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Clue Period & Cycle Tracker
Ovulation Calendar & Pregnancy
Only for iPhone
Free · In-App Purchases
iPhone
Understand your body. Plan around your cycle. Know what’s coming next.
Clue is the #1 women-led period and cycle tracker – science-backed, privacy-first, and built to help you live in sync with your cycle.
Trusted by millions of people worldwide, Clue gives you the knowledge and personalized insight to make confident health decisions, from first period to perimenopause.
Headquartered in Berlin, your data is protected by strict European privacy law (GDPR).
Track your period and cycle
Know when your period is coming, and get personalized predictions based on your unique cycle length, flow, and patterns.
See how your cycle affects how you feel
Track 200+ symptoms and experiences – cramps, PMS, pain, energy, cravings, mood, skin, sleep, sex drive, discharge, and more. Your patterns, in clear charts.
Get ahead of symptoms
See what might be coming, from PMS and cramps to energy dips, so you can plan ahead. Set custom reminders so nothing catches you off guard.
Understand your fertility
Get personalized ovulation and fertile window predictions, based on a clinically-validated algorithm designed to help you conceive.
Stay on track with birth control
Log your method – pill, IUDs, ring, patch, and more. Track your cycle symptoms even without regular bleeding.
Get real answers, backed by science
Explore 400+ articles on your cycle, fertility, sex, pregnancy, perimenopause, and reproductive health.
Use Clue through every life stage
Switch between modes as your needs change. Period tracking, trying to conceive, pregnancy, and perimenopause.
Connect a wearable
Layer your cycle data with temperature, sleep, and heart rate for deeper health insights. Works with Apple Watch, Oura, WHOOP, Withings, Fitbit, and more.
Get more from every cycle with Clue Plus — deeper analysis, advanced predictions, and personalized insights that get smarter the more you track.
A few legal details:
After you choose the Clue subscription that’s right for you & confirm your purchase, the credit card associated with your iTunes Account will be charged. Once purchased, your subscription will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. If you currently have a free trial, any unused time will be forfeited when you purchase a subscription.
If you want to renew your subscription, your account will be charged the same amount you paid for your initial subscription, 24 hours before the end of the current period. You can manage or change your subscription at any time, including turning off auto-renewal, by going to the ‘Account Settings’ on your device after the purchase.
Note: Clue should not be used as a contraceptive. Clue is made to help people understand their menstrual and reproductive health by tracking their data, as well as predicting fertile days to aid conception. The app does not substitute professional medical advice, diagnosis, or treatment. Your healthcare provider can give you advice on your specific needs and situation.
Helloclue.com
support.helloclue.com
Terms of Service: www.helloclue.com/terms
Privacy Policy: www.helloclue.com/privacy
We update the Clue app every week with bug fixes, performance improvements, and new features to make your cycle tracking more accurate and comprehensive.
If you have questions or feedback for the team, browse our FAQs or contact us anytime through the contact form in the Support Section of the app (More Menu, Support).
Enjoying the Clue app? Feel free to leave us an App Store rating and review.
The developer, BioWink GmbH, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Location
- Contact Info
- User Content
- Identifiers
- Usage Data
- Sensitive Info
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Size
- 292.4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later.
- iPhone
- Languages
English and 26 more
- English, Arabic, Danish, Dutch, French, German, Greek, Hindi, Hungarian, Indonesian, Italian, Japanese, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Spanish, Swahili, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
13+
- 13+
- Infrequent
Mature or Suggestive Themes
Medical Treatment Information
Sexual Content or Nudity
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Clue Period Tracker - 1 year 299,00 kr
- Clue Plus by BioWink GmbH 299,00 kr
- Clue Plus by BioWink GmbH 79,00 kr
- Clue Period Tracker - 1 year 309,00 kr
- Clue Period Tracker - 1 Month 75,00 kr
- Clue Period Tracker - 1 Month 75,00 kr
- 1 Month 75,00 kr
- Clue Period Tracker - 1 year 269,00 kr
- Clue Plus by BioWink GmbH 249,00 kr
- Clue Period Tracker - 12 Month 309,00 kr
- Provider
BioWink GmbH
- BioWink GmbH has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
- Medical Device
Yes
- BioWink GmbH indicated this app is a regulated medical device and complies with European Union law.
- The information below has not been verified by Apple.
- Manufacturer SRN
- DE-MF-000030007
- Address
- Adalbertstr. 7-8
10999 Berlin
Germany - Phone Number
- +49 160 96717689
- Email Address
- greg@helloclue.com
- Use Statement
- Clue is intended for aiding users in understanding their menstrual and reproductive health by tracking data with regards to general, menstrual and reproductive health. Within Clue, women who are trying to conceive can select Clue Conceive mode, a medical device feature predicting and displaying a woman’s fertile days as an aid for conception. Clue is not intended to be used for contraceptive purposes.
- Safety Information
- There are no warnings or precautions to be observed when using the device. Clue is not intended to be used for contraceptive purposes.
- Instructions for Use
- Visit the developer site
- Copyright
- © BioWink GmbH