iPhone and iPad App · Version 1.2

Capoflip: Capo and Chord Transposer

Paste any chord chart, choose a target key, and get the exact capo fret that puts the most open chords under your fingers. Tap once to see every chord shape you’ll play at that position. Fully offline. No account.

How it works

Paste a chord chart in any format — inline [C] brackets or a plain above-lyric chord row. Capoflip detects the key, lets you step to any target key, and instantly shows which capo fret gives you the most playable open shapes. Tap any chord to see its fingering diagram.

What’s new in 1.2

  • Capo Quick Reference — after picking a capo position, tap “See all shapes” for a full grid of every chord diagram you’ll play at that fret
  • Tappable chips in suggestions — chord chips in the capo suggestions list are now interactive; tap any chip to see its fingering diagram
  • Smart capo in export — the Export sheet auto-selects the best capo fret for the current key and embeds it in the ChordPro {capo} directive
Capo Quick Reference (new in 1.2)

Picked a capo position? Tap “See all shapes” on any suggestion card to open a full grid of fingering diagrams — every chord you’ll play at that fret, side by side. Open shapes are highlighted in gold. Know before you clamp.

Smart Export with Auto-Capo (new in 1.2)

The Export sheet now detects the best capo fret for the current key and pre-selects it. The ChordPro {capo} directive is written automatically, so the file opens correctly in OnSong, GigBook, and other musician apps. Override or clear the fret with one tap on the fret-picker row.

Key Context Panel

Every transposed chart shows a collapsible theory panel. See the relative key (e.g. Am for C major), the parallel key, and all seven diatonic triads for the current key. Tap any diatonic chord to open its fingering diagram immediately.

Based on Aldwell & Schachter diatonic harmony conventions (natural minor set).

Voice Range Advisor

Singers can pick their voice type — Bass, Baritone, Tenor, Alto, Mezzo-soprano, or Soprano — and get the three best target keys ranked by how naturally the tonic sits in their comfortable range, weighted by how many open guitar chords land there.

Comfortable ranges from McKinney (1994) and Miller (1986) vocal pedagogy references.

ChordPro Export

Export any transposed chart as a standards-compliant ChordPro file with {title}, {key}, and {capo} directives. Or export as plain text with inline [Chord] notation for Messages, Notes, or email. Uses the system share sheet — nothing leaves your device without your action.

Capo Suggestions

The engine evaluates every capo fret from 0 to 11 (or 9 for ukulele) and ranks each by open-chord coverage, with a small penalty for high frets that buzz on most instruments. The top three positions are shown with chord chips and an Easy / OK / Tough ease rating. Tap any chip to see its diagram.

Guitar & Ukulele

Switch between guitar (EADGBE open chord set) and ukulele (GCEA) in Settings. The capo engine, open-chord ranking, fingering diagrams, and Quick Reference grid all adapt to the chosen instrument.

Saved History

Every chart you transpose can be saved with one tap. The History tab keeps up to 50 charts with the last key you used. Favorites are pinned at the top. Swipe to delete.

Fully offline · No account · $0.99 one-time

Everything runs on your device. Capoflip has no network calls, no analytics SDK, no account signup, and no in-app purchases. Your chord charts stay on your device. One $0.99 purchase, no subscription.