Cycle Trackers for Every Stage

Discover the Daysy family of cycle trackers: three devices built for different stages of life – all sharing the same core: clinically validated BBT technology that gives you real insight into your cycle and reproductive health.

Daysy – The All-in-One Fertility Tracker Daysy is the ultimate all-in-one fertility tracker – compact, smart and built for everyday life. Measure for 60 seconds every morning, check your light signal – done. Daysy is an FDA-registered Class I medical device, developed in Germany since 2014, with a clinically validated accuracy of 99.4%. The free DaysyDay App syncs all your data and displays your full BBT curve – no subscription, no ongoing costs, ever. Everything you need to understand your cycle, in one device.

Lady-Comp – Built-In Display, No Phone Needed Lady-Comp does everything Daysy does – and goes one step further by showing your full temperature curve directly on the device itself. No smartphone required. Perfect for anyone who prefers a complete picture without relying on an app. Lady-Comp is especially popular with women who have been tracking their basal body temperature for a while and want maximum clarity right in their hands.

Teena – For Young Women Just Starting Their Cycle Journey Teena was developed specifically for women from puberty onward. It guides young women through getting to know their own cycle for the first time – intuitive, clear and genuinely empowering. Understanding your body early on is the foundation for a lifetime of body literacy and reproductive confidence.

Which Device Is Right for Me? All three cycle trackers are built on the same principle: basal body temperature plus a self-learning algorithm equals a clear cycle signal. The difference comes down to display, design and who it's made for. If you're not sure which device fits your lifestyle, our support team is happy to help you find the right match.

All devices. No subscription. No recurring fees. No hormones. Just clarity – for a life in tune with your body.