Your cycle, read honestly. Kept on your phone.
Phasa is a period and cycle tracker for iPhone. It gives you a window for your next period rather than a single confident date, gets sharper with every cycle you log, and never sends what you log anywhere.
- A range, not a guessCycles vary. Phasa looks at your recent history, sets aside the odd month out, and shows the days your period is likely to start — wider when your cycle is irregular, narrower as it settles.
- Temperature-awareLog basal body temperature and Phasa looks for the sustained rise that follows ovulation, then uses it to learn the length of your own luteal phase instead of assuming fourteen days.
- Patterns with receiptsWhen Phasa notices something — headaches clustering before your period, say — it tells you how many cycles that observation rests on, so you can decide how much weight to give it.
- Private by designNo account. No server. No analytics or ad code. Face ID lock, discreet reminders, one-tap export and one-tap permanent deletion.
- Fits your phoneTwo-way Apple Health sync, home-screen widgets, and a clinician-ready PDF you can bring to an appointment.
Logging, the calendar, predictions, Apple Health sync, export and deletion are free. Phasa Plus adds deeper pattern analysis, full charted history, PDF reports, partner sharing and custom symptoms.
Phasa is an information tool. It is not medical advice and must not be used as contraception.
Questions or feedback: dr.saad.javaid.95@gmail.com