Your menstrual cycle
decoded
Clue is the science-based, data-driven menstrual and reproductive health app, trusted by 10 million globally.
100M+
App downloads
4.8
2.5M+
reviews
Make every cycle count
With Clue, you’ll turn your menstrual cycle into a powerful tool to uncover insights into your overall health and fertility. Whether you’re just wanting to understand your cycle, trying to conceive, navigating perimenopause, or managing menstrual symptoms, Clue is your trusted companion app through every change and choice.
Science based
Clue is CE-marked Class 1 medical-grade device.
From a women-led team
Made with deep insight and care in Berlin, Germany.
Strict data privacy
We'll never let your data be used against you.
What our users say
Observe
Track 200+ unique experiences
Our subscription models
Free
Clue Basic
Create an account for free
Get essential cycle statistics
Plan ahead with basic cycle predictions
Premium
Clue Plus
Unlock advanced cycle insights, predictions and pattern analysis
Switch tracking modes based on your specific needs and goals
Use Clue Connect to share your cycle with a partner or loved one
Enjoy unlimited access to content from medical experts
Unlimited tracking customization
Track without a period
No period? No problem. Track hormonal cycle-related experiences without needing to track menstrual bleeding.
Help us illuminate the blindspots in female health
With 15 billion data points and counting, we're on a mission to use data for good with our research partners from institutions like Berkeley, 4M, MIT to close the diagnosis gaps for historically under-researched and misdiagnosed conditions like endometriosis, PMDD, PCOS, and so many more.
Your data is safe with us.
No matter where you are in the world, if you use Clue, we will never allow your private health data to be used against you. We have never and will never sell data to third parties or disclose your data to any authority, under any circumstances. Your Clue data is always protected by the strictest data privacy laws in the world.
Learn more
Regulated by the GDPR
Latest articles
