Five retro voices — and one you program
Piano, Flute, Violin, Fantasy and Guitar, each a tiny lo-fi character of its own — plus an ADSR voice you set with an eight-digit code on the calculator keys, exactly like the original.
120BPM · PIANO
A pocket synth in your hand
5 voices + ADSR · 10 rhythms · rec · fx
Tap the keys and a tiny lo-fi synth comes to life — green LCD, slide switches and chunky buttons, all lovingly hand-drawn. Five voices, ten rhythms, recording, a calculator you can actually play — and an ADSR voice you program with an eight-digit code, just like the original.
Piano, Flute, Violin, Fantasy and Guitar, each a tiny lo-fi character of its own — plus an ADSR voice you set with an eight-digit code on the calculator keys, exactly like the original.
Jam over March, Rock, Bossa, Samba and more, with a melody/rhythm balance.
Capture what you play straight from the synth and share the audio with anyone.
Shape the sound with a tape-style delay and a lo-fi bit-crush effect.
Auto-Play, One-Key play and a built-in demo tune — the classic memory trick.
Flip to calculator mode, then play the keypad as a melody. The pocket-toy party trick, faithfully recreated.



One simple purchase unlocks everything — all voices, all rhythms, recording & sharing, the melody memory, and the effects. No subscription, yours forever.