Aylin

A quiet period calendar

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

See your cycle day at a glance and mark a period with one tap. No account, no ads, no network: your records stay on your iPhone. Aylin is a quiet period calendar. Open it, see which day of your cycle it is, mark a period with one tap, close it. THE MAIN SCREEN • Your cycle day, large. The time until your next period is small and off to the side, because it is a forecast. • A month calendar showing period days and the forecast. Swipe or use the arrows to change month. • Tap a day to mark it as a period day. Tap it again to remove the mark. Nothing is ever filled in ahead of time, and days after today stay inactive. • Press and hold a day to open its sheet: flow (light, medium, heavy), spotting, symptoms, a free-text note and a sex mark. The sex mark shows as a small heart under the date and does not affect the forecast. FORECAST WITHOUT FALSE PRECISION • One date when your cycles are even, a range of dates when they vary. • With little history, Aylin says so and refines the forecast after two marked periods. • If a period is late, you see the number of days, with no extra words. • Approximate fertile days and ovulation are shown in the calendar with a caveat, and you can turn them off in Settings. • If you take hormonal contraceptives, switch on that option: the forecast from your own cycles is turned off, while marking and history keep working. • Spotting is marked separately and does not start a cycle. YOUR HISTORY • Edit any past day; cycles and the forecast are rebuilt. • Add several past periods in a row by entering the first and last day of each. • A list of past cycles with cycle and period lengths, plus your typical cycle length, typical period length and the spread. Free. • If a finished cycle is twice as long as usual or more, Aylin asks a neutral question: were there other periods in between? PRIVATE BY DESIGN • No account and no sign-up. Records are stored on your iPhone. • No ads. • Optional lock with Face ID, Touch ID or your passcode. • Export all records as a table file through the system Share sheet, and import it back. Import adds only days that have no record yet. • Optional two-way sync with Apple Health for period days and spotting, only with your permission. • Delete all data in Settings with one confirmation. REMINDER AND WIDGET • A reminder a number of days before the earliest forecast date, with your own text. • A Home Screen widget with the number of days or a date range, with no words about your cycle on it. FREE, AND ONE OPTIONAL PURCHASE Everything above is free. A single one-time purchase, with no subscription, unlocks extras: a one-to-two page report for your doctor, extra scheduled reminders, your own symptoms, charts by cycle, and five watercolor themes with matching Home Screen icons. You can preview each paid section before buying, and Restore Purchases is in Settings. There are no pop-ups asking you to buy. Aylin is available in English and Ukrainian. Aylin is a calendar for your own notes. It does not give medical advice, does not diagnose anything and is not a means of contraception. For health questions, talk to a doctor.

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The developer, Maksym Beskrovnyi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

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    Accessibility

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    Information

    Seller
    Maksym Beskrovnyi
    Size
    15.7 MB
    Category
    Health & Fitness
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and Ukrainian
    Age Rating
    9+
    In-App Purchases
    Yes
    Copyright
    © 2026 Maks Beskrovnyi
  • Developer Website
  • Privacy Policy

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