One person plus AI built a micro-SaaS from scratch in 30 days and reached $126 MRR
A self-reported 30-day experiment used AI to find a niche gap, build a browser extension and launch with zero ad spend, ending with 14 paying subscribers at $9 a month, $42 in out-of-pocket costs and roughly 100 hours of work. The author's own lesson is that AI is a force multiplier, not a business plan, and $126 MRR after 100 hours is a reality check on hourly returns.