Period & Cycle Tracker
Know your cycle.
Privacy-first period tracking with AI-powered predictions. 90%+ accuracy, completely on your device.
Privacy-first period tracking with AI-powered predictions. 90%+ accuracy, completely on your device.
Built from the ground up with privacy and accuracy as core principles.
All data stays on-device. Optional encrypted iCloud sync. No servers, no tracking.
90%+ accuracy with Core ML. Runs entirely on your device, never in the cloud.
Log cramps, mood, energy, flow intensity, and custom symptoms.
Integrates with Apple Health for a complete picture of your wellbeing.
Visualize trends and patterns across your cycles with clean charts.
Visual cycle calendar with predictions, fertile windows, and reminders.
Shark uses advanced machine learning that runs entirely on your device. No cloud processing, no data sharing -- just accurate predictions that get smarter with every cycle.
Getting started takes less than a minute.
Track your period, symptoms, and mood with a few taps.
AI analyzes your data to find patterns and predict your next cycle.
Get personalized insights and understand your body better.
Start free. Upgrade when you're ready.