DotDiary is a private period and cycle tracker that stores everything in Apple Health on your iPhone — no account, no ads, no tracking, no subscription. There's no server holding your cycle data, so nothing to breach, sell, or subpoena. It's still a full tracker: single-tap logging, predictions with confidence ranges, symptom, mood and fertility tracking, trends, and a doctor-ready PDF. Free import from Flo or Clue. Free to use, with a one-time $2.99 Pro unlock, no subscription.