FoldTune

FoldTune

Accordion for foldable phones

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Free

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Details

Released
October 21, 2026
Updated
October 22, 2026

Features

FoldTune screenshot #1 for iPhone
FoldTune screenshot #2 for iPhone
iphone
ipad
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About

Your phone folds. So does an accordion. FoldTune turns iPhone Duo into a squeezebox. Hold it like a book, pump the hinge open and closed, and the bellows breathe: press harder and faster for a louder, brighter sound, ease off for a whisper. Bass and chord buttons sit under your left hand, piano keys under your right, just like the real thing. PUMP THE HINGE • Opening and closing the fold is your bellows. Both directions sound, with a natural dip when you change direction • Bass notes plus major and minor chords on the left, in circle-of-fifths order • A vertical piano keyboard on the right, with octave shift ANY IPHONE, ANY SCREEN • On the outer screen and on every other iPhone, hold the breathe bar under your thumb. Slide up to push harder • Or rock the phone to breathe • Bigger keys on the small screen, two-hand layout on the big one TWO VOICES • Accordion: three reeds per note with that warm musette shimmer • Harmonium: darker and softer, with a drone MADE ON YOUR PHONE • Every sound is synthesised live on your device. No samples, no downloads • No account, no ads, no tracking. We collect nothing FREE FoldTune is free. No subscriptions, no purchases.
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What's New in FoldTune

1.0

October 22, 2026

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