brainbump
Founder & developer · 2026
A low-friction capture tool for quotes and fleeting thoughts — a local-first web app where getting a thought down never waits on the network. Capture writes to the browser instantly and syncs to the cloud in the background, so a save can never fail on a bad connection.
- TypeScript
- React
- Vite
- IndexedDB
- Supabase
- Cloudflare Workers
The problem
A good quote from a podcast or a book, or a fleeting thought, is gone in seconds — and a general-purpose notes app adds just enough friction (open, find a note, decide where it goes) to lose it. Worse, a browser can evict local storage without warning, so a capture tool that only lives in the browser can silently lose everything.
The approach
Built a local-first web client — React + TypeScript on Vite — where capture writes to IndexedDB synchronously and never touches the network on the save path; a background queue syncs to Supabase (Postgres with row-level security and JWT auth) afterward. The server exists purely for durability: if the browser evicts local storage, signing in restores every passage. No telemetry, ever. Deployed as a static bundle on Cloudflare Workers, and developed with a disciplined agentic SDLC — versioned requirements, ADRs, external-constraints register, and adversarial design reviews.
The result
A shipped, CI-gated web client: capture, persist, sync, and full recovery after the browser store is cleared, all guarded by release-gate end-to-end tests. Capture-first, organize-later — a thought gets in with a single keystroke.
Screenshots
