Sync vs Emberly Private Period Tracker

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.

Emberly is a period tracker with nothing to hide, because it holds nothing of yours. Your cycle lives on your iPhone: no account, no cloud, no ads, and nobody quietly sharing your health data with an analytics company. And you shouldn't need a subscription to track your own period. Emberly is free for your first full cycle, then a single $9.99 purchase makes it yours forever. WHAT IT DOES • Predicts your period and fertile window, and gets sharper with every cycle you log • Logs a day in seconds: flow, mood, energy, symptoms, sleep, notes • Shows your patterns: cycle length, regularity, and how each phase tends to feel • Reminds you before your period starts, with discreet wording so your lock screen keeps your business to itself • Locks behind Face ID or a PIN • Works completely offline, airplane mode included WHY IT'S DIFFERENT Most period apps run on servers, and health apps are not bound by HIPAA. Emberly can't share your data because it never has it: there are no servers, no analytics, no advertising SDKs, and no third-party trackers in the app. Everything is computed on your phone. Backups are files you create yourself and save wherever you choose, like your own iCloud Drive. Privacy here isn't a policy promise. It's the architecture. PRICING, PLAINLY Your first 30 days are free and include every feature, one full cycle's worth. When the trial ends, keeping access takes a one-time $9.99 purchase. No subscription, nothing renews, and there's nothing else to buy. If you decide not to purchase, your data stays yours: backing it up remains available either way. A NOTE ON HONESTY Emberly's predictions are estimates based on the dates you log. It is not a contraceptive, not a diagnostic tool, and not a substitute for a clinician. If something about your cycle concerns you, please talk to a doctor. Questions? A human answers at support@furstenburgdigital.com. Furstenburg Digital LLC · furstenburgdigital.com