Sync vs PeachDay

Sync Period tracks cycles locally and supports private sharing with a partner or friend. Log periods, symptoms, moods, and notes; view your calendar and pattern summaries; set optional reminders; and import supported Flo, Clue, Drip, or generic CSV data after reviewing what Sync can recognize. Your cycle history is encrypted on your device. Private predictions adapt to your recent cycle history and confirmed corrections entirely on your device. Sync shows a likely-start window and confidence level, learns recurring pre-period patterns, and can use an enabled BBT signal or positive ovulation test without uploading those health details. Predictions become more cautious when history is sparse or variable. Partner sharing is optional and off by default. You choose which supported cycle details to share. Updates are end-to-end encrypted and require the complete private invite to open. Each encrypted relay update expires after no more than 30 days; active sharing renews that rolling expiration when a new update is published. Recent physical symptoms and flow, sex-drive and intimacy check-ins, and moods are three separate opt-ins that can each be turned off again. Intimate sharing is off by default and never indicates consent. Discharge, medications, written notes, and other sexual details remain private. Sync Period has no ads, no behavioral analytics SDKs, and no required account. You can export a private backup or permanently delete local app data at any time. Cycle predictions and pattern summaries are estimates. Sync Period does not provide diagnosis, contraception, or medical advice.

PeachDay is a cute, simple and completely private period tracker. YOUR CYCLE AT A GLANCE The home screen is one big peach dial. Open the app and instantly see where you are in your cycle - period days, fertile window, ovulation, and how many days until your next period. SMART PREDICTIONS PeachDay learns from your logged cycles and predicts your next period, fertile window and ovulation day. The more you log, the smarter it gets. EASY LOGGING Log your period with a single tap on the home screen, or edit past cycles freely in the calendar. Made a mistake? Fixing it takes seconds. CALENDAR & STATS See your periods, predictions, fertile window, ovulation days and expected PMS days on a monthly calendar. Check your average cycle length, average period length and recent cycle history at a glance - plus a cycle length chart with regularity and trend analysis. GENTLE REMINDERS Optional notifications before your period starts, on the expected start day, and when your fertile window begins - at the time of day you choose. PRIVATE BY DESIGN Your cycle data is sensitive. That's why PeachDay keeps your health records on your device only: - No account, no sign-up - No ads - Your logs are never uploaded To improve the app, we collect only anonymous usage statistics - your period logs and other health data are never included. CUTE ON PURPOSE Soft peach colors, playful stickers and a warm, friendly design make checking your cycle a little moment of joy instead of a chore. You can even pick a custom pastel theme - choose your own border and background colors. NOTE PeachDay's predictions are estimates based on the data you log. They can be inaccurate, especially with irregular cycles, and must not be used as contraception or medical advice. Please consult a healthcare professional for medical questions. Start with PeachDay today - your cycle, your device, your privacy.