Shark A-Track

Shark A-Track is a free period tracker built for sharing with the people you trust. Log your shark week, see which phase you're in, and get a forecast of the next one. TRACK - One-tap period start and end - Daily log for flow, symptoms, and mood - Cycle phase and forecast based on your own history - Calendar view with predicted periods and estimated fertile window SHARE, ONLY IF YOU WANT - Invite your partner with a one-time code so they can follow your cycle - Sister sharing: friends can see each other's cycles the same way - Revoke anyone's access instantly, any time PRIVATE BY DESIGN - People you invite see period dates and predictions only. Symptoms, moods, and notes are never visible to anyone but you. - No ads, no analytics, no trackers, no data sales. Ever. - Delete your account and all your data in one tap. Predictions are estimates based on your logged history. They are not medical advice and must not be used as contraception.