28/02/2026
Many fertility apps try to predict your fertile days. The Billings Ovulation Method® takes a completely different approach.
Instead of relying on algorithms, you learn to recognise your own daily symptoms and keep an accurate record of what you observe. This empowers you to understand your unique patterns of fertility and infertility, and to make informed decisions—whether your goal is to achieve pregnancy or avoid conceiving.
WOOMB International approves three online charting tools that support accurate daily recording and easy access to a qualified teacher:
💖BillingsApp Available on Apple and Google Play. The basic version is free, with a low cost Premium option that makes teacher support even more accessible.
💖FertilityPinpoint A computer based charting system that can also be used on a smartphone. Free for the first month, with affordable ongoing access.
💖nfpcharting.com Available on Apple and Google Play. Offers a free first month, followed by monthly or yearly subscription options.
Accurate charting is at the heart of the Billings Ovulation Method®. These tools help you keep a clear, reliable record—and connect with a teacher whenever you need guidance.