Cycle Computer Comparison: Daysy, Lady-Comp & Teena

Discover which cycle computer is the perfect match for your lifestyle.

Are you looking for a cycle computer that fits seamlessly into your daily routine, whether you want to understand your menstrual cycle, identify your most fertile days, or plan for pregnancy?

In our comprehensive cycle computer comparison, we break down the differences and unique benefits of Daysy, Lady-Comp, and Teena. This guide helps you find the device that suits your needs best.

What do all our cycle computers have in common?

All three devices share the same core principles:

Basal body temperature measurement with an integrated sensor
Offline usability, all devices work without internet
Stand-alone hardware (not just an app)
High measurement accuracy
Intelligent algorithms that learn from your personal cycle data
Daily temperature-based cycle support
Rechargeable, long-lasting devices
Strong privacy & data protection
Better understanding of your body
Clear graphic or digital evaluations (either on the device or via app)
Simple usage: measure once each morning, done
Suitable for all cycle types, including irregular cycles

Which device is right for whom?

Daysy: Ideal for women who want to closely track their cycle or plan a pregnancy while storing all data conveniently in an app. Perfect for precise natural family planning with modern digital support.
Lady-Comp: Great for women who prefer a classic, stand-alone device without app usage. Ideal for dedicated NFP users and those looking for a highly reliable, durable cycle computer.
Teena: Designed especially for teens and young women who want to learn about their bodies. No fertility prediction, instead, it focuses solely on cycle tracking, education, and confidence during puberty.

STAND-ALONE HARDWARE WITHOUT AN APP

Lady-Comp: The Pioneer of Cycle Computers

Lady-Comp is the original cycle computer: A proven, app-free device delivering all essential cycle information directly on its display. It’s perfect for anyone who prefers complete independence from smartphones or digital connectivity.

What makes Lady-Comp special?

Trusted method for over 35 years: With more than four decades of research and real-world use, Lady-Comp offers cycle information with 99.4% accuracy.
All information displayed on the device: Temperature, cycle day, and fertility status are shown clearly on the screen. No WiFi, no app, no syncing required.
Powerful autonomous analysis: Lady-Comp stores and evaluates your data directly on the device. Access up to 360 days of cycle history, predictions, statistics, and a detailed menstruation forecast.
Identifies hormonal imbalances: Lady-Comp can signal potential issues like luteal phase deficiency (CLI).
Displays estimated due date: If you become pregnant, the device automatically calculates your expected due date, supporting both cycle tracking and your early pregnancy journey.

Get Lady-Comp

THE SMART SOLUTION FOR PRECISE FERTILE DAYS

Daysy: The Perfect Combination of Device & App

Daysy is a modern, easy-to-use fertility tracker that combines compact hardware with advanced digital insights through the DaysyDay app. It offers accurate temperature measurement and intuitive cycle analysis, ideal for women who want both simplicity and detailed understanding.

What makes Daysy special?

99.4% proven accuracy: Daysy reliably distinguishes fertile from non-fertile days.
Fast & effortless daily use: Measure once in the morning (takes only 60 seconds), confirm menstruation if needed, and Daysy instantly shows your fertility status via a simple color light signal.
Perfect harmony of device & app: Daysy calculates your fertility independently, while the app provides deeper insights: temperature curves, cycle charts, predictions, trends, and more, ideal for sharing with your doctor or partner.
Optional partner app: If you choose, your partner can view your day-specific cycle status. You control what is shared and when.

Get Daysy

THE EASY ENTRY INTO THE WORLD OF CYCLE TRACKING

Teena: The Smart Period Tracker for Teens & Young Women

Teena is the first period tracker designed especially for teenagers and young adults. It helps users understand their menstrual cycle with confidence and ease, without fertility predictions. Teena focuses entirely on menstrual health, self-awareness, and education.

What makes Teena special?

A simple, beginner-friendly start: Teens measure their basal temperature once each morning, Teena takes care of the rest. No cycle knowledge required.
Accurate period prediction: Based on temperature data, Teena provides a clear, reliable forecast of upcoming periods, helping teens plan school, sports, or daily life with confidence.
Educational app content: The optional app includes age-appropriate articles, videos, and self-care tips, scientifically sound, approachable, and stigma-free.
Symptom tracking & affirmations: Teens can document mood and physical symptoms, learning to understand and interpret their body’s signals.

Get Teena