Sedef is a period tracker, a walk-home companion and a quiet reminder list — with no accounts, no servers and no analytics. We couldn't see your data if we wanted to. There is nothing to sell.
Track your period and see clear predictions on a calm, beautiful ring. Your data is stored only on your phone — not on our servers, because we don't have any.
Start a walk and your watch circle — up to five people you trust — keeps watch. The alarm runs on their phones: if you don't check in by your arrival time, their phones ring, even if yours is dead. One tap when you're home: "I'm home safe 🖤".
Water, vitamins, skincare — gentle daily reminders in a list that looks like a page from a good notebook.
Named after the Turkish word for mother-of-pearl — a layer of quiet protection. Here is our entire data practice, in one list: