Show HN: I lost billable hours forgetting timers. I turned my calendar into a DB

timescanner.io · sergentrif · 1 day ago · view on HN · tool
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AI Summary

Adrien built Timescanner, a privacy-first time-tracking tool that parses calendar events (tagged with client names) into billable invoices, eliminating the need for separate timer apps by leveraging existing calendar data stored locally.

Tags
productivity calendar-integration time-tracking privacy-by-design saas
Entities
Timescanner Google Calendar iCal
Hi HN, I’m Adrien. I run a dev agency and work as a fractional CTO. I lost too much billable hours simply because I forgot to start or stop a timer. It’s a friction point that fails exactly when you're most focused on deep work.

I realized my calendar was already a perfect, 100% accurate log of my week. If a meeting or a task happened, it’s in my agenda. So I built Timescanner to turn those [Client] tags in my calendar into invoices.

Why I built it this way:

- Privacy by design: your calendar is the database. We don't store your events on our servers. It’s a Google Calendar / iCal parser that keeps your data where it belongs.

- Zero new habits: if you already use your calendar to manage your day, you’re already 100% done with time tracking.

- Simplicity over complexity: it's a straightforward parser. No "AI guessing", no complex backend. No additional cognitive load.

Happy to answer any questions about how to use your calendar to track your time (and be productive)!

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