Maikstrings · Android · Free

Circle of Fifths Auto

Seven tools that belong together: an interactive circle of fifths, a chord builder, scale and interval views, animated waveforms, a metronome and a tuner. For everyone who wants to apply music theory directly on their instrument, not just read about it.

Circle of Fifths 30+ Chord types Tuner Metronome Scales Intervals Waveforms Guitar chords PDF export 6 Languages Offline

▶ Download free now Try it interactively

7 Tools in one App

Everything you need for music theory

Keys, chords, scales, waveforms, tuner and metronome — fully offline, no sign-up, ready to use immediately.

🎶

Circle of Fifths

All 24 keys at once — major outside, minor inside. Tap selects the key, long press opens details on key signature, relative key and diatonic chords.

🎸

Chord Builder

Over 30 chord types: triads, seventh chords, sus, add, altered and extended chords up to 13. Special mode recognizes custom voicings and suggests the name.

𝄞

Scales & Notes

Major scale on the staff with degree analysis, step pattern (whole/half) and intervals from the root. Notation and theory directly connected.

Intervals

All intervals of the selected key as a list — with semitone count, function and audio example on tap. Ear training right in the app.

〰️

Waveforms

Animated waveform visualization shows each note's vibration in real time. Overtone structures and sound character made graphically tangible — why intervals sound harmonic.

⏱

Metronome

40–240 BPM, time signatures 2/4, 3/4, 4/4 and 6/8. Visual pendulum for the eye, precise click for the ear.

🎤

Tuner

Chromatic tuner based on the YIN algorithm. Detects the played note via microphone and shows deviation in cents. Standard E–A–D–G–B–e detected automatically.

In Detail · Chords

Chords & Guitar Voicings

🎸 30+ chord types with alias display

The chord builder knows over 30 types — from simple triads to seventh chords, extended and altered chords. Common enharmonic aliases are shown directly:

C6 ∼ Cadd13
Cm7b5 ∼ Cø7
C° ∼ Cdim
C+ ∼ Caug

So you encounter both notations while learning — not just when they show up in a lead sheet.

🎸 Special Mode for Custom Voicings

For analyzing your own note combinations, use Special Mode — it also recognizes unusual voicings and suggests the matching chord name. Ideal for guitarists and pianists working with open tunings or custom fingerings.

🎸 Guitar voicings by difficulty

Each chord shows multiple voicing variants — sorted by difficulty (Easy, Intermediate, Advanced) and style (open chords or barre chords). Example: C major as an open beginner voicing and as a barre chord for advanced players.

Basic · Open Voicing

C Major

Three fingers, three open strings, clear sound — the first chord for beginners. Root C on the 3rd fret of the A string (orange).

Advanced · Barre

C Major (A-shape, 3rd fret)

Index finger as barre on the 3rd fret, remaining fingers on the 5th fret. Movable shape — one fret up gives C♯/D♭.

📤 PDF and Image Export

Every chord can be exported — as PDF or as a square image (perfect for Instagram). The export includes: chord name, aliases, formula, notes, intervals, description and voicing diagram. Ideal for your own practice sheets or for teaching.

In Detail · Circle of Fifths

Circle of Fifths, Scales & Intervals

🎶 Interactive Circle of Fifths — 24 keys

The central circle shows all 24 keys at once — major outside, minor inside. A tap selects the key, a longer press opens details. Try it — click on a key:

Selected Key

C major

Key Signaturenone

Relative MinorA minor

DominantG major

SubdominantF major

Diatonic Chords (I–VII)

Relationships become visible instead of needing to be memorized. Especially helpful for songwriting and understanding chord progressions. The app additionally shows neighboring keys in the circle as related keys.

𝄞 Scales in the Notation System

The selected major scale is displayed on the staff, supplemented by:

Degree analysis with all 7 notes
Step pattern (whole/half steps) visually marked
Interval analysis from the root
Chord tone markings (root, third, fifth highlighted in orange)

Suitable for students and advanced players who want to connect notation and theory directly.

〰️ Intervals & Waveforms

The interval view lists all intervals of the selected key with semitone count, function (unison, second, third etc.) and an audio example on tap. Ideal for ear training.

The animated waveforms show each note's wave in real time. The visualization makes audible relationships visible — why some intervals sound harmonic (simple frequency ratios) and others don't. Overtone structures and sound character become graphically tangible.

Current — Version 1.3

What's New?

Version 1.3 — Highlights

Animated waveforms for every note and interval
Interval view with semitones, function and audio example
Circle of fifths fully interactive — 24 keys, detail popup
Chord builder with 30+ types and alias display (e.g. C6 ∼ Cadd13)
"Special" mode for custom voicings
Guitar voicings sorted by difficulty
Metronome and chromatic tuner integrated
6 languages fully translated

Available Languages

🇩🇪 Deutsch 🇬🇧 English 🇪🇸 Español 🇫🇷 Français 🇯🇵 日本語 🇨🇳 中文

Try it Now

Circle of Fifths & Scales in the Browser

You can test part of the app's features right here in your browser — circle of fifths finder, scales with staff and audio, capodaster calculator and chord finder.

Try it interactively Circle of Fifths Theory

More Apps by Maikstrings

Earlier Apps

Simpler predecessor apps with basic features around the circle of fifths and capodaster.

Circle of a Fifth Pro

Ad-free Pro version of the circle of fifths. All 12 major and minor keys, key signatures and relative keys.

On Play Store →

Chord Circle

Chord diagrams and diatonic chords for all keys. Simple overview tool.

On Play Store →

Capodaster Sheet Pro

Capodaster transposition tables for guitarists. All chord shapes on all frets.

On Play Store →

Circle of Fifths +

Simple version of the circle of fifths for a quick overview.

On Play Store →

Ad Earnings Service & More

Reporting tool for Android developers. Ad revenue and statistics at a glance.

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