Safr - Pregnancy Prevention
Track cycle & pregnancy risk
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Track your cycle, know your daily pregnancy risk, and check pregnancy likelihood—powered by real data.
Safr is built to help you prevent pregnancy using real cycle data
Most apps rely on averages. Your body doesn’t. Safr uses the data you log to give you clear, personalized insight into your fertility and pregnancy risk.
Here’s how Safr works:
1. We use real science.
Safr is based on established research from sources like the Mayo Clinic, Cleveland Clinic, and leading reproductive health studies. Your cycle follows biological patterns, and we use that data to understand yours.
To estimate your fertility and pregnancy risk, we look at:
- Your cycle history and patterns
- Ovulation timing and biological signals
- Cervical mucus (a key fertility indicator)
- Daily symptoms and logs over time
Most apps assume a fixed cycle length. Safr adapts to your body. The more consistently you log, the more accurate your predictions become.
2. Know your pregnancy risk every day.
Safr gives you daily fertility probabilities and clear risk levels so you always know where you stand. By combining your cycle data with real-life inputs like sex and protection, Safr reflects your actual risk at any moment.
3. We also offer a smarter way to check pregnancy likelihood.
Safr’s virtual pregnancy test uses your cycle timing, activity logs, and known biological patterns to estimate your chances of being pregnant. Our algorithm combines these inputs to generate a structured, data-driven likelihood.
Safr offers premium features through subscriptions and in-app purchases, including fertility insights, pregnancy likelihood calculations, cervical mucus analysis tools, and more personalized predictions.
Disclaimer: Safr does not provide medical advice. All insights are based on established scientific research and fertility awareness methods. Always consult a healthcare provider for medical guidance.
The developer, Olivia Liu, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Purchases
- Contact Info
- User Content
- Identifiers
- Sensitive Info
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Health & Fitness
- Contact Info
- User Content
- Sensitive Info
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Olivia Liu
- Size
- 35.3 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
16+
- 16+
- Frequent
Medical Treatment information
Contains
Health or Wellness Topics
- Copyright
- © 2026 Olivia Liu