POCKET STRUM iPhone · iOS 17+

Hold a chord. Strum the glass. Every note lands.

The beloved electronic autoharp of the early '80s — the strum-anything machine heard on records by Gorillaz, David Bowie and Brian Eno — reborn as a pocket instrument anyone can play in seconds.

Download on theApp Store $2.99 launch week · then $4.99 · pay once, own it
SonicStrings — F7 · try it

This page actually plays — sweep across the strings. 🔊 The app sounds far richer; this is the postcard.

What's inside
F7BbmC

108 chords, zero theory

Twelve keys in circle-of-fifths order across Major, Minor and 7th rows. Hold combinations — Maj+7, Min+7, all three — plus SUS4 and ADD9 keys. The plate re-tunes to whatever you hold.

OMNIHARPORGAN

A real synth, not samples

Four voices from a real-time polyphonic engine — anti-aliased oscillators, shimmering delay, hall reverb, vibrato — with velocity from finger speed and a haptic tick on every string.

104▲▼

A band in your pocket

Five rhythms — Rock, Slow rock, Waltz, Bossa nova, Hip hop — with a bass player that follows your chords, 60–180 BPM. Keeps playing in the background so you can jam over Apple Music or Spotify.

Two looks, one instrument
Pocket Strum in the Classic look: cream panel, red keys, rainbow strumplate
classic.pngDrop your Classic-skin portrait screenshot into shots/ (any size; it scales).
Classic — 1981 in your pocket
Pocket Strum in the Modern look: dark flat interface
modern.pngDrop your Modern-skin portrait screenshot into shots/.
Modern — dark & stage-friendly
Fact sheet
108chords
12strings, multitouch
4 + 5voices + rhythms
$4.99once. no ads · no subs · no tracking