PearPetal

Private period & cycle tracker

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Track your cycle and fertility in complete privacy. No accounts, no servers, no cloud - your data lives only on your own phone. Share a scoped view with a partner. Track your menstrual cycle and fertility in complete privacy. PearPetal keeps your data on your own phone - no account, no server, no cloud. Not even we can see it. Your cycle blooms on a living petal dial: a flower that furls and opens as you move through your cycle, so a glance tells you your phase, your fertile window, and when your next period is due. KEY FEATURES - Private by design: your full cycle log lives only on your own devices, never on a server - The petal dial: a signature flower that tracks your phase across the cycle, plus a month calendar view - On-device predictions: next period, fertile window, and ovulation are computed on your phone from your own history - never sent anywhere - Log what matters: period start and flow, symptoms, mood, notes, and basal body temperature (BBT) - Goals that change the tone: general tracking, trying to conceive, avoiding, or a dedicated pregnancy mode - Cycle-aware for your body: enter conditions (like PCOS, endometriosis, thyroid) or birth control and predictions adjust - Share with a partner, on your terms: give a partner a scoped, read-only view - cycle phase only, your fertile window, or your full cycle - and end it any time - Gentle reminders: optional local notifications for your period or fertile days, with a discreet mode that hides the wording on your lock screen - Backups you control: export an encrypted, password-protected backup file to move to a new phone; nothing is ever uploaded - No accounts: your identity is a cryptographic key pair generated on your device - No data collection: PeerLoom, Apple, and no third party ever sees your cycle HOW IT WORKS PearPetal uses peer-to-peer technology powered by Hypercore Protocol. Your own devices - and a partner you have shared with - find each other and sync directly, device to device, with no middleman. All sync traffic is encrypted end to end, and every entry is cryptographically signed by the device that wrote it. The privacy boundary is structural, not a promise. Your full private log and anything you share with a partner live in two separate, separately-encrypted stores. The private log replicates only across your own devices. A partner share carries only the slice you consent to, written by you and read-only for your partner. Predictions are computed on your device and never cross the wire. Ending a share stops it going forward. PRIVACY - No accounts or sign-up required - No analytics, tracking, or telemetry - No third-party SDKs - All sync traffic is end-to-end encrypted - Your cycle data stays on your own devices, never uploaded anywhere - A partner only ever sees the scope you choose, and can never edit or re-share it IMPORTANT PearPetal is for personal tracking. Its predictions are estimates, not medical advice, not a diagnosis, and not a contraceptive method. Do not rely on them to prevent or achieve pregnancy. For medical questions, talk to a qualified healthcare professional. Open source. No vendor lock-in. Built by PeerLoom.

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## What's Changed New - Remove a day you logged by mistake. Open the day and tap "Remove this day". It asks first, and you can log that day again later if you need to. - Share your written notes with a partner who has the Full view. It is off until you switch it on for that partner. When you switch it on, your notes from the last three weeks appear for them too. When you switch it off, those notes disappear from their phone the next time it syncs with yours. - When your notes are shared, a small eye next to a day shows which notes your partner can read. Improved - Dates on your partner's screen and in your recent days now read like "Jul 23" instead of a string of numbers. - The notes box only says a note is shared when your partner can actually read it. Fixed - A day you remove now also disappears from your partner's screen. Before, it stayed there.

The developer, Timothy Hudgins, 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

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

    Seller
    • Timothy Hudgins
    Size
    • 80 MB
    Category
    • Health & Fitness
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    16+
    Copyright
    • © 2026 PeerLoom LLC