Peter Kos


My flagship macOS app for musicians to oragnize their discography. Track WIP versions, batch-rename files (soon!), and more.



A small, clean iOS budgeting app. Built the foundation, and then skipped to work on Cabinette (see above).

An app for BrickHack's 6th hackathon. Shipped to App Store. Attendees could view the event schedule and resources.


A Rust TUI to manage Dungeons & Dragons 5E character sheets.


iOS app for automatic attendance tracking with iBeacons.


Use your phone as a 3D instrument to spatially adjust parameters.

Computational analysis of partwriting for music theory students. (The Python in here is scrappy at best.)

macOS app for solving a DNA cypher.