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About Clue
What Clue Does
Clue is a period and cycle tracker app that helps you understand your body through science-based, data-driven tracking. It predicts your period, PMS, ovulation, and fertile windows so you can anticipate symptoms before they start and plan accordingly.
Problem It Solves
Many cycle trackers lack scientific rigor or compromise user privacy. Clue solves both: it uses evidence-based methods to analyze cycle patterns while never selling or sharing your health data, protected by strict EU privacy laws.
Who It Is For
Clue is designed for anyone with a menstrual cycle, from teens experiencing their first period to women approaching perimenopause. It is ideal for those who want reliable cycle predictions, symptom tracking, and fertility awareness without compromising data privacy. It is not intended as a medical diagnostic tool or a contraception-only app.
Real Use Cases
Track daily cycle symptoms in seconds, log mood changes to see how your cycle affects emotions, know exactly when your next period and ovulation days are coming, and turn gut feelings into evidence-based insights with the science-backed predictions.
Key features
- Cycle Predictions — Get accurate predictions for period, PMS, ovulation, and fertile days.
- Symptom Tracking — Log symptoms in seconds and see how they connect to your cycle phases.
- Mood Monitoring — Understand how your cycle influences your emotions and energy levels.
- Ovulation Alerts — Know your fertile window for planning or prevention.
- Privacy First — Your health data is never sold or shared; protected under strict EU laws.
- Multi-Life Stage Support — Works from first period through perimenopause with relevant tracking options.
- Science-Based Insights — Evidence-driven analysis turns your tracking into personalized cycle intelligence.
SaaSpartout Score
6.7
/10
Editorial score from our review methodology — not user ratings.
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Clue Pricing
Clue pricing: from $9.99/mo.
For comparison: the median starting price in Personal Development is $12.99/month, measured across 58 tools we track. See the full SaaS Pricing Index →
Free Plan
Free — Track your period, symptoms, and cycle with basic predictions. No credit card required.
Clue Plus
$9.99/month or $39.99/year — Unlock detailed cycle analysis, advanced prediction models, deeper symptom insights, and no ads.
Free trial available for Clue Plus — start today and cancel anytime.
Frequently asked questions
How much does Clue cost?
Clue offers a free plan with basic tracking and predictions. Clue Plus costs $9.99/month or $39.99/year for advanced insights and ad-free experience. A free trial is available.
Is Clue free to use?
Yes, Clue has a free plan that includes period and cycle tracking, symptom logging, and basic predictions. Paid plans unlock deeper analytics.
Who is Clue best for?
Clue is best for anyone with a menstrual cycle, including teens, adults, and those approaching perimenopause, who want a science-based, privacy-focused tracker.
What are the top alternatives to Clue?
Popular alternatives include Flo, Natural Cycles, Ovia, and Period Tracker. Clue stands out for its strict privacy policy and science-first approach.
Does Clue track ovulation?
Yes, Clue predicts your fertile window and ovulation days based on your logged cycle data, using evidence-based algorithms.
Is my health data safe with Clue?
Yes. Clue has never sold user health data and never shares it with authorities. All data is protected by strict German and EU privacy laws, regardless of your location.
