Best 7 Ovulation Trackers in 2026: Compare Apps Side by Side

Introduction

Flo Cycle & Period Tracker for iOS is the best overall ovulation tracker in this roundup, combining cycle-based predictions with fertility and pregnancy features. The other six options cover a range of needs, from basic cycle tracking to ovulation-test scanning and logging fertility signs. Keep in mind that app predictions are estimates, not confirmation of ovulation.

Quick comparison

Flo’s iOS and Android listings are versions of the same app, not separate products. Premom’s listings include ovulation-test scanning and basal body temperature charts. Fertility & Period Tracker lets you log basal body temperature and other signs. The table reflects listed features, not how accurately each app predicts ovulation.

1. Flo Cycle & Period Tracker

Best for: People who want cycle predictions alongside fertility and pregnancy features on iPhone.

Flo Cycle & Period Tracker tracks periods and uses the cycle information you enter to estimate ovulation and fertile windows. It also has fertility and pregnancy features, which may come in handy if your needs change. Predictions are based on the cycle details you record.

2. Flo Ovulation & Period Tracker

Best for: Android users looking for cycle tracking with fertility and pregnancy tools.

Flo Ovulation & Period Tracker tracks periods and cycles, predicts ovulation, and offers fertility insights. Pregnancy tracking is included too, but it does not confirm a pregnancy. The app brings ovulation predictions and pregnancy tracking together in one place.

3. Clue Period & Cycle Tracker

Best for: iPhone users who want cycle predictions and personalized insights in one tracker.

Clue Period & Cycle Tracker tracks periods, fertility, and ovulation, and uses the information you enter to make cycle predictions. It also offers personalized cycle insights. These can help you review your tracking, though they are not a guarantee of medical accuracy.

4. Premom-Ovulation Tracker, PCOS

Best for: iPhone users who want to pair cycle tracking with ovulation-test results.

Premom-Ovulation Tracker, PCOS tracks cycles and predicts ovulation and fertile windows. You can scan ovulation tests and chart basal body temperature to keep those signs alongside your cycle information. Test scanning is a useful distinction: it lets you add results to your tracking routine.

5. Ovulation Tracker App - Premom

Best for: Android users who want test scanning and temperature charting alongside period tracking.

Ovulation Tracker App - Premom tracks periods and fertility, and supports ovulation-test scanning. You can also chart basal body temperature as another sign related to the fertile window. With both test scans and temperature charts, it suits people who want to track more than period dates.

6. Fertility & Period Tracker •

Best for: iPhone users who want to record several fertility signs, not just cycle dates.

Fertility & Period Tracker • lets you track cervical fluid, basal body temperature, and cervical position. It also provides ovulation and fertile-window predictions, along with cycle charts. One notable feature is the range of signs you can log, including cervical position.

7. Ovia Cycle & Pregnancy Tracker

Best for: Android users trying to conceive who want cycle and fertility tracking.

Ovia Cycle & Pregnancy Tracker tracks periods and cycles and offers ovulation predictions. Its fertility features are geared toward people trying to conceive, so you can use it to bring cycle information into conception planning. Its predictions are estimates, not confirmation of ovulation.

How we picked these apps

We focused on apps whose listings specifically mention ovulation or fertile-window tracking. That includes a few different approaches: cycle-based predictions, fertility-sign logging, and ovulation-test scanning.

We included iPhone and Android options when listings were available. The comparison covers features stated in those listings, rather than unverified claims about prediction accuracy. Results may depend on the information you enter, and app estimates do not replace medical advice or confirm ovulation.

Frequently asked questions

How accurate are ovulation tracker apps?

An app’s ovulation prediction is an estimate, and actual timing can vary. Forecasts rely on the information you log, so incomplete records or irregular cycles may make them less useful. A healthcare professional can give you personalized guidance.

Can an app confirm ovulation?

No. Predicting ovulation and confirming it are different things. Some apps let you record signs such as basal body temperature or ovulation-test results. Follow test instructions, and seek clinical guidance if needed.

Which features matter when choosing an ovulation tracker?

Period and cycle logging may be enough for general cycle awareness. If you’re trying to conceive, test scanning and fertility-sign charts give you more ways to record information. Choose features that fit your goal, and check that the app works on your phone.

The verdict

Flo Cycle & Period Tracker for iOS combines cycle-based ovulation and fertile-window predictions with fertility and pregnancy features. Premom for iOS or Android adds ovulation-test scanning and basal body temperature charting, while Clue is another iPhone option with personalized cycle insights. Whichever app you use, treat its predictions as estimates, not medical confirmation.