Riff Lab listens to you play guitar and instantly writes it down. Play a riff through your mic or audio interface and it transcribes the notes, guitar tab, and rhythm in real time, detects the key, and teaches you one thing about it. Tuning-aware, works with acoustic or electric, and saves your ideas so you can pick them up later. A capture tool for songwriters who can play but can't read music. Fully client-side, no cloud.
Dropframe turns raw app screenshots into a finished, on-brand App Store set, entirely in your browser. Drop your shots and it frames them, reads your app's own colors to auto-theme the whole set, adds headlines, and exports at real App Store sizes. The hard line: no sign up, no login, no email. Nothing you drop ever leaves your device. Built with Claude Opus 4.8 in Claude Code as a single self-contained HTML file, zero backend.