If you give every customer their own Supabase project, the hard part is not creating them. It is keeping them the same, knowing who owns each one, and handing one over. I tried the first two on two free projects and the third in a limited way, then built a small console page. Everything is from my run on 2026-10-27, and prices change.

How this was made: I wrote this with Claude's help: it drafted, and I ran every step, edited the text, and checked the results. The mistakes are mine. This is a personal learning project, not an official guide, and I don't work for Supabase.

The non-technical version (two owners, drift, hand-over checks): https://medium.com/p/50275a612b87

The code: https://github.com/tomozilla/customer-env-console-en-demo

What I did and did not do

I applied one SQL template to two free projects , compared a schema fingerprint , made a hand change, and applied a second version to one project.…