Lisa Volkers is the co-founder of PERIOD., the EU privacy-first cycle tracking app with 27,000 active users in the Netherlands. Based in Amsterdam, Lisa is building women's health technology that doesn't sell user data — a deliberate contrast to ad-funded competitors. PERIOD has been featured in BNR Nieuwsradio, Het Parool, and Het Financieele Dagblad. Lisa is available for expert commentary on women's health, cycle tracking, femtech, EU privacy regulation (GDPR), reproductive health, hormonal contraception, PCOS, PMDD, endometriosis, perimenopause, and women's body literacy. Fluent in Dutch and English.