Clue Period & Cycle Tracker icon
Clue Period & Cycle Tracker: Comprehensive Review of the Science-Based Monitoring App

by BioWink GmbH

Clue provides evidence-based menstrual cycle tracking with gender-neutral design. The app serves users tracking fertility, pregnancy, or general cycle awareness through scientifically validated predictions and comprehensive symptom logging.

Detailed Review

Clue Period & Cycle Tracker stands as a scientifically-grounded menstrual health application developed by BioWink GmbH, offering comprehensive cycle monitoring through an evidence-based approach. The application distinguishes itself in the crowded health tracking market through its research-backed methodology and commitment to data privacy, operating from its Berlin headquarters under strict EU data protection regulations. The application's core functionality encompasses period prediction, fertility window tracking, and extensive symptom logging across physical, emotional, and behavioral categories. Users can monitor over 30 health indicators including mood fluctuations, energy levels, sleep patterns, and physical symptoms. The platform offers specialized modes for conception tracking and pregnancy monitoring, providing tailored insights for different reproductive stages. Data visualization presents cycle patterns through clean charts and temporal analysis, enabling users to identify correlations between cycle phases and various health metrics. User experience demonstrates thoughtful design with intuitive navigation and gender-neutral language throughout the interface. The clean, minimalist aesthetic prioritizes functionality while reducing visual clutter. Real-world usage patterns show consistent engagement across tracking activities, with users frequently utilizing the notification system for period predictions, fertility windows, and symptom reminders. The application maintains accessibility through both free and premium subscription models, with Clue Plus offering enhanced analytics and personalized insights. User feedback consistently highlights several positive trends, including appreciation for the scientific approach and inclusive design. Reviewer the_creature_likes_bread (2025-07-15) specifically praised the gender-neutral language as 'a huge plus for me as a nonbinary person.' Multiple users including Mitvr (2025-07-15) reported successful use through pregnancy tracking phases, while mahshad zare (2025-07-02) noted exceptional customer support responsiveness. Some limitations emerge regarding age restrictions, as Narine h (2025-07-07) encountered when attempting to setup the app for a 12-year-old due to the 13+ age requirement. The application demonstrates particular strength in scientific validation and inclusive design, though faces limitations in younger user accessibility and regional payment restrictions as noted in reviews. Ideal use cases include evidence-based cycle monitoring for adults seeking either contraception management, conception planning, or general health awareness. The platform serves most effectively for users preferring data-driven insights over anecdotal approaches, with particular value for LGBTQ+ users seeking inclusive reproductive health tools.

Key Features

  • Science-based cycle predictions using peer-reviewed algorithms to forecast periods and fertility windows with medical-grade accuracy
  • Comprehensive symptom tracking covering 30+ physical and emotional indicators to identify patterns across menstrual phases
  • Gender-neutral interface design that accommodates diverse users through inclusive language and customizable tracking categories
  • Pregnancy mode providing specialized tracking for prenatal symptoms and health metrics during gestation periods
  • Data encryption and EU privacy compliance ensuring user health information remains secure and confidential
  • Multi-device synchronization allowing seamless access to cycle data across iOS platforms with cloud backup

Why Users Love It

Evidence-based predictions
Inclusive design approach

Perfect for: Adults seeking scientific menstrual cycle tracking with inclusive design

Screenshots

Clue Period & Cycle Tracker screenshot 1Clue Period & Cycle Tracker screenshot 2Clue Period & Cycle Tracker screenshot 3Clue Period & Cycle Tracker screenshot 4Clue Period & Cycle Tracker screenshot 5Clue Period & Cycle Tracker screenshot 6

User Reviews

Mitvr
Jul 16, 2025

I have been using this application for about 3 years, it is the best and now it helps me a lot especially during my pregnancy, with the notes to keep track of my symptoms in the prenatal and before being pregnant the “try to conceive” mode was very helpful, in addition, being able to have the Clue Plus for a year and at a low cost is really great. Always recommend this app. The best app I have been using this application for about 3 years, it is the best and now it helps me a lot especially during my pregnancy, with the notes to keep track of my symptoms in the prenatal and before being pregnant the “try to conceive” mode was very helpful, in addition, being able to have the Clue Plus for a year and at a low cost is really great. Always recommend this app.

the_creature_likes_bread
Jul 15, 2025

clue plus is literally the only app subscription i have. while it might not seem like much, the gender neutral language that clue uses throughout the app is a huge plus for me as a nonbinary person. it gets tiring to always hear “WOMEN’S health” and “FEMININE hygiene products” when i just want to take care of my body. i also appreciate the options to track HRT or to track experiences without a period (super helpful for those on certain types of birth control). and especially with all the chaos in the US government right now, i’m really glad to use an app with such a dedication to digital privacy. (their blog posts are also great btw, especially if you’re like me and had exactly zero discussion of LGBTQ+ stuff in high school sex ed.) very trans friendly! clue plus is literally the only app subscription i have. while it might not seem like much, the gender neutral language that clue uses throughout the app is a huge plus for me as a nonbinary person. it gets tiring to always hear “WOMEN’S health” and “FEMININE hygiene products” when i just want to take care of my body. i also appreciate the options to track HRT or to track experiences without a period (super helpful for those on certain types of birth control). and especially with all the chaos in the US government right now, i’m really glad to use an app with such a dedication to digital privacy. (their blog posts are also great btw, especially if you’re like me and had exactly zero discussion of LGBTQ+ stuff in high school sex ed.)

BrennaFree
Jun 27, 2025

I’ve enjoyed using Clue through multiple phases of my menstrual journey from knowing when to expect it, to tracking fertility, to monitoring pregnancies and now navigating perimenopause/ menopause. It lets me track relevant symptoms and be better prepared. Researched backed, privacy committed, supportive across phases of life I’ve enjoyed using Clue through multiple phases of my menstrual journey from knowing when to expect it, to tracking fertility, to monitoring pregnancies and now navigating perimenopause/ menopause. It lets me track relevant symptoms and be better prepared.

daredycat
Jun 27, 2025

Standing up for WOMEN!!! I’ve used Clue for years. I love how it keeps me on track. Now that I’m, maybe, entering menopause, it helps me see new patterns. But after I received Clue’s privacy promise, I couldn’t love your app more!!! Thank you for standing up for women, and standing up for our privacy and autonomy! I’m beyond impressed. Steps like this pave the way for the future we deserve!!! Way to go, Clue!! Standing up for WOMEN!!! I’ve used Clue for years. I love how it keeps me on track. Now that I’m, maybe, entering menopause, it helps me see new patterns. But after I received Clue’s privacy promise, I couldn’t love your app more!!! Thank you for standing up for women, and standing up for our privacy and autonomy! I’m beyond impressed. Steps like this pave the way for the future we deserve!!!

Elena M12345
Jun 26, 2025

As Americans, we deeply appreciate your commitment to protecting user data. Please continue to stand strong—not just by resisting subpoenas, but by refusing to sell so-called “anonymized” data to brokers. That’s how most government access happens. True privacy means keeping all our data safe, not just the obvious parts. Thank you for protecting our privacy! As Americans, we deeply appreciate your commitment to protecting user data. Please continue to stand strong—not just by resisting subpoenas, but by refusing to sell so-called “anonymized” data to brokers. That’s how most government access happens. True privacy means keeping all our data safe, not just the obvious parts.

App Details

Developer

BioWink GmbH

Platform

ios

Rating

4.8

Last Updated

9/7/2025