Best Ovulation Calculator App

202+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated July 2026

From beginner-friendly picks to power-user tools, our ovulation calculator app list covers 202+ iPhone apps updated through July 2026. Compare ratings, prices, and screenshots in one place.

Compare top Ovulation Calculator App (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Ovulation Calculator AppOvulation Calculator AppFree5.0★ (1)NoNoMay 2026
2Flo Cycle & Period TrackerFlo Cycle & Period TrackerFree4.7★ (1.9M)NoYesAug 2026
3Ovulation & Fertility TrackerOvulation & Fertility TrackerFree4.5★ (2.7K)NoYesAug 2026
4Glow Ovulation & Period AppGlow Ovulation & Period AppFree4.7★ (74K)YesYesAug 2026
5Clue Period & Cycle TrackerClue Period & Cycle TrackerFree4.8★ (400K)NoYesAug 2026
6Period Tracker Period CalendarPeriod Tracker Period CalendarFree4.9★ (172K)YesYesAug 2026
7Natural Cycles Fertility AppNatural Cycles Fertility AppFree4.8★ (30K)YesYesAug 2026
8Period Tracker and CalendarPeriod Tracker and CalendarFree4.8★ (53K)YesYesAug 2026

Top Picks for Ovulation Calculator App

Ovulation Calculator App#1

Ovulation Calculator App by ViralMD

Editor's Choice
🏥 Medical
5.0(1 ratings)
Free
Ovulation Calculator App screenshot 1
Ovulation Calculator App screenshot 2

This fertility companion helps women track their cycles to understand their fertile window. Input your last period date and cycle length to calculate ovulation and identify optimal times for conception or avoidance.

Flo Cycle & Period Tracker#2

Flo Cycle & Period Tracker by FLO HEALTH UK LIMITED

Ovulation & Pregnancy Calendar
Strong Contender
💪 Health & Fitness
4.7😐(1.9M ratings)
FreeIn-App Purchases
#4in Health & Fitness
Flo Cycle & Period Tracker screenshot 1
Flo Cycle & Period Tracker screenshot 2
Flo Cycle & Period Tracker screenshot 3
Flo Cycle & Period Tracker screenshot 4
Flo Cycle & Period Tracker screenshot 5
Flo Cycle & Period Tracker screenshot 6

This app helps women track their menstrual cycles, ovulation, and fertility. It offers personalized insights, pregnancy support, and tools for managing perimenopause symptoms, with a focus on data privacy and security.

What We Love

  • 🚀 Accurate period predictions
  • 📊 Helpful insights and information
  • 🤝 Supportive community
  • 🗓️ Useful tracking features

Room to Improve

  • 💰 Excessive push for premium subscription
  • 🔒 Privacy concerns around data sharing
  • 🤖 Lack of inclusivity for non-binary users
Ovulation & Fertility Tracker#3

Ovulation & Fertility Tracker by KHANDAKER RAHMAN

Track Menstrual Period & Cycle
Worth Considering
💪 Health & Fitness
4.5😞(2.7K ratings)
FreeIn-App Purchases
Ovulation & Fertility Tracker screenshot 1
Ovulation & Fertility Tracker screenshot 2
Ovulation & Fertility Tracker screenshot 3
Ovulation & Fertility Tracker screenshot 4
Ovulation & Fertility Tracker screenshot 5
Ovulation & Fertility Tracker screenshot 6

This app helps users track their menstrual cycles, predict ovulation dates, and identify fertile windows to increase chances of conception. It offers a user-friendly interface to input cycle details and provides reminders for periods and ovulation.

What We Love

  • 👍 Good
  • 👍 Prefect
  • 👍 Nice
  • 👍 Extremely personal and gives a sense of happiness

Room to Improve

  • 🐛 Very annoying app
  • 💸 Overly expensive subscription
  • 🔍 Selling user data

More Ovulation Calculator App apps to explore

4
Glow Ovulation & Period App
Glow Ovulation & Period App
Glow Ovulation & Period App
FDA Listed Fertility Tracker
Free

Track your menstrual cycle, ovulation, and fertility signs with personalized insights. Improve your chances of getting pregnant and better understand your body. Connect with a supportive community for advice and shared experiences.

