zzd Labs
zzd builds websites for Swiss businesses by day. These are the products it builds for itself, developed in the open — code going public, real numbers (revenue vs. break-even), mistakes included.
Products
Selfvie
Turn a batch of selfies into a face-centered movie. Entirely on your phone.
Built, not yet in stores
DualShot
Front and back camera, one video. An Open Camera fork for phones whose hardware can do more than their spec sheet admits.
Working on one device
Chatter
Practice a language by talking to an avatar. Speech stays on your device; a conversation costs nothing to serve.
In development, working title
Devlog
Hello from zzd Labs: building three apps in public, break-even and all
Why a one-person Swiss web studio is publishing its side products in the open — code, numbers, and mistakes included.
The Fairphone 5 has a hidden dual-camera mode. A 200-line probe found it.
Android said the Fairphone 5 can't run both cameras at once. A tiny diagnostic APK said otherwise — and that answer dictated DualShot's whole architecture.
Why Selfvie stopped shearing faces: similarity beats affine
Aligning faces across photos with a 3-point affine transform distorts them the moment the head turns. The fix is a transform that cannot shear by construction.