Music Theory Practice App | Custom Exercises for Intervals, Chords & Scales | Sonid

music theory practice app

Music theory practice app: build your own exerciser

Sonid is a music theory practice app with a customizable exerciser: choose subjects (notes, intervals, chords, scales), set difficulty or hand-pick topics from the library, decide how much you train by ear, set session length, and drill interval recognition, chord identification, and scale practice with instant feedback on every answer. Open Pick an exercise to build a session, or tap Practice on any chord, scale, or interval in the Sonid library.

Join musicians who practice theory in short, structured sessions—not passive reading.

Why use a music theory exerciser?

Most theory sites stop at explanations. Sonid is built for doing: short music theory exercises that train recognition, spelling, and listening—the skills you need when you play.

The exerciser is your practice hub: one screen to choose what you drill, how hard it is, whether you answer by ear or on the piano keyboard, and how long the session lasts.

Why musicians choose Sonid for practice

Pick subjects, set difficulty, and run drills with instant feedback—on your schedule. If you use Sonid’s guided lessons, you can limit practice to topics you’ve already unlocked; otherwise, open the full difficulty range or choose custom intervals, chords, and scales from the library.

Configure every practice session

Pick subjects, difficulty, ear training, and session length—then tap Practice.

Start from the free theory library

Sonid’s chord, scale, and interval libraries are free references with diagrams and clear explanations—and every topic page includes Practice to open the app on that chord, scale, or interval.

Read the theory on the web, then run matching exercises without rebuilding the session from scratch. Or open Pick an exercise for full control.

How to practice in three steps

Install Sonid, set up a workout with presets or custom topics, then drill with instant feedback.

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Get Sonid on your phone

Download Sonid for iOS or Android using the store links above. Open the app and head to Pick an exercise when you are ready to practice.

Download Sonid and start practicing

Open Pick an exercise to build a session that matches what you are studying—or tap Practice on any library topic to jump straight in.

How do I build my own exercises in Sonid?

Open Pick an exercise, pick subjects, difficulty or your custom selection, ear training, and session length—then run timed exercises with instant feedback on the piano keyboard or tap-to-answer drills.

Can I use this for ear training?

Yes. Use Mixed or Listening only for interval recognition, chord identification, and scale practice by ear. Many musicians use this as their main ear training workout inside Sonid—not a separate tool.

How do quick presets work?

In Pick an exercise, Quick presets let you pick subjects and difficulty in one tap—beginner intervals, all chords, major scales, mixed sessions, and more. Star catalog presets to pin them under Favorites, then open Settings for ear training and session length.

I mainly want ear training—is this the right place?

Yes. Use Mixed or Listening only in Pick an exercise. If you want more detail on listening drills and hearing progressions, read our ear training guide—same app, more focus on the ear.

Can I practice one chord or interval from the website?

Yes. Open any entry in the chord, scale, or interval library and tap Practice. The app opens on that topic; widen the session in Pick an exercise if you like.

What are quick presets and custom topics?

Quick presets fill your topic lists from curated difficulty pools in one tap. Custom topics let you pick exact intervals, chords, and scales from the library—or save and reload your own setup under Saved.

How does Sonid compare to other music theory and ear training apps?

Apps like ToneGym, Perfect Ear, and EarMaster excel at drills and ear training games. Sonid combines custom music theory practice, free chord, scale, and interval libraries with Practice links, and guided lessons—so you can read, practice, and look up theory in one place.

Do I need Sonid Plus to practice?

No. Core practice and library Practice links work on the free app. Plus mainly extends session length and daily practice limits.

How long can a practice session run?

Free practice is up to five minutes per session. Sonid Plus allows up to thirty minutes for a single workout.

How do I answer questions in practice?

Most questions use an interactive piano keyboard or tap-to-answer interfaces for intervals, chords, and scales. Listening prompts use a play button. Sonid is not a sight-reading or sheet-music drill app.