Music apps for iPhone, iPad and Mac

Instruments you can carry, with a sound of their own.

KTC Studio makes music apps that are quick to start, deep when you want them, and shaped by ear until they sound like records.

Loopstack

A pocket music studio. Stack loops, play in-key pads and build beats with a sound of its own.

The Loopstack studio for Mac: timeline, piano roll, plugins and a full mixer for your phone ideas.

A desk full of instruments: keys, synths, drum machines and a sampler, with a reel to arrange it all.

No ads and no tracking. Projects and recordings live on your device or your own iCloud Drive, and leave only when you share them.

Every instrument and effect runs on the device itself. No logins, no streaming sounds, no waiting. Plane mode is fine.

Every sound and screen is shaped by hand and tested on real devices. Write in and the person who built the app writes back.