Ember
Cycle & Period Tracker

Yes, absolutely. Ember stores all data locally on your device using encrypted storage. We do not operate any servers that collect or store user data. There is no account system, no analytics tracking, and no third-party SDKs. Your health data physically cannot leave your device unless you choose to export it yourself. If you enable iCloud sync (Premium), the data travels through your personal iCloud account -- we never see it.

Yes. The core experience -- period logging, flow tracking, smart predictions, 12 symptom trackers, cervical mucus logging, mood and energy logging, calendar view, cycle ring dashboard, TTC mode with fertile window predictions, reminders, widgets, and Apple Watch app -- is completely free with no time limits or usage caps. Premium unlocks advanced features like daily fertility score, BBT charting with coverline, LH test logging, intercourse tracking, 40+ symptoms, health reports, and iCloud sync.

Ember runs on iPhone (iOS 17 and later) and Apple Watch. It includes Home Screen widgets for quick glances without opening the app. With Premium's iCloud sync, your data stays in sync across all your Apple devices. We're focused on making the best possible iOS experience rather than spreading thin across platforms.

Ember's prediction engine learns from your logged data to adapt to your unique cycle. After 2-3 logged cycles, most users see very accurate predictions. The algorithm considers your cycle length variations, period duration patterns, and historical data. Predictions improve the more you log. Note that Ember is not a medical device and should not be relied upon for contraception.

Yes, with Premium you can export comprehensive health reports in PDF format (great for sharing with your doctor) or CSV format (useful for your own analysis or importing into other tools). Reports include your cycle history, symptom patterns, temperature data, and more. Since the data lives on your device, you have full control over what you share and with whom.

Since all data is stored locally on your device, deleting the app will remove your data. If you have Premium with iCloud sync enabled, your data is backed up to your personal iCloud and will restore when you reinstall. We recommend enabling iCloud sync or exporting your data before deleting the app.

Ember is available in English, German (Deutsch), Spanish (Espanol), French (Francais), Japanese, Korean, and Portuguese (Brasileiro). The app automatically uses your device's language setting. We're continually working on adding more languages.

Yes, you can cancel anytime through your Apple ID subscription settings. You'll keep Premium access until the end of your current billing period. After cancellation, you'll still have full access to all free features and your logged data. If you purchased the lifetime plan, it never expires -- it's yours forever.