Ebb records شما menstrual cycle, estimates when شما next period is likely, و reminds you beforehand. It does همه of that on گوشی شما. <b>شما data stays on شما phone</b> • بدون حساب کاربری, no server, no همگام‌سازی. Everything you log is kept in a database on دستگاه شما. • بدون اینترنت permission. Android itself stops Ebb from sending anything anywhere, و you can check that in the برنامه's permission list. • No analytics, advertising or tracking, و excluded from Android's cloud پشتیبان‌گیری. • Delete everything in تنظیمات whenever you like. <b>An estimate that's honest about what it knows</b> Ebb learns شما rhythm from شما own recent cycles و shows the next period as a range, با how sure it is. با little history it leans on a typical 28-day cycle و says so. Irregular cycles get a wider window, not false confidence. The method is plain arithmetic, explained in the برنامه. <b>Forgiving when life happens</b> • Forgot to log? Add a period on an earlier day, or fill in past ones. • A cycle thrown off by illness or a medication change can be left out of the estimate, با a یادداشت to remember why. • If periods go unlogged برای a while, the estimate carries on, says so, و History points out the gaps. <b>یادآورها بدون the cloud</b> A heads-up before شما period is expected, scheduled on the phone itself, so it arrives با no signal و in airplane mode. <b>Backups و جدید phones</b> Save شما history to a plain, documented file wherever you choose, or move it to another phone by scanning a few QR codes: one phone shows, the other looks. Nothing goes over a network. <b>More than one person</b> Helping a child who's just starting? Track them too, switch با a tap, و hand their history over to their own phone when the time comes. There's no cloud copy of شما history, so a lost phone means lost history unless you've saved a پشتیبان‌گیری file. Ebb is رایگان, متن‌باز under the MIT licence, و has بدون تبلیغات or حرفه‌ای tier.