Best Ovulation App in 2026: 8 Apps Compared
By ToolNimba Editorial Team November 9, 2026 8 min read
- Top pick
FloAll-round cycle and pregnancy tracking
Starting priceFreeCheck out FloRead our review - Runner-up
ClueScience-led tracking and privacy
Starting priceFreeCheck out ClueRead our review - Also great
Natural CyclesFDA-cleared contraception
Starting price$149.99 per yearCheck out Natural CyclesRead our review
How we researched this
We compared official pricing and feature pages, app store listings, privacy policies and public user reviews. Prices change, so check the provider's site before you pay.
Key takeaways
- Flo is our pick for most people because it pairs cycle tracking with a large content library and a useful free tier.
- Clue suits users who want science-led tracking and clearer privacy positioning, with a strong free version.
- Natural Cycles is different from the rest, because it is FDA-cleared as a contraceptive method based on temperature, not just a tracker.
- This is not medical advice, and fertility predictions are estimates. Talk to a clinician about irregular cycles, fertility concerns or contraception decisions.
Quick comparison
| Name | Best for | Starting price | Free plan | |
|---|---|---|---|---|
| Flo | All-round cycle and pregnancy tracking | Free | Yes | Visit |
| Clue | Science-led tracking and privacy | Free | Yes | Visit |
| Natural Cycles | FDA-cleared contraception | $149.99 per year | Free trial | Visit |
 Glow | Trying to conceive community | Free | Yes | Visit |
 Premom | Ovulation test strip reading | Free | Yes | Visit |
 Ovia Fertility | Free fertility tracking | Free | Yes | Visit |
 Fertility Friend | Detailed temperature charting | Free | Yes | Visit |
 Veya | Cycle plus lifestyle tracking | Free | Yes | Visit |
The best ovulation apps
The best ovulation app depends on what you want it to do. Some apps estimate your fertile window from past cycles, some read ovulation test strips, and some confirm ovulation from temperature. Those are different methods with different limits, especially for irregular cycles. The apps below cover each approach, and we note where a prediction is an estimate rather than a measurement.
Flo is the most complete all-rounder here. You can track periods, symptoms, mood and ovulation estimates, switch to pregnancy mode, and read a large library of health articles in the same app. For someone who wants one app for cycle tracking and general reproductive health content, Flo covers the most ground.
Flo Premium adds deeper insights, an AI assistant and extra pregnancy features, and its annual price varies by offer, so check the app store listing before you pay. Flo has also faced past regulatory action over data sharing, so review its current privacy settings and Anonymous Mode before entering sensitive data.
- Large content library
- Pregnancy mode
- Useful free tier for basic tracking
- Best features sit behind Premium
- Past privacy concerns mean you should read current settings
Clue takes a calmer, science-led approach to cycle tracking. Its interface is clean, symptom tracking is deep, and the free version covers core period and cycle tracking well enough for many users. Clue Plus, at $39.99 per year on app store listings, adds deeper analysis and advanced predictions.
Clue predicts your fertile window from logged history, so it is less reliable for irregular cycles than a method that measures temperature or hormone tests. If you value a straightforward tracker with a privacy-conscious reputation and no clutter, Clue is a strong default.
- Clean science-led design
- Deep symptom tracking
- Strong free version
- Predictions are estimates, not measurements
- Plus needed for deeper analysis
Natural Cycles is not just another tracker. It is an FDA-cleared contraceptive method that uses daily basal body temperature to confirm ovulation and label days as fertile or not fertile. That measurement-based approach is why it can be used for pregnancy prevention, while Flo and Clue cannot be used that way.
That distinction comes with demands. You must enter temperature daily, follow red-day guidance carefully, and pay a subscription, listed at $149.99 per year or $21.99 per month in app stores. Natural Cycles is the pick only if you specifically want its contraceptive method and are willing to follow it closely.
- FDA-cleared for contraception
- Temperature-based red and green day system
- Works with wearables
- No permanent free plan
- Requires daily temperature input
- Not a general cycle tracker first
Glow suits people who are actively trying to conceive and want community support alongside tracking. You can log ovulation tests, temperature, cervical mucus and symptoms, share data with a partner, and join forums where others are on a similar path. That community layer is Glow's main difference from quieter trackers like Clue.
The free version is ad-supported, and the interface packs in a lot of features, which can feel busy. If community and partner sharing matter to you, Glow is worth trying. If you prefer a minimal tracker, Clue or Flo will feel calmer.
- Large trying-to-conceive community
- Partner mode
- Detailed fertility logging
- Free version includes ads
- Premium needed for fuller insights
- Interface can feel busy
Premom is the best pick if you use ovulation predictor kits. Photograph a test strip and the app reads the result, plots your LH curve and helps you spot your surge without guessing at faint lines by eye. That strip-reading feature is genuinely useful for people tracking ovulation closely.
