BBT & mucus tracking
Log basal body temperature and cervical mucus in seconds. The app draws your symptothermal chart automatically.
Natural fertility awareness · iOS & Android
The cycle app for women who came off the pill.
My Body's BFF teaches you the symptothermal fertility awareness method — so you can read your hormones, know your fertile window, and trust your body again. No hormones. No guesswork. Just your body, decoded.
4.8 ★
App Store rating
15k+
Women off the pill
99.6%
FAM perfect-use rate
What is FAM?
Fertility awareness, finally made for the post-pill generation.
The fertility awareness method (FAM) is a science-backed way to track your cycle by reading your body's natural biomarkers — basal body temperature, cervical mucus and cycle length — so you can identify your fertile window without hormonal contraception.
My Body's BFF was built for the millions of women coming off the pill who want a smarter alternative than calendar-based period apps. We don't predict from history — we teach you to read your body in real time.
It's not a hack. It's a method. Practiced correctly, the symptothermal method has a perfect-use effectiveness of up to 99.6%, on par with many hormonal options.
What you get
Everything to read your body — in one app.
Built with certified FAM educators, refined by 15,000+ women already living off the pill.
Real-time fertile window
Your fertile window is calculated using FAM rules — not period averages — so it adapts as your cycle does.
Post-pill mode
A dedicated mode that adapts predictions while your hormones rebalance after coming off birth control.
Coach-led education
Bite-sized lessons from certified fertility awareness educators — learn the method as you live it.
How it works
Read your cycle in three daily habits.
01
Take your morning temperature
30 seconds with a basal thermometer, before getting out of bed. The app guides you through the first cycles.
02
Note your mucus signs
Log changes in cervical mucus throughout the day. We teach you exactly what to look for.
03
Read your personalised chart
Your fertile window, ovulation confirmation and cycle phase appear in real time — no calendar guessing.
Meet your coach
Built by women who came off the pill — and never looked back.
"I built this app because the one I needed didn't exist. Period apps weren't designed for women coming off hormones. We deserved something smarter — and rooted in real science."
- Certified [REPLACE: certification body, e.g. SymptoPro / Justisse / FEMM]
- [REPLACE: years] years coaching women through post-pill transitions
- Methodology reviewed by [REPLACE: medical advisor / OB-GYN]
The science
Methodology rooted in peer-reviewed FAM research.
The symptothermal method we teach has been studied for over four decades. When practiced correctly, it ranks among the most effective non-hormonal fertility awareness approaches available.
Reference: Frank-Herrmann et al., Human Reproduction, 2007 — symptothermal method effectiveness study.
99.6%
Perfect-use effectiveness of the symptothermal method
98.2%
Typical-use effectiveness (correct + consistent)
3-9 mo
Average time for cycles to fully regulate after the pill
Loved by women off the pill
"I finally understand my own body."
★★★★★
"After 8 years on the pill, I had no idea what my own cycle even looked like. Three months in and I'm reading my body like a book."
★★★★★
"The post-pill mode is a game changer. Other apps couldn't predict anything for the first 6 months. This one adapted to me."
★★★★★
"It's like having a hormone coach in my pocket. Real science, no woo, and the design is beautiful."
FAQ
Questions women off the pill ask us most.
What is the fertility awareness method (FAM)?
The fertility awareness method (FAM) is a science-backed approach to tracking ovulation by observing biomarkers such as basal body temperature, cervical mucus and cycle length. It allows women to identify their fertile window without hormonal contraception, and is recognised by reproductive health research as a valid family planning method when used correctly.
Is My Body's BFF safe to use as non-hormonal birth control?
My Body's BFF teaches the symptothermal fertility awareness method, which has a typical-use effectiveness of 76-88% and a perfect-use effectiveness of up to 99.6% according to peer-reviewed studies. It is intended as an educational and tracking tool. We always recommend learning the method properly and, if avoiding pregnancy, using barrier protection during your fertile window.
Is My Body's BFF free?
Yes. My Body's BFF is free to download on the iOS App Store and Google Play. The core fertility awareness tracking, cycle insights and education library are free. Optional premium coaching unlocks 1-on-1 hormone coach access and advanced cycle analytics.
How long after coming off the pill should I start tracking?
You can start tracking the moment you stop the pill. Cycles often take 3 to 9 months to fully regulate after hormonal contraception. My Body's BFF includes a dedicated post-pill mode that adapts predictions while your hormones rebalance.
How is this different from Flo, Clue or Natural Cycles?
My Body's BFF is built specifically for women who are off hormonal birth control and want to learn the symptothermal fertility awareness method. Unlike calendar-based apps that predict from period dates alone, we teach you to read your own biomarkers, with founder-led coaching and a methodology rooted in peer-reviewed FAM research.
Do I need a basal body thermometer?
For accurate symptothermal tracking, yes. A basal body thermometer measures temperature to two decimal places and reveals the post-ovulation temperature shift. Any pharmacy BBT thermometer works, and we offer in-app guidance on the most accurate models.
Ready when you are
Your body has been talking. Time to listen.
Join 15,000+ women using fertility awareness instead of hormones. Free to download. No paywall to start.