$4.99

Details

  • Released
  • Updated
  • December 10, 2015
  • February 3, 2026

Features

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About

This app helps you observe, record, and interpret fertility symptoms using the Billings Method. It generates fertility charts, identifies peak days, and predicts menstruation, aiding in achieving or avoiding pregnancy. It offers an intuitive visual format and supports multiple languages.

Observe and record fertility symptoms
Automatic fertility chart generation
Interpret daily fertility status
Recognize Peak day and predict menstruation
Identify Basic Infertile Pattern (BIP)
Apply Billings Method rules
Multi-language support
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What's New in billingsMentor®

4.4

February 3, 2026

Bug fixes

User reviews

Archaic

It feels like 1980 ….very difficult to use !

Overwhelmingly Frustrating to understand

I have tried to use this app any time, and each time I give up in frustration! It is not clear in how to use the app and it confusing? Athletically it frustrating trying to navigate and, what should be a VERY SIMPLE chart and symboled system, is turned in to a complicated muddle, ever time I try to even figure out what I am supposed to do! I even tried emailing support from the app, for help, but the email section would not let me see my typing or submit. I regret spending my money on this! PLEASE BILLINGS METHOD, please redo this app! I would gladly spend money on something that HELPED!!! This was ONLY an frustrating experience!
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Terrible

Terrible interface. Almost impossible to use/ understand

Useless.!

Nothing works - I can’t access the help section or send a message to ask for help. Complete waste of money.

Cheio de erros de funcionamento

Cheio de links quebrados, páginas não traduzidas para o português e informações conflitantes.

Developer apps

FAQ

What is billingsMentor® used for?

billingsMentor® is used to observe, record, and interpret fertility symptoms according to the Billings Method. It assists users in achieving or avoiding pregnancy by providing detailed fertility insights and chart generation.

How accurate is billingsMentor®?

The underlying fertility interpreter, Ovulation Mentor, is ranked the most accurate of all fertility awareness apps analyzed in a study published in the Journal of the American Board of Family Medicine.

Can billingsMentor® be used with irregular cycles?

Yes, billingsMentor® can be used even if your cycles are not regular. It is designed to help identify your Basic Infertile Pattern (BIP) regardless of cycle regularity, including during periods like breastfeeding.

What languages does billingsMentor® support?

billingsMentor® is available in English, Spanish, French, Portuguese, Russian, Chinese, and Arabic, all included within a single download.

Is billingsMentor® available on tablets?

While billingsMentor® is primarily an iPhone app, users with tablets can consider using its web interface. All data is stored on the billingsMentor® server, making your fertility chart accessible from any device with internet access.

How much does billingsMentor® cost?

billingsMentor® is a paid application, priced at $4.99. This one-time purchase grants access to all its features and multi-language support.

Does billingsMentor® have ads?

No, billingsMentor® does not contain advertisements. As a paid application, it offers an ad-free experience for users.

When was billingsMentor® last updated?

The latest version of billingsMentor® is 4.4, and it was last updated on February 3, 2026. This indicates ongoing development and support for the application.