Built for private rental hosts in Germany managing one or several properties.
01
Why it matters
Bookings, occupied-night counts, deadlines and documents were scattered across platforms, spreadsheets and folders.
02
What we built
The web app combined calendar imports, stay review, tasks, documents and City Tax preparation in one place for hosts.
What the product included
01
Combined booking periods from iCal calendars.
02
Made ambiguous stays and occupied nights reviewable.
03
Organized deadlines, documents and tax preparation.
The project journey
01
Define a narrower tool for private hosts.
02
Build the application and a real sign-up funnel.
03
Test demand, record zero applications, and stop.
Closed project
Why it closed
VermietNavi is closed. The published postmortem explains the test, its costs and why development stopped. The old product site is not an active service recommendation.
Common questions
Can I sign up for VermietNavi?
No. The project was closed after the demand test and this page documents the experiment.
What happened after launch?
The report covers the product, advertising test, lack of applications and the decision to stop.
I Built VermietNavi, Got Zero Applications, and Shut It Down
An AI agent suggested a narrow SaaS product for private rental hosts. I took it all the way to production, launched Google Ads, and spent more than €76 plus infrastructure costs. This is the story of how a technically complete product failed to become a validated business—and what I will do differently next time.
