Your period data.
On your device only.
The open-source, 100% offline tracker that puts privacy first. No accounts, no cloud, no tracking. Just your health, simplified.
Privacy by Default
Your health data isn't a commodity. Menstrudel stores everything locally on your device, ensuring your most personal information stays exactly where it belongs: with you.
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Zero Cloud: Your data never leaves your phone. No accounts, no servers.
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100% Offline: Full functionality without an internet connection.
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Open Source: Transparent, community-driven, and free forever.
Features for Every Cycle
Precision Logging
Track cycles, symptoms, and intensity with a clean, clutter-free interface.
Smart Predictions
Get reliable forecasts for your next cycle based on your unique history.
Pill Tracking
Support for 21-day, 28-day, or custom packs with simple daily logging.
LARC Management
Manage IUD, Implant, or Injection renewal dates with proactive alerts.
Custom Alerts
Smart reminders for periods, medication, and contraceptive renewals.
Global Support
Built for everyone. Community-translated into multiple languages.
Experience the Interface
Built for clarity, not for data mining. See how Menstrudel simplifies your health tracking.
View Screenshots