Gemmein

Anyone can build an app in an afternoon now. Turning it into a business still takes weeks: sign-in, data that stays private, payments, credits, AI costs. Gemmein is that part, built once and built properly. You connect your app, set your rules and prices, and run everything from one back office: customers, plans, refunds, logs. Every change is recorded with who made it and what it was before. Built in the UK by a solo founder who wants launching software to feel as fast as building it.

TypeScript, Node.js, PostgreSQL, Next.js, AWS, Cloudflare, Stripe, Resend, Swift