Menstrual cycle trackingOvulation predictionFertility sign tracking
💪 Health & Fitness
(74K)
freemium
5
Clue Period & Cycle Tracker
Clue Period & Cycle Tracker
Clue Period & Cycle Tracker
Ovulation & Fertility Calendar
Free

This app helps women and people with cycles understand their bodies through period tracking, fertility predictions, and health insights. It offers personalized forecasts, tracks over 100 experiences, and provides science-based content. Connect wearables for advanced health analysis.

Personalized period predictionsTrack 100+ cycle-related experiencesFertility and ovulation calculator
💪 Health & Fitness
(400K)
free with in-app purchases
6
Period Tracker Period Calendar
Period Tracker Period Calendar
Period Tracker Period Calendar
Cycle Tracker & Ovulation
Free

This app helps women track their menstrual cycles, ovulation, and fertility. It offers personalized advice, pregnancy tracking, and reminders for birth control and medication. Your data is kept private and stored locally on your device.

Period and ovulation predictionFertility trackingPregnancy mode with week-by-week growth
💪 Health & Fitness
(172K)
free with in-app purchases
7
Natural Cycles Fertility App
Natural Cycles Fertility App
Natural Cycles Fertility App
Decode your hormonal health
Free

This app helps women track their hormonal health and fertility using body temperature data. It offers hormone-free contraception, pregnancy planning, and insights into various cycle stages. It adapts to individual cycles, even irregular ones, providing daily fertility status.

Hormone-free contraceptionOvulation tracking via temperaturePersonalized cycle adaptation
💪 Health & Fitness
(30K)
subscription
8
Period Tracker and Calendar
Period Tracker and Calendar
Period Tracker and Calendar
Track your Cycle & Ovulation
Free

This app helps users track their menstrual cycle, including ovulation, fertility, and periods. It offers discreet reminders, detailed symptom logging, and personalized insights for better health management and planning. The app also includes features for birth control pill reminders and perimenopause tracking.

Track periods, ovulation, and fertilityLog symptoms, moods, and flowBirth control pill reminders
💪 Health & Fitness
(53K)
free with in-app purchases
9
Ovulation Calculator Fertile Tracker & Calendar OC
Ovulation Calculator Fertile Tracker & Calendar OC
Ovulation Calculator Fertile Tracker & Calendar OC
by Ovulation Calculator Pty Ltd
Free

This app helps users identify their most fertile days to increase the chances of conception. It analyzes personal cycle data, offers fertility knowledge, and provides access to a supportive community.

Cycle Data Analysis PredictionsOvulation CalculatorFertile Window Viewer
🏥 Medical
(5.9K)
free
10
Glow Eve Period Tracker
Glow Eve Period Tracker
Glow Eve Period Tracker
Ovulation & Flow App
Free

This app helps women track their menstrual cycles, predict periods and ovulation, and log moods and symptoms. It offers insights into health trends and a supportive community for discussing sexual health.

Period and ovulation predictionMood and symptom loggingHealth data visualization
💪 Health & Fitness
(114K)
freemium
11
Premom-Ovulation Tracker, PCOS
Premom-Ovulation Tracker, PCOS
Premom-Ovulation Tracker, PCOS
Fertility, Period & Pregnancy
Free

This app helps women track their menstrual cycles, predict ovulation, and monitor fertility to increase chances of conception. It offers personalized insights, expert guidance, and tools like BBT charting and ovulation test scanning. Users can also track pregnancy progress and connect with a supportive community.

Ovulation test scanning and LH level quantificationAutomatic BBT thermometer syncing and chartingPeriod and cycle logging with symptom tracking
💪 Health & Fitness
(58K)
free with in-app purchases
12
Period & Ovulation Calculator
Period & Ovulation Calculator
Period & Ovulation Calculator
Fertility Tracker & Calendar
Free

This app helps users track their menstrual cycles, predict ovulation dates, and identify fertile windows. It also assists in calculating pregnancy test dates and expected labor dates, offering a comprehensive tool for family planning and fertility awareness.

Track period datesPredict ovulation datesIdentify fertile days
💪 Health & Fitness
(609)
free with in-app purchases
13
Ovia Cycle & Pregnancy Tracker
Ovia Cycle & Pregnancy Tracker
Ovia Cycle & Pregnancy Tracker
Fertility, Ovulation, & Period
Free

Track your menstrual cycle, fertility, pregnancy, postpartum recovery, and menopause with personalized insights and expert articles. This app offers tools for ovulation prediction, baby growth tracking, and symptom management.

