Circle of Fifths

Explore keys and chord relationships on an audible circle

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Make key relationships easier to see and hear. Explore the circle of fifths, key signatures, scales and the chords around a tonal center. Compare nearby keys and discover paths for smoother modulation as you write, arrange or study music. Circle of Fifths is a focused theory tool for musicians, teachers and songwriters. Use the full app free in your browser, with optional Ad-Free access to remove cross-app recommendations. Also available on Android.

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PH · launched Oct 21, 2026 · 1 upvote (top 67%)

Education
B2C
Not AI
Hobby / open-source project

Android
Music
Education
Audio

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Could you build this?

Yes It is an interactive music theory visualization with audio playback. Web Audio and SVG or canvas rendering are well within reach of a vibe-coded build.

Competitors

Other products that read as similar to this one : 164 launches clear the similarity bar, closest 8 shown.

Attention rank: #80 of 165 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 350 days after the earliest competitor.

Interactive Chord Finder, Free Piano Scale and Chord Explorer · hn · 2026-02-16 · 9 upvotes · similarity 0.58
Piano Fingers Piano Scale & Chord Tool · ph · 2026-09-16 · 1 upvotes · similarity 0.52
Compare Scales · ph · 2026-10-22 · 3 upvotes · similarity 0.51
Music Guru · ph · 2026-10-05 · 3 upvotes · similarity 0.48
Properties Of A Chord Of A Circle I · ph · 2026-10-16 · 1 upvotes · similarity 0.47
Open—Shape · ph · 2026-09-16 · 1 upvotes · similarity 0.46
See chords as flags · hn · 2025-11-05 · 129 upvotes · similarity 0.46
LumaKeys · ph · 2026-09-23 · 7 upvotes · similarity 0.45

Other launches for this product

No other launches for this product.