Fertility & Cycle
Tracking Made Simple
Take control of your reproductive health with Vainly — a secure, privacy-focused app supporting the Marquette Method of Natural Family Planning.
Visual Calendar Tracking
See your entire cycle at a glance with color-coded fertility indicators and fertile window predictions.
Why Choose Vainly?
Designed with your privacy and health in mind, Vainly offers everything you need for natural family planning.
Privacy Focused
Your personal health data is encrypted and stored only on your device. We never sell or share your information.
Simple Design
Clean interface with easy daily logging. Track cycles, fertility signs, and intimacy events effortlessly.
Evidence-Based
Fertility predictions based on the proven Marquette Method of Natural Family Planning with scientific algorithms.
Cycle Tracking
Log menstrual cycles, hormone readings, and view personalized trends and statistics.
Secure Backup
Built-in encrypted backup and restore functionality keeps your data safe and accessible.
Family Planning
Support your family planning goals with accurate fertile and infertile day identification.
Take the guesswork out of cycle tracking
Join thousands of women who trust Vainly for their natural family planning journey.
* Requires Clearblue fertility monitor (sold separately)