Premom is narrower than Flo or Clue for general cycle and health tracking, and you still need to buy test strips. For trying-to-conceive users who test regularly, though, its strip reader and charts make it a strong specialist choice.
- Photographs and reads ovulation test strips
- Clear LH curve charts
- Strong trying-to-conceive focus
- Best with test strips, which cost extra
- Community and design are narrower than Flo
Ovia Fertility offers free cycle and fertility tracking with a focus on conception planning. You can log periods, symptoms and fertility signs, get fertile window estimates, and move into pregnancy tracking in a related Ovia app if you conceive. For users who want a free tracker without paying for Premium, Ovia is a practical option.
Ovia's predictions are estimates from logged data, and some coaching features depend on employer programs. Check what is included in the free version for your account before you rely on a specific feature.
- Free core tracking
- Fertility and pregnancy tools in one family of apps
- Employer programs available
- Some features tie to employer programs
- Predictions are estimates
- Interface includes sponsored content
Fertility Friend is the classic choice for detailed temperature charting. It plots basal body temperature, cervical mucus and ovulation tests on clear charts, and its analysis helps you see patterns across cycles. Long-time charters trust it because it focuses on data rather than content and community extras.
The interface looks dated next to Flo and Clue, and advanced analysis sits behind a VIP subscription listed around $9.99 per month. If you chart temperature seriously and want depth over polish, Fertility Friend is still one of the best tools available.
- Detailed basal body temperature charts
- Strong analysis for chart readers
- Long track record
- Interface looks dated
- VIP needed for advanced analysis
- Learning curve for new charters
Veya is a newer option that links your cycle to lifestyle data. You can track mood, sleep, nutrition and habits alongside periods and ovulation estimates, and sync with Apple Watch and other wearables. That broader view helps if you want to see how sleep or stress lines up with cycle symptoms.
Veya's main limits are platform and maturity. The main app is iOS only, with a web app for other platforms, and its community is smaller than Flo or Glow. Premium, listed around $49.99 per year, adds full AI insights. For iPhone users who want lifestyle context with cycle tracking, Veya is a fresh alternative.
- Tracks mood, sleep, food and cycle together
- Wearable sync
- No ads on free tier in listings
- IOS only for the main app
- Newer and smaller community
- Premium needed for full AI insights
How we picked these
We compared official app pages, app store listings and current reviews, and kept only apps that are actively available and clearly track ovulation in 2026. We checked free tiers, paid prices, tracking methods and privacy notes, and we distinguished clearly between apps that estimate ovulation from history and methods that measure temperature or test results. Prices vary by store and offer, so check the listing before you subscribe.
How to choose an ovulation app
Start with your goal. If you want general cycle tracking, Flo or Clue will do. If you are trying to conceive and test regularly, Premom or Fertility Friend fits better. If you want an app-based contraceptive method, only Natural Cycles on this list holds that clearance, and it must be used exactly as directed.
Read the privacy settings first
Cycle data is sensitive. Check what data the app collects, whether it sells or shares data, whether an anonymous mode exists, and how to export or delete your history. Choose the app whose current policy you are comfortable with, not just the prettiest interface.
Give it two cycles before judging accuracy
Predictions improve as the app learns your history, and irregular cycles make early estimates less reliable. Log consistently for two cycles, then compare predictions with your actual cycle starts and any test or temperature data you collect.
Know when to talk to a clinician
Seek medical advice if cycles are consistently irregular, very painful, absent, or if you have been trying to conceive for a while without success. An app can support that conversation with exported charts and logs, but it cannot diagnose or replace care.
Sources
Frequently asked questions
What is the best free ovulation tracker app?
Flo, Clue, Ovia Fertility and Veya all offer useful free tiers for basic cycle and ovulation tracking. Clue and Flo are the safest free starting points for most users, while Ovia suits users who want a free fertility-focused tracker.
What is the best ovulation app to get pregnant?
Premom is best if you use ovulation test strips, Fertility Friend is best for detailed temperature charting, and Glow adds community and partner sharing. No app guarantees conception, and predictions are estimates, so combine app data with tests or temperature where it helps.
Can an ovulation app be used as birth control?
Only Natural Cycles on this list is FDA-cleared as a contraceptive method, and it works by temperature measurement with strict daily use. Flo, Clue and other trackers estimate fertile windows and are not cleared as birth control.
How accurate are ovulation predictions?
Accuracy depends on cycle regularity and the method used. Calendar estimates from past cycles are least reliable for irregular cycles, while temperature confirmation and hormone test strips give stronger signals. Treat every app prediction as an estimate.
Is my cycle data private in these apps?
Privacy varies by app and by your settings. Read the current privacy policy, turn on anonymous or private modes where offered, limit connected data, and check how to delete your history before you log sensitive details.