Apps
Apps I build for myself and for anyone who finds them useful. The tools hosted here run entirely in your browser: nothing you type or upload is sent anywhere. The larger products live on their own websites.


Design system builder
Design your product's visual identity, or import one from a website you like, preview it on a live website, app screen and element sheet, and export it as a DESIGN.md that AI coding agents like Claude Code follow, with CSS, Tailwind and JSON tokens.
Open the app

COLREGS encounter explorer
Drag ships on a chart and see, as you go, which COLREGS situation they are in, who gives way and who stands on, when and how close they pass, and where the rules turn ambiguous. Ship domains, encounter stages and velocity obstacles are drawn from the research literature.
Open the app

QR code generator
Make QR codes for links, Wi-Fi, contact cards, events and more. Style them with your own shapes, colours and logo, then download PNG, JPEG, WebP, SVG or PDF at any size.
Open the app
Air Inspection Automation
Windows software that plans drone inspections of power line towers from LiDAR scans, all the way to collision-free DJI missions split into battery flights.
Visit airinspectionautomation.com

Why We Viral
TikTok analytics for social media teams. Track creators and competitors, see which formats, hooks and topics beat their average, and turn that into ideas for your next posts. Free, with every feature.
Visit whyweviral.com