive Exercises: Practice intervals, chords, scales, and notation 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, keyboard, or staff to see how the notes connect. Shared Assignments: Create a custom exercise and share it with a link or QR code. Teachers, students, and friends can take the same test—and you can follow their results. BUILD YOUR THEORETICAL KNOWLEDGE Every musician needs a strong foundation. Sonid gives you the tools to: Read Sheet Music: Learn treble and bass clef, note values, rests, meters, and rhythm so you can play from written music with confidence. 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, chord construction, and sheet music. 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. Terms of use: https://sonid.app/en/terms
Ratings & reviews
4.7
215 ratings
What’s new
Version 6.6.0 · Updated October 15, 2026
- Onboard difficult question types - Better dark mode sheet music - Other minor fixes
App privacy
The developer, Martijn Ensing, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers: Device ID
- Usage Data: Product Interaction, Advertising Data
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction, Advertising Data
- Contact Info: Email Address
- Identifiers: User ID
Used for: Third-Party Advertising, Analytics, App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Identifiers: Device ID
- Diagnostics: Crash Data, Performance Data, Other Diagnostic Data
Used for: Third-Party Advertising, Analytics, App Functionality
Alternatives to Learn music theory with Sonid
Looking for apps like Learn music theory with Sonid? Here are 6 similar apps on the App Store. The highest rated is Music Theory Essentials (5.0/5), and all 6 are free to download.
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Music Theory 101: Study Course
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MusicTT: Learn Music
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Cadence: Guitar Theory
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Learn music theory with Sonid | 4.7 / 5 (215 ratings) | Free | October 15, 2026 | |
| Tomus - music theory tutor | 4.9 / 5 (52) | Free | May 19, 2025 | Compare |
| Music Theory Essentials | 5.0 / 5 (1) | Free | Nov 8, 2024 | Compare |
| Music Theory Matrix | 5.0 / 5 (1) | Free | Jul 26, 2026 | Compare |
| Music Theory 101: Study Course | 4.8 / 5 (70) | Free | Jun 11, 2025 | Compare |
| MusicTT: Learn Music | 4.5 / 5 (112) | Free | Sep 19, 2026 | Compare |
| Cadence: Guitar Theory | 4.9 / 5 (33) | Free | Sep 23, 2026 | Compare |