Learn music theory with Sonid
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    Learn music theory with Sonid

    Learn music theory with practical tools, guided app exercises, and a complete reference for chords, scales, notes, intervals, and modes.

    Product

    Use cases

    • For beginners
    • For guitarists
    • For pianists
    • Ear training
    • Theory practice

    Solutions

    • For teachers & schools

    Learn

    Theory

    • Intervals
    • Interval playlists
    • Chords
    • Scales
    • Terms
    • Notes reference

    Tools

    • Music Theory Playground
    • Metronome
    • Why and how to play with a metronome
    • Tuner

    Community

    • Blog
    • Basics
    • Ear training
    • About us

    Get the app

    App StoreGoogle Play

    About

    Created byMartijn van der Eijk
    Written byLida van der Eijk
    Vectors byFreepik

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    YoutubeMusic Theory Video SeriesA step-by-step guide to music theory fundamentals. These 60-second videos provide a clear, structured path to understanding how music works, optimized for a full-screen learning experience.YoutubeMusic Theory ShortsMaster music theory concepts in 60 seconds or less. Quick, vertical videos designed to give you essential theory knowledge in a fast-paced, mobile-friendly format.
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    @copyright Martijn van der Eijk 2026
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    4. Sonid is now fully native on iOS

    Sonid is now fully native on iOS

    Sonid is now fully native — and this is our biggest update ever. We rebuilt the entire app from the ground up in SwiftUI, replacing the old Cordova hybrid with a true native iOS experience. Every screen has been redesigned for speed, clarity, and day-to-day practice.


    Author: Lida van der Eijk
    July 14, 2026

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    Sonid is now fully native — and this is our biggest update ever.

    We rebuilt the entire app from the ground up in SwiftUI, replacing the old Cordova hybrid with a true native iOS experience. Every screen has been redesigned, rethought, and optimized for speed, clarity, and day-to-day practice.


    Learn — classes in Sonid

    Learn

    Smoother lesson flow, clearer progress, and a more polished path through classes, modules, and unlocks. Video intros, practice steps, medals, and completion feedback all feel faster and more intuitive.

    Exercise

    Practice is sharper than ever — quicker question flow, improved audio, clearer right/wrong feedback, streaks, and better mixed-topic sessions drawn from what you’ve unlocked in Learn.

    Try a session now:

    Turn this into practice — try the major seventh chord in a quick Sonid exercise.

    Exercise — practice picker in Sonid

    Wiki — theory dictionary in Sonid

    Wiki

    The theory library is easier to browse and read, with improved search, filters, and article presentation so you can look things up without breaking your flow.

    Guitar Extension

    Fretboard practice has been upgraded for notes, intervals, chords, and scales — a more responsive tool for guitarists learning theory on the neck.

    Fretty — guitar fretboard practice in Sonid


    On this page
    • Learn
    • Exercise
    • Wiki
    • Guitar Extension
    • Analyse
    • Timeline
    • Store
    • Profile
    • A better app, everywhere
    Music theory libraries
    On this page
    • Learn
    • Exercise
    • Wiki
    • Guitar Extension
    • Analyse
    • Timeline
    • Store
    • Profile
    • A better app, everywhere
    Product Update: June 2026
    Product

    Product Update: June 2026

    June 30, 2026

    June brought Capo — our new fretboard app for guitar, bass, ukulele, and mandolin — plus getcapo.sonid.app and deep links from sonid.app. Sonid moved to 4.0.16 with a refreshed exercise library and a smoother start for new users. On the web: free metronome and tuner tools alongside the Playground — and we started building native Sonid for iOS.

    Coming Soon: Capo by Sonid
    Product

    Coming Soon: Capo by Sonid

    June 16, 2026

    Capo puts Sonid’s chord and scale library on an interactive fretboard for guitar, bass, ukulele, mandolin, and more. The mobile app launches July 4, 2026 — here’s everything waiting on the neck.

    Product Update: May 2026
    Product

    Product Update: May 2026

    May 30, 2026

    Sonid 3.6.4 is live on iOS and Android with smoother Learn & Analyse, guided tours, a visible streak, and a bigger florin store (boosts, streak shields, combo starters, lesson tokens, and more). On sonid.app: practice deep links, listen & solfege examples, the Music Theory Playground—and Sonid Classroom for teachers is coming soon.

    Store-focused visual for Sonid 3.4.0 release post
    Product

    Sonid 3.4.0 Is Here: Back on iOS and Android

    April 22, 2026
    Sonid 3.4.0 is back on Android and iOS with a full UI revamp, latest Vue upgrade, new Italian/Portuguese/German locales, language-aware solfege notation, and new sonid://exercise deep links from the website.
    Product
    Music theory libraries
    Chord libraryScale libraryInterval guide

    Analyse in Sonid

    Analyse

    Analysis tools have been refreshed with a consistent new design, smoother navigation, and clearer results so you can break songs and progressions apart with confidence.

    Timeline

    Your learning timeline makes streaks, milestones, and day-to-day progress easier to follow — a clearer picture of how your practice adds up.

    Timeline in Sonid

    Store and Florins in Sonid

    Store

    The in-app store is smoother to browse, with clearer Sonid+ and subscription flows so power-ups and premium access are easier to understand.

    Profile

    Account settings have been redesigned for consistency and reliability — from preferences to cloud sync, everything feels more at home on iOS.

    Profile and account settings in Sonid

    A better app, everywhere

    Whether you’re starting out or picking up where you left off, the new Sonid feels faster from the first launch: fluid animations, refined dark mode, improved localization, smoother Sonid+ and subscriptions, and a more dependable experience from sign-in to daily lesson reminders.

    Thank you for learning music theory with Sonid. We’ve poured a lot into this rewrite — we hope you feel the difference from the first tap.

    Get the app:

    App StoreGoogle Play
    Chord library
    Scale library
    Interval guide