About us

seven systems designs and builds specialized software for mobile, desktop, and the web — with a strong focus on audio applications and creative tools.

Notable products include Xequence, a professional MIDI sequencer and DAW for iOS, Trinity Audio Mastering, a comprehensive mastering suite, and a range of productivity and utility apps across platforms.

The emphasis is on precision engineering and exceptional UX — every detail considered, no unnecessary dependencies, no bloat.

Whether it's a standalone app, a PWA, or a bespoke tool, the result is always software that does exactly what it should — reliably and efficiently.

Interested in working together? Get in touch →