First time posting in p/introduce-yourself. I'm Lisa, co-founder of a cycle tracking app we built in Amsterdam. Wanted to introduce myself and share the harder lessons from the last six months, in case anyone here is wrestling with similar problems.
PERIOD. is the EU-built cycle tracking app. An AI assistant trained on women's health — PMS, PCOS, PMDD, contraception, cycle nutrition. No ads. No data resale. Free forever for the basics. Plus (€3.49/mo) unlocks unlimited AI. Bootstrapped in Amsterdam. Servers in Ireland, no US subprocessors for user data. #1 period tracker in the Netherlands with 30,000 active users and ~150 organic signups a day. The privacy-first alternative to Flo and Clue.