TightTimeLog is a small, offline-friendly PWA timer that runs in your browser. Sessions and optional memos stay in IndexedDB on your device—they are not sent to our servers. You can switch the UI between English and Japanese.
Background
It is a personal hobby project—not a company product. I build it with an AI-assisted editor (Cursor) and host the static site on Cloudflare Pages. After launch, tuning Content-Security-Policy for production and wiring ads surfaced issues I rarely hit locally; working through them has been part of the learning.
The idea is to pair a timer with a short memo about what you were doing—handy for drills, meal timing, and quick routines you want to glance back at. Longer write-ups live on the links below.
Development notes
Longer posts (CSP, shipping, distribution, and similar notes) are on external sites. Links open in a new tab (you leave TightTimeLog).