CycleSync

CycleSync is a privacy-focused menstrual cycle tracking extension that stores all your data locally in your browser. It allows you to log symptoms, track patterns, and receive personalised recommendations to optimise your well-being throughout your cycle. Key features include comprehensive cycle tracking, a smart calendar, personalised insights, phase-based recommendations, helpful reminders, and customisation options. It does not share data with third parties, requires no accounts, and gives you complete control over your health information. The developer, wushumaster75, has indicated that the data is not sold to third parties, used, or transferred for unrelated purposes, or used to determine creditworthiness