Paul Koch

AI Product Engineer @ The Bau Ventures

Products

Building tools for calendar productivity. Currently working on Kalender-Sync — a GDPR-compliant sync for Google & Outlook calendars. Closed Beta is live, feedback welcome!

Kalender-Sync
GDPR-compliant calendar sync for Google & Microsoft/Outlook. Share availability across providers without exposing private details. Built for freelancers, consultants, and teams in the EU. Closed Beta is live — DM me or reply to any post for an invite!
Closed-Beta 0

Other Projects

Check out my Portfolio Page for all my other projects.

Portfolio
All my other stuff!
present2k/month

Recent activity

I built a GDPR-compliant calendar sync for the EU market — Closed Beta is live

App to put my work shifts into Google Calendar

The story behind building my first app

I launched a Calendly alternative yesterday, and I got my first 10 paid users already

I made a 2-way sync Google Calendar and Notion, Plug & Play!

I built a GDPR-compliant calendar sync for the EU market — Closed Beta is live

We realized we’re spending way too much on Framer for idea validation – so we built our own alternative

🧩 Building a privacy-first calendar sync (EU hosted, Free/Busy only)

How I turned Reddit into my best marketing channel (without spending a cent)

From freelance tester to 7-figure MRR testing platform

Building an SEO product to $14k MRR in a crowded market

Acquiring a micro-SaaS and quitting his job after years of side hustling

This founder grew his site's monthly traffic to 120k before building a $30k MRR product