Paulo Castellano

$2,900 MRR · 9 products · since 2018

Case studies

How Paulo built each product, from Paulo’s own posts and interviews. Newest first.

CHANGELOGFYA side project from 2018 that has earned US$157,000, and the day the free plan ended9 parts · 6 sources
Updated 13 Oct 2026Read →

Case studies · Paulo Castellano · MRRMaker