Period & Fertility calendarPregnancy tracker with baby growthPostpartum recovery modes
🏥 Medical
(90K)
free with in-app purchases
14
Femometer Fertility Tracker
Femometer Fertility Tracker
Femometer Fertility Tracker
Ovulation & Period Calendar
Free

This app helps women track their menstrual cycles, predict ovulation, and monitor fertility. It records period dates, symptoms, and test results to provide personalized insights and increase conception rates. It also supports users throughout pregnancy with tracking and educational resources.

Period and PMS trackingOvulation and fertile window predictionBasal Body Temperature (BBT) charting
💪 Health & Fitness
(70K)
free with in-app purchases
15
Period Tracker - Menstrual & Ovulation Calendar
Period Tracker - Menstrual & Ovulation Calendar
Period Tracker - Menstrual & Ovulation Calendar
by BHI Technologies, Inc.
Free

This app helps users track their menstrual cycles, predict fertile and ovulation days, and log symptoms and moods. It offers smart cycle calculations and a pregnancy mode to assist with conception or avoidance. Features include passcode protection, data backup, and elegant design.

Track and predict period, fertile, and ovulation daysLog symptoms and moodsPregnancy mode
💪 Health & Fitness
(269)
free with in-app purchases
16
MyDays X
MyDays X
MyDays X
Period & Ovulation Calendar
Free

This app helps women track their menstrual cycles, predict fertile days, and monitor various health symptoms. It offers intelligent notifications, a community chat, and detailed tracking options for a comprehensive overview of reproductive health.

Period and ovulation predictionFertile day trackingSymptom and mood logging
🌟 Lifestyle
(752)
free with in-app purchases
17
MyFlo® Period Tracker Calendar
MyFlo® Period Tracker Calendar
MyFlo® Period Tracker Calendar
Cycle Syncing® & Ovulation
Free

This app helps women understand and optimize their hormonal health by tracking menstrual cycles, predicting ovulation, and offering personalized guidance for diet, exercise, and mood. It supports natural symptom management for various conditions and empowers users to sync their lives with their cycle phases.

Period and ovulation trackingCycle syncing plannerPersonalized health guidance
💪 Health & Fitness
(14K)
subscription
18
My Cycle ؜
My Cycle ؜
My Cycle ؜
Ovulation & Period Tracker
Free

Easily track your menstrual cycles and ovulation dates. Get timely reminders for your next period and identify your most fertile days for conception. This app also serves as a personal journal to log symptoms, mood changes, and other important events.

Period trackingOvulation predictionFertility window identification
💪 Health & Fitness
(92K)
free
19
Trying to conceive Tracker app
Trying to conceive Tracker app
Trying to conceive Tracker app
Period calendar — Get pregnant
Free

This app helps users track their menstrual cycle, ovulation, and related symptoms. It provides data-driven predictions to assist those trying to conceive.

Ovulation calculator and calendarCustomizable period and health trackerSymptom and mood tracking
🏥 Medical
(1.6K)
free with in-app purchases
20
Pregmate Ovulation Tracker
Pregmate Ovulation Tracker
Pregmate Ovulation Tracker
Period • Fertility Test Reader
Free

Easily track ovulation, predict fertile days, and understand your cycle. Scan test strips with your phone's camera for automatic analysis. Get personalized insights and reminders to maximize your chances of conception.

Accurate ovulation predictionsTest strip reader with auto-detectionPersonalized fertility window tracking
💪 Health & Fitness
(12K)
free with in-app purchases

FAQ about Ovulation Calculator App

What is the best ovulation calculator app for iPhone?
Ovulation Calculator App tops our ovulation calculator app ranking as of July 2026, with a 5.0-star average from 1 App Store ratings, and it's free to download.
Yes — 20 of the top ovulation calculator app we rank are free to download, including Ovulation Calculator App and Flo Cycle & Period Tracker.
Ovulation Calculator App has no ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 202+ ovulation calculator app on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
To use Ovulation Calculator, simply input the date of your last period and the length of your cycle into the designated fields. Press the calculate button, and the app will provide your fertility window.
Ovulation Calculator requires two key pieces of information: the date of your last menstrual period and the typical length of your menstrual cycle. This data is used to perform the calculations.