Phasa: Period Tracker Calendar

Private Cycle & Ovulation Log

Only for iPhone

Free · In‑App Purchases

iPhone

Your next period as an honest range, not a guess. Phasa learns from your own cycles and keeps every entry on your phone — no account, no server. Most period apps hand you one confident date. Bodies don't work that way. Phasa shows the days your period is likely to start, and that range tightens as it learns your rhythm — or stays wide, honestly, when your cycle is irregular. HOW PHASA READS YOUR CYCLE • Looks at your recent cycles, sets aside the odd month out, and leans on the most recent ones • Shows a prediction window plus a confidence level that says what it's based on • Log basal body temperature and Phasa looks for the sustained rise after ovulation, then learns the length of your own luteal phase instead of assuming 14 days • Fertile window and phase for every day of your cycle PATTERNS WITH THE EVIDENCE ATTACHED When Phasa spots something in your logs — headaches clustering before your period, low energy after short sleep — it tells you how many cycles that observation rests on. You decide how much it means. LOG IN SECONDS Flow, symptoms, mood, energy, sleep, temperature, cervical mucus, notes and photos. A calendar that shows logged days, predicted periods and your fertile window at a glance. MADE FOR DIFFERENT SEASONS OF LIFE Choose Period Tracking, Trying to Conceive, Pregnancy (week count, trimester and an estimated due date) or Perimenopause, where predictions widen to fit shifting and skipped cycles. PRIVATE BY DESIGN • No account and no sign-up • No server, no analytics, no ad code — your logs stay on your iPhone • Face ID / passcode lock and discreet reminders • Export everything as a file, or delete everything permanently, in one tap WORKS WITH YOUR IPHONE Two-way Apple Health sync, home-screen widgets, and a PDF summary you can take to an appointment. FREE AND PHASA PLUS Logging, the calendar, predictions, Apple Health sync, export and deletion are free. Phasa Plus adds deeper pattern analysis, your full charted history, PDF reports, partner sharing and custom symptoms. Phasa Plus: weekly ($3.99, 3-day free trial for eligible new subscribers), monthly ($9.99) or yearly ($29.99), or your local equivalent. Payment is charged to your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage them in your Apple ID settings. Terms of Use: https://phasa-app.web.app/terms.html Privacy Policy: https://phasa-app.web.app/privacy.html Phasa is an information tool, not medical advice, and it is not a contraceptive.

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The developer, Muhammad Saad Javaid, 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

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Muhammad Saad Javaid
    Size
    2.8 MB
    Category
    Health & Fitness
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    Languages
    English
    Age Rating
    13+
    • 13+
    • Learn More
    • Infrequent
      Medical Treatment information

      Contains
      Health or Wellness Topics
    In-App Purchases
    Yes
    • Phasa Plus Yearly $29.99
    • Phasa Plus Weekly $3.99
    • Phasa Plus Monthly $9.99
    • Learn More
    Copyright
    © 2026 Muhammad Saad Javaid
  • Developer Website
  • Privacy Policy