To achieve a pregnancy
Learning to recognize fertility signs helps identify opportunities for conception. The method guides the timing of intercourse but does not guarantee pregnancy or replace a fertility assessment when needed.
BILLINGS METHOD. INFORMED CHOICES.
Your body has a story. Learn to listen.
A fertility awareness app to record cervical mucus and sensation, notice changes, and learn about the Billings Method. Your private journal to support learning when achieving or spacing a pregnancy.
Your private space. Your words. Your pace.
One entry at a time
Today, I took a little time to notice myself.
A journal of your ownYour records on any devicePortuguese, Spanish, and English
NATURAL REPRODUCTIVE PLANNING
Knowing your fertility opens possibilities.
The Billings Ovulation Method is a fertility awareness approach based on daily observation of vulval sensation and cervical mucus. It can be used to achieve or space pregnancies, without hormones or contraceptive devices.
To space pregnancies
As a natural contraceptive method, it requires qualified instruction, daily observation, and consistent application of the rules, including abstinence during the specified periods. It is a shared commitment between partners.
BILLINGS
Observable signs. A physiological basis.
Hormonal changes throughout the cycle affect the mucus produced by the cervix and the sensation felt at the vulva. Before ovulation, rising estrogen promotes mucus that supports sperm survival and transport. Billings teaches you to recognize these changes and patterns — it is not a calendar-based day count.
Understanding effectiveness
The method has been studied, but results vary across studies and between correct and typical use. A systematic review found low- to moderate-quality evidence for fertility awareness methods. Avoiding pregnancy is not guaranteed. Billings does not protect against sexually transmitted infections (STIs).
FertilityOps compares entries, identifies repetition and changes, and provides explanatory statuses to support interpretation. This analysis has not yet been clinically validated for contraception: it does not confirm ovulation or guarantee safe days. The subscription does not include individual instruction; the app is independent, with no official affiliation with or endorsement by Billings organizations.
MORE PRESENCE. MORE SELF-KNOWLEDGE.
Small signs tell your story, too.
You don’t need to know everything to begin. The first step is noticing what you feel, without pressure or judgment.
Notice your body
Pay attention to the sensations and signs throughout your day. Every observation has a place.
Write it your way
Record sensation, mucus appearance, bleeding, and intercourse context in your own words. Incomplete days and uncertainty have a place, too.
Understand the pattern reading
See changes, matches to your reviewed reference, and post-Peak follow-up. Each status explains its reasoning and supporting entries; the app also flags missing information.
A SPACE THAT MAKES SENSE FOR YOU
Your cycle, with more context.
A place to record, notice changes, and learn at your own pace.
A moment for you. In your words.
Record what you noticed during the day, with room for details and uncertainty.
My dayEXAMPLE
Tuesday, April 14
In your own words
I noticed a moist sensation during the afternoon. I want to observe how I feel tomorrow.
Observation recorded
The days start to make sense.
See what repeats and what changes, with explanations that give your entries context.
ReferenceSignsUnclear
Colors identify patterns, not levels of risk.
31 readings. Your pace.
Explore the method, one discovery at a time.
Your story, organized.
Revisit your entries and take your history with you.
Illustrative previews with fictional entries.
KNOWING YOURSELF IS SELF-CARE
Closer to your body. Closer to yourself.
Achieving or spacing pregnancies starts with information and shared choices. Make time to observe your body, record its signs, and discuss your questions with a qualified instructor. Your journal accompanies you along the way.
Find my planPERSONAL THINGS DESERVE CARE
Your journal is personal. Protection matters, too.
Your observations stay in your account. Journal content is not sent to Stripe, which processes payments.
Protected on the server
Your journal is encrypted in the database and accessed through your account.
Keep your records with you
Export a copy of your history in JSON or CSV whenever you want.
How are my records protected?
Encryption happens on the server, not end to end. Administrators with access to the application key can decrypt the data. Server backups are encrypted and retained for 30 days; files you export are not encrypted.
A LITTLE COMMITMENT TO YOURSELF
Choose your rhythm of care.
Every feature in every plan. Only the billing period changes.
Monthly
Start at your own pace
US$ 9/month
US$ 9 billed every month.
Flexibility to get started.
Choose Monthly- Pattern readings with explanations
- Reviewed reference, possible Peak, and post-Peak
- Journal, chart, and revision history
- 31 readings with progress tracking
- 3 languages and JSON/CSV export
Six months
Make space for a habit
US$ 7.50/month
US$ 45 billed every 6 months.
Save US$ 9 every six months (17%).
Choose Six months- Pattern readings with explanations
- Reviewed reference, possible Peak, and post-Peak
- Journal, chart, and revision history
- 31 readings with progress tracking
- 3 languages and JSON/CSV export
Annual
Best valueMore time to know yourself
US$ 6/month
US$ 72 billed every year.
Save US$ 36 a year (33%).
Choose Annual- Pattern readings with explanations
- Reviewed reference, possible Peak, and post-Peak
- Journal, chart, and revision history
- 31 readings with progress tracking
- 3 languages and JSON/CSV export
From plan to journal, without signing up first.
- Choose your plan
The button opens Stripe checkout directly.
- Complete payment
Enter your email and payment details on Stripe.
- Receive your access
We send an email after confirmation. For your first purchase, follow the link to set your password.
Savings compared with the monthly plan over the same period. Percentages are rounded.
Automatically renews for your chosen period. Cancel the next renewal in the portal; access continues until the end of your paid period.
Prices in US dollars (USD). Your bank may apply exchange rates and fees. Stripe displays the total before confirmation.
GOOD QUESTIONS
Before you begin…
Do I need an account before buying?
No. Choose a plan and pay directly on Stripe. After confirmation, access is sent to the email provided at checkout. For your first purchase, follow the link to set your password. If you already have an account with that email, use your usual password; your entries are preserved.
Does the subscription include an instructor?
No. It includes the journal, automatic pattern readings, and 31 educational readings. An instructor review shown in the journal is information you record; it is not a consultation provided by the app. Individual instruction must be arranged separately.
Can Billings be used to achieve or space pregnancies?
Yes. The method teaches fertility pattern recognition to guide intercourse according to the couple’s goal. Spacing pregnancies requires following the rules, including periods of abstinence, with qualified instruction. The app supports recording and learning without making those decisions for you.
Does the app help identify fertility patterns?
Yes. It compares recorded sensations and appearance, flags changes compatible with possible fertility, matches to a reviewed BIP, and sequences after a Peak you marked. It also indicates insufficient data or a need for review. Statuses explain the evidence used, without invented percentages, confirmation of ovulation, or a contraceptive guarantee.
Do I need to know the Billings Method?
You can start with the journal and learn gradually through the readings. Educational content does not replace guidance from a qualified instructor when applying the method.
Can I use it on my phone and computer?
Yes. Open it in your browser and sign in to the same account on any device. You need an internet connection to load and save entries.
How do billing and cancellation work?
Billing is recurring in USD: US$ 9 monthly, US$ 45 every six months, or US$ 72 yearly. Cancel your next renewal in the portal. Access continues until the end of the paid period; afterward, existing records remain available to read and export.
Charting & learning
Understand the signs. Give your journal context.
Explore the app and three practical introductions to observing your own pattern.
A new way to see your cycle starts with you.
Make space to notice yourself. One day at a time.
Choose my plan