Best Nature Calendar App

96+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated July 2026

Whether you're new to nature calendar app or looking for an upgrade, our curated collection of 96+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Nature Calendar App (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Natural Cycles: Fertility AppNatural Cycles: Fertility AppFree4.8β˜… (30K)YesYesAug 2026
2Period Tracker Period CalendarPeriod Tracker Period CalendarFree4.9β˜… (173K)YesYesAug 2026
3Stardust Period TrackerStardust Period TrackerFree4.8β˜… (114K)YesYesAug 2026
4My period calendar PinkllamaMy period calendar PinkllamaFree4.8β˜… (19K)NoYesAug 2026
5Pregmate Ovulation TrackerPregmate Ovulation TrackerFree4.9β˜… (12K)NoYesAug 2026
6Lively - Period Tracker, CycleLively - Period Tracker, CycleFree4.8β˜… (48K)NoYesAug 2026
7Premom-Ovulation Tracker, PCOSPremom-Ovulation Tracker, PCOSFree4.8β˜… (59K)NoYesAug 2026
8Fertility Friend FF TrackerFertility Friend FF TrackerFree4.8β˜… (7.4K)NoYesAug 2026

Top Picks for Nature Calendar App

Natural Cycles: Fertility App#1

Natural Cycles: Fertility App by NaturalCycles Nordic AB

Ovulation Tracker・FDA-cleared
Editor's Choice
πŸ’ͺ Health & Fitness
4.8😊(30K ratings)
FreeAdsIn-App Purchases
#36in Health & Fitness
Natural Cycles: Fertility App screenshot 1
Natural Cycles: Fertility App screenshot 2
Natural Cycles: Fertility App screenshot 3
Natural Cycles: Fertility App screenshot 4
Natural Cycles: Fertility App screenshot 5
Natural Cycles: Fertility App screenshot 6

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.

What We Love

  • πŸ‘ Teaches users about their cycle
  • πŸ‘ Helps users understand their body
  • πŸ‘ Provides a natural contraceptive option
  • πŸ‘ Accurate in predicting ovulation and periods

Room to Improve

  • πŸ› Inconsistent in predicting ovulation and periods for some users
  • πŸ› Thermometer issues (loud, hard to read, no Bluetooth connectivity)
  • πŸ› Difficult to use for users with irregular cycles or disrupted sleep schedules
Period Tracker Period Calendar#2

Period Tracker Period Calendar by ABISHKKING LIMITED.

Cycle Tracker & Ovulation
Strong Contender
πŸ’ͺ Health & Fitness
4.9😊(173K ratings)
FreeAdsIn-App Purchases
#37in Health & Fitness
Period Tracker Period Calendar screenshot 1
Period Tracker Period Calendar screenshot 2
Period Tracker Period Calendar screenshot 3
Period Tracker Period Calendar screenshot 4
Period Tracker Period Calendar screenshot 5
Period Tracker Period Calendar screenshot 6

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.

What We Love

  • ⭐ Accurate period tracking
  • πŸ“† Helpful calendar and diary features
  • 🌟 Customizable themes and pets
  • πŸ” Comprehensive symptom and health tracking

Room to Improve

  • πŸ” Unclear symptom definitions
  • πŸ”” Intrusive and unskippable ads
  • πŸ”’ Concerns about data privacy and security
Stardust Period Tracker#3

Stardust Period Tracker by Stardust App LLC (New York)

Track your period & cycle
Worth Considering
πŸ’ͺ Health & Fitness
4.8😐(114K ratings)
FreeAdsIn-App Purchases
#28in Health & Fitness
Stardust Period Tracker screenshot 1
Stardust Period Tracker screenshot 2
Stardust Period Tracker screenshot 3
Stardust Period Tracker screenshot 4
Stardust Period Tracker screenshot 5
Stardust Period Tracker screenshot 6

This health app helps you understand and track your menstrual cycle, ovulation, and pregnancy. It combines scientific data with ancient wisdom and astronomy to provide personalized insights and goal manifestation tools. Features include period predictions, symptom tracking, and lunar synchronicity.

What We Love

  • πŸ’• Beautiful, aesthetically pleasing design
  • πŸŒ™ Syncs with moon cycles
  • 🌟 Cute, quirky messages and notifications
  • 🀝 Owned and run by women

Room to Improve

  • πŸ› Frequent glitches, bugs, and crashes
  • πŸ” Resets/deletes user data after updates
  • πŸ•°οΈ Inaccurate period predictions and cycle tracking

More Nature Calendar App apps to explore

4
My period calendar Pinkllama
My period calendar Pinkllama
My period calendar Pinkllama
Period tracker for teens
Free

This app helps users track their menstrual cycles, predict periods, ovulation, and fertility windows. It allows logging of symptoms and moods, offers health tips, and provides reminders for pills and upcoming cycles. Privacy is a key focus, with no sign-up required and data stored locally.

Period and cycle tracking12-month smart predictionsLog 80+ symptoms and moods
πŸ’ͺ Health & Fitness
(19K)
free with in-app purchases
5
Pregmate Ovulation Tracker
Pregmate Ovulation Tracker
Pregmate Ovulation Tracker
Period β€’ 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
πŸ’ͺ Health & Fitness
(12K)
free with in-app purchases
6
Lively - Period Tracker, Cycle
Lively - Period Tracker, Cycle
Lively - Period Tracker, Cycle
Ovulation & Pregnancy Calendar
Free

This app helps you understand and align with your body's natural cycle. It provides personalized daily tips for nutrition, exercise, and self-care based on your menstrual phase. It also supports pregnancy and postpartum journeys, and offers a unique partner syncing feature.

Personalized daily tips by cycle phaseNutrition and sports guidanceSelf-care recommendations
πŸ’ͺ Health & Fitness
(48K)
free with in-app purchases
7
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
πŸ’ͺ Health & Fitness
(59K)
free with in-app purchases
8
Fertility Friend FF Tracker
Fertility Friend FF Tracker
Fertility Friend FF Tracker
Ovulation Cycle & Fertile Days
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
πŸ’ͺ Health & Fitness
(7.4K)
freemium
9
Life - Period Tracker Calendar
Life - Period Tracker Calendar
Life - Period Tracker Calendar
My menstrual ovulation cycle
Free

Track your menstrual cycle, predict ovulation, and log symptoms, moods, and health data. Offers extensive customization and privacy protection, with optional premium features for deeper health insights and sharing.

Period trackingOvulation predictionCycle reminders
πŸ