Petal: Period Tracker

Your cycle data stays 100% on your phone. Track periods, symptoms, mood and fertile days, get clear predictions, and lock the app. Free, no account, no subscription.

A beautiful, private period and cycle tracker that keeps 100% of your data on your phone. No account, no cloud, no subscription. Track your period, flow, symptoms, mood and fertile window, get clear period and ovulation predictions, and lock the app with a PIN or fingerprint. Free, offline, and yours alone.

Most period apps want a sign-up, send your most personal data to the cloud, and nudge you toward a subscription. Petal does the opposite. Your cycle stays on your device, every core feature is free, and reminders are calm and opt-in.

PRIVATE BY DESIGN

• 100% on-device. Your cycle data never leaves your phone.
• No account, no cloud, no sign-up, ever.
• Lock the app with a PIN or fingerprint, plus a discreet mode.
• One-tap delete-all and an encrypted local backup you control.

TRACK YOUR WHOLE CYCLE

• Log your period and flow (spotting, light, medium, heavy) in a single tap.
• Record symptoms, mood, energy, sleep, cravings, discharge and notes.
• Add custom symptoms for whatever matters to you.
• A beautiful month calendar plus a signature circular cycle ring.

HONEST PREDICTIONS

• Estimates for your next period, fertile window, ovulation and PMS days.
• Shows ranges and confidence, and stays honest about irregular cycles.
• Learns and adapts the more you log.

INSIGHTS THAT COMPOUND

• Average cycle and period length, variability and trends.
• Symptom and mood patterns across each cycle phase.
• Full cycle history and a doctor-ready PDF health report.

MODES FOR EVERY STAGE

• Tracking mode for everyday cycle awareness.
• TTC mode with fertile-window focus, a BBT chart and ovulation-test logs.
• A basic pregnancy mode for when you are expecting.

CALM, OPT-IN REMINDERS

• Period soon, period late, fertile window, ovulation, pill and log reminders.
• Each one is independent and gentle, never spam.

FREE, WITH NO PAYWALL CREEP

• Every feature, including tracking, predictions, insights, PDF export, app lock and backup, is free.
• No subscription and no bait-and-switch paywall.
• Supported by tasteful ads, with an optional one-time upgrade to remove them.

Petal is the beautiful, complete period tracker that is also genuinely private and genuinely free. Understand your body's rhythm on your terms, and on your phone.

Note: Petal is a self-tracking and educational tool. Predictions and fertile-window estimates are not a reliable form of contraception and are not medical advice. Please talk to a clinician about any health concerns.