Best Fertility Tracking Apps
In-depth reviews of the top apps to help you conceive.
Quick Recommendations
- Best Overall: Fertility Friend — Gold standard for serious trackers
- Best for OPK Users: Premom — Scans and interprets OPK photos
- Best Free Option: Clue — Clean design, science-based
- Best for Beginners: Flo — User-friendly with educational content
What to Look for in a Fertility App
Not all period trackers are created equal—especially when you're trying to conceive. Here's what matters:
- Accurate ovulation prediction: The app should use multiple data points, not just cycle length
- BBT charting: Temperature tracking with clear chart visualization
- OPK logging: Ability to record ovulation test results (bonus: photo interpretation)
- Cervical mucus tracking: Options to log CM quality
- Data privacy: How is your sensitive health data stored and used?
- Algorithm transparency: Does it explain how predictions are made?
📊 Why Multiple Data Points Matter
Apps that predict ovulation based only on past cycle length can be off by several days. Apps that incorporate BBT, OPKs, and CM provide much more accurate fertile window predictions.
App Reviews
Fertility Friend
The OG of fertility tracking, Fertility Friend has been around since 1998 and has helped millions conceive. It's not the prettiest app, but it's incredibly powerful.
Key Features:
- Advanced BBT charting with detailed analysis
- Proprietary algorithm that gets smarter over time
- Ovulation detection using multiple symptoms
- Extensive educational content
- Chart sharing for community feedback
- Pregnancy monitoring after BFP
✅ Pros
- Most accurate algorithm
- Extremely detailed tracking
- Great educational resources
- Active community
- Free version is robust
❌ Cons
- Dated interface
- Steep learning curve
- Can feel overwhelming
- No OPK photo scanning
Best for: Serious trackers who want detailed data analysis and don't mind a learning curve.
Premom
Premom's killer feature is its ability to scan and interpret OPK photos, taking the guesswork out of reading test lines. Made by Easy@Home, it syncs seamlessly with their test strips.
Key Features:
- OPK photo scanner with T/C ratio analysis
- BBT syncing with Easy@Home thermometer
- Clean, modern interface
- Period and symptom tracking
- Ovulation prediction based on multiple factors
- Community features
✅ Pros
- OPK scanning is game-changing
- Modern, intuitive design
- Easy@Home device integration
- Good free version
❌ Cons
- Privacy concerns (data sharing)
- Photo scanning not always accurate
- Algorithm less sophisticated than FF
- Premium needed for best features
Best for: Anyone using OPK strips who wants help interpreting results.
Clue
Clue stands out for its clean, gender-neutral design and commitment to scientific accuracy. It's also one of the more privacy-conscious options.
Key Features:
- Clean, modern interface
- Science-backed algorithm
- 30+ tracking categories
- Strong privacy practices (GDPR compliant)
- Educational articles and cycle insights
- No pink flowers or baby dust—just data
✅ Pros
- Beautiful, minimal design
- Strong privacy policy
- Gender-inclusive language
- Science-focused approach
- Free version is comprehensive
❌ Cons
- Less TTC-specific features
- No BBT charting
- Limited OPK tracking
- Premium needed for predictions
Best for: Those who want a clean, private tracker without fertility-specific obsession.
Flo
Flo is the most popular period tracking app with over 200 million users. It's user-friendly with extensive educational content, making it great for beginners.
Key Features:
- AI-powered predictions
- Health assistant chatbot
- Extensive daily articles and tips
- Symptom and mood tracking
- Secret chats community
- Pregnancy mode after conception
✅ Pros
- Very user-friendly
- Great educational content
- Active community
- Beautiful design
- Helpful reminders
❌ Cons
- Past privacy concerns (FTC settlement)
- Predictions not always accurate
- Limited BBT charting
- Lots of upselling for premium
Best for: Beginners who want education alongside tracking.
Kindara
Kindara is built around the Fertility Awareness Method with excellent BBT charting. Integrates with their Wink thermometer for automatic syncing.
Key Features:
- Beautiful BBT charts
- Wink thermometer integration
- FAM-focused approach
- Community and forum
- Good educational content
✅ Pros
- Great charting interface
- FAM-focused education
- Wink thermometer syncing
- Privacy-conscious
❌ Cons
- Wink thermometer expensive
- Smaller community
- No OPK photo scanning
- Premium required for best features
Best for: Those committed to the Fertility Awareness Method and BBT tracking.
Quick Comparison
| App | BBT Charts | OPK Scanning | Free Version | Privacy |
|---|---|---|---|---|
| Fertility Friend | ⭐⭐⭐⭐⭐ | Manual only | Excellent | Good |
| Premom | ⭐⭐⭐⭐ | ✅ Best | Good | Concerns |
| Clue | None | None | Excellent | ⭐⭐⭐⭐⭐ |
| Flo | ⭐⭐⭐ | Manual only | Good | Improved |
| Kindara | ⭐⭐⭐⭐⭐ | None | Limited | Good |
A Note on Privacy
Fertility apps collect extremely sensitive data. Before choosing an app, consider:
- Where is data stored? (Local vs. cloud)
- Is data shared with third parties? (Advertisers, employers, insurers)
- Can you delete your data?
- What jurisdiction applies? (GDPR for EU-based companies offers better protection)
💡 Privacy Tips
• Read the privacy policy (yes, really)
• Consider using a fertility-only email address
• Disable unnecessary data sharing in settings
• Clue and Kindara are generally considered the most privacy-conscious
Our Recommendation
For most TTC users, we recommend Fertility Friend for serious tracking and Premom if you're using OPK strips regularly. If privacy is your top concern, go with Clue.
The best app is the one you'll actually use consistently. Try a few and see which interface clicks for you—many have robust free versions so you can test before committing. 💚