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Frettle

Fretboard Visualizer for Guitar, Bass, Ukulele & Mandolin

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Frettle is a free, open source app that shows every note, chord shape and scale on the neck of a guitar, bass, ukulele or mandolin. Pick a chord to see all the ways to play it up the neck, with the root and intervals marked and barres drawn in. Pick a scale to see it across the whole fretboard, split into hand-sized groups, along with the chords that fit it. Tap any note to hear it.

PH · launched Nov 7, 2026 · 1 upvote (top 65%) · 0 views

Niche: music education and practice apps · 185 launches, 16 in the last 7 days ▼ -36% · Explore this niche →

Category and tags
  • Media & entertainment
  • Prosumer
  • Not AI
  • Commercial product
  • Music
  • GitHub
  • Online Learning

Visit website ↗ Source listing ↗

More like this: all 185 launches in music education and practice apps →

Could you build this?

Yes A fretboard visualizer rendering chords and scales from music theory data is a well-defined front-end project. It is open source and has no hard infrastructure needs.

Competitors

Other products that read as similar to this one : 182 launches clear the similarity bar, closest 8 shown.

Attention rank: #83 of 183 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 367 days after the earliest competitor.

  • LarkTune · ph · 2026-10-27 · 1 upvotes · similarity 0.59
  • Fretalus · ph · 2026-09-23 · 1 upvotes · similarity 0.54
  • Fretboard IQ · ph · 2026-10-17 · 1 upvotes · similarity 0.53
  • GuitarVibe · ph · 2026-11-12 · 1 upvotes · similarity 0.53
  • Fretmait · ph · 2026-10-15 · 1 upvotes · similarity 0.52
  • EliTrainer · ph · 2026-10-04 · 3 upvotes · similarity 0.50
  • Open Chord: Learn Guitar · ph · 2026-09-18 · 1 upvotes · similarity 0.49
  • Melodic Guitar · ph · 2026-10-14 · 3 upvotes · similarity 0.49

Related data

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.