Best Free Ovulation Calculator Apps

212+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated May 2026

With an average user rating of 4.7★, the free ovulation calculator category is one of the App Store's strongest. Browse all 212+ apps we track, sorted so the most loved ones surface first.

Compare top Free Ovulation Calculator Apps (May 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1My Cycle ؜My Cycle ؜Free4.8★ (72K)NoNoJul 2026
2Ovulation Calculator Fertile Tracker & Calendar OCOvulation Calculator Fertile Tracker & Calendar OCFree4.6★ (5.9K)NoNoJul 2026
3Premom-Ovulation Tracker, PCOSPremom-Ovulation Tracker, PCOSFree4.8★ (57K)YesYesJul 2026
4Glow Ovulation & Period AppGlow Ovulation & Period AppFree4.7★ (74K)YesYesJul 2026
5Flo Cycle & Period TrackerFlo Cycle & Period TrackerFree4.7★ (1.9M)YesYesJul 2026
6Pregmate Ovulation TrackerPregmate Ovulation TrackerFree4.9★ (12K)NoYesJul 2026
7Clue Period & Cycle TrackerClue Period & Cycle TrackerFree4.8★ (399K)YesYesJul 2026
8Ovia Cycle & Pregnancy TrackerOvia Cycle & Pregnancy TrackerFree4.8★ (89K)YesNoJul 2026

Top Picks for Free Ovulation Calculator

My Cycle ؜#1

My Cycle ؜ by Aleksei Neiman

Ovulation & Period Tracker
Editor's Choice
💪 Health & Fitness
4.8😊(72K ratings)
Free
My Cycle ؜ screenshot 1
My Cycle ؜ screenshot 2
My Cycle ؜ screenshot 3
My Cycle ؜ screenshot 4

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.

What We Love

  • 👍 Easy to use
  • 🚀 Accurate period predictions
  • 💕 Helpful for tracking cycles
  • 🆓 Completely free app

Room to Improve

  • 🐛 Occasional glitches or data loss
  • 🔍 Limited customization options
  • ⚠️ Inaccurate predictions for some users
4.6😊(5.9K ratings)
Free
Ovulation Calculator Fertile Tracker & Calendar OC screenshot 1
Ovulation Calculator Fertile Tracker & Calendar OC screenshot 2
Ovulation Calculator Fertile Tracker & Calendar OC screenshot 3
Ovulation Calculator Fertile Tracker & Calendar OC screenshot 4
Ovulation Calculator Fertile Tracker & Calendar OC screenshot 5

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.

What We Love

  • 🚀 Accurate predictions
  • 👍 Easy to use
  • 💡 Helpful information and tips
  • 🚀 Reliable tracking

Room to Improve

  • 🐛 Crashes/glitches
  • 🐛 Inaccurate predictions
  • 🐛 Issues logging data
Premom-Ovulation Tracker, PCOS#3

Premom-Ovulation Tracker, PCOS by Easy Healthcare Corporation

Period, Fertility & Pregnancy
Worth Considering
💪 Health & Fitness
4.8😊(57K ratings)
FreeAdsIn-App Purchases
#75in Health & Fitness
Premom-Ovulation Tracker, PCOS screenshot 1
Premom-Ovulation Tracker, PCOS screenshot 2
Premom-Ovulation Tracker, PCOS screenshot 3
Premom-Ovulation Tracker, PCOS screenshot 4
Premom-Ovulation Tracker, PCOS screenshot 5
Premom-Ovulation Tracker, PCOS screenshot 6

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.

What We Love

  • 🚀 Accurate ovulation tracking
  • 👍 Easy to use app
  • 💡 Helpful community support
  • 🚀 Affordable ovulation tests

Room to Improve

  • 🐛 Inconsistent data tracking
  • 🐛 Frequent app crashes
  • 🐛 Inaccurate ovulation predictions

More Free Ovulation Calculator 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
Flo Cycle & Period Tracker
Flo Cycle & Period Tracker
Flo Cycle & Period Tracker
Ovulation & Pregnancy Calendar
Free

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.

Period and ovulation trackingFertility and pregnancy supportSymptom and mood logging
💪 Health & Fitness
(1.9M)
free with in-app purchases
6
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
7
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
(399K)
free with in-app purchases
8
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
(89K)
free with in-app purchases
9
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
(29K)
subscription
10
Period Tracker by GP Apps
Period Tracker by GP Apps
Period Tracker by GP Apps
Women’s Health Diary
Free

Easily track your menstrual cycles, predict future periods, and monitor fertility. Log symptoms, moods, and weight with detailed charts and customizable notes. Includes advanced modes for trying to conceive and pregnancy tracking, with privacy features and data backup.

Period cycle tracking and predictionFertility and ovulation trackingSymptom and mood logging
💪 Health & Fitness
(74K)
freemium
11
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
12
Ovulation & Fertility Tracker
Ovulation & Fertility Tracker
Ovulation & Fertility Tracker
Track Menstrual Period & Cycle
Free

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.

Ovulation calendarFertility predictionPeriod and ovulation reminders
💪 Health & Fitness
(2.7K)
subscription
13
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
(480)
free with in-app purchases
14
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
15
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
16
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
(171K)
free with in-app purchases
17
Cycle Tracker & Period: Cycles
Cycle Tracker & Period: Cycles
Cycle Tracker & Period: Cycles
Fertility & Ovulation App
Free

Track your menstrual cycle, fertility, and ovulation with ease. Log observations, predict fertile days, and manage irregular periods. Offers partner connection and detailed insights for better reproductive health management.

Cycle tracking at a glanceLog body and mood observationsFertile day predictions
💪 Health & Fitness
(26K)
freemium
18
Fertility Friend FF Tracker
Fertility Friend FF Tracker
Fertility Friend FF Tracker
Período Fértil e Ciclo
Free

This app helps women track their ovulation and fertile days with advanced charting tools. It provides personalized insights into your cycle, helping you understand your fertility signs and maximize your chances of conception. Millions of women trust it for accurate cycle analysis and pregnancy tracking.

Ovulation detectionFertile window predictionBBT and cervical fluid tracking
💪 Health & Fitness
(7.3K)
freemium
19
Ovulation: Period Calculator
Ovulation: Period Calculator
Ovulation: Period Calculator
Fertility & Pregnancy Calendar
Free
💪 Health & Fitness
(0)
20
Ovulation calculator (cycle)
Ovulation calculator (cycle)
Ovulation calculator (cycle)
( menstrual cycle )
Free

This app helps users track their menstrual cycle to predict ovulation and fertile days. By inputting the start and end dates of the last period, users can estimate their ovulation day and potential pregnancy window.

Menstrual cycle trackingOvulation day calculationFertile window prediction
🏥 Medical
(2)
ad-supported

FAQ about Free Ovulation Calculator

What are the best free ovulation calculator apps for iPhone?
My Cycle ؜ tops our free ovulation calculator apps ranking as of May 2026, with a 4.8-star average from 72K App Store ratings, and it's free to download.
My Cycle ؜ has no ads and has no in-app purchases, according to its App Store listing as of May 2026.
We track 212+ free ovulation calculator apps on the iOS App Store as of May 2026, ranked by rating, recency, and analysis of real user reviews.
My Cycle is an application designed to help you monitor your menstrual cycles. It provides reminders for the start of your next period and identifies your most fertile days if you are trying to conceive. The app also functions as a personal journal for logging symptoms and mood changes.
Key features include accurate period tracking, ovulation prediction, and identification of fertility windows. Users can receive timely reminders for upcoming periods and utilize the app as a personal journal to record menses, symptoms, mood changes, and other relevant events.