Best 6 Fertility Trackers in 2026: Feature-by-Feature Comparison

Introduction

Natural Cycles is the best overall fertility tracker here. It's built around temperature-based fertility awareness, not calendar guesses alone. This list covers six apps across iOS and Android, from simple period-and-ovulation trackers to charting tools. Picks are based on verified store listings and official sites, not hands-on testing.

Quick comparison table

Ovulation & Period Tracker, Ovia, Clue, and Flo lean on predictions. Natural Cycles uses a temperature-based method, and Fertility Friend centers on charting signs. Details come from listings and official sites, so check pricing and features before you download.

1. Ovulation & Period Tracker

Best for: Android users who want a simple ovulation calculator and daily fertility forecasts.

Ovulation & Period Tracker offers ovulation and fertility window predictions, period tracking, and reminders. There's also a built-in ovulation calculator.

The standout is the test result reader, which helps you interpret ovulation test results inside the app.

We only verified its Google Play listing, and it's Android-only.

2. Ovia Cycle & Pregnancy Tracker

Best for: Android users who want one app that carries over from cycle tracking to pregnancy.

The listing for Ovia Cycle & Pregnancy Tracker covers cycle, fertility, and pregnancy tracking.

Its standout feature is cycle-to-pregnancy tracking in a single app. If you conceive, you don't need to switch tools.

We only verified the Google Play listing, so we won't claim anything beyond it.

3. Fertility Friend Ovulation App

Best for: People who want to chart ovulation and fertility signs themselves.

Fertility Friend Ovulation App is made for charting ovulation and fertility signs. That sign-based charting is its standout feature.

It suits people comfortable with a hands-on approach. If you want a purely automatic forecast, look elsewhere on this list.

We only verified the Google Play listing, and it's Android-only.

4. Flo Period & Pregnancy Tracker

Best for: People who want period, ovulation, and pregnancy tracking on either iOS or Android.

Flo Period & Pregnancy Tracker covers period, ovulation, and pregnancy tracking in one place.

Its standout feature is that broad coverage across life stages, on both iPhone and Android.

Check the official site for current features and pricing before you commit.

5. Clue Period & Cycle Tracker

Best for: iOS or Android users who want straightforward cycle tracking with period and ovulation predictions.

Clue Period & Cycle Tracker is a cycle-tracking app, and its standout feature is those cycle-focused predictions.

Compared with Flo, Clue's listing centers on cycle tracking rather than pregnancy. That makes it the leaner choice if you don't need pregnancy tracking.

6. Natural Cycles

Best for: People who want a temperature-based method for planning or avoiding pregnancy.

Natural Cycles is a temperature-based fertility awareness app for iOS and Android. Its standout feature is that you can use it either to plan or to avoid pregnancy.

Read the official site to see how the method works. For medical or contraception questions, talk to a doctor.

Frequently asked questions

What does a fertility tracker do?

It logs cycle data, such as period dates, symptoms, tests, or temperature, to estimate your fertile window. Some apps predict from past cycles. Others use daily body signals.

Is a free app enough to conceive?

It can be enough for basic tracking. Check each listing to see which features cost extra.

Do apps replace a doctor?

No. If you've had trouble conceiving for a prolonged time, see a doctor. On platforms, Ovulation & Period Tracker, Ovia, and Fertility Friend are Android-only. Flo, Clue, and Natural Cycles cover iOS and Android.

The verdict

Natural Cycles is the strongest overall pick. Its temperature-based method goes beyond calendar predictions, and it works on both platforms. Flo is the runner-up for broad tracking on iOS and Android. Fertility Friend is a second runner-up for Android users who like detailed charting.

This verdict rests on verified listings and official sites, not hands-on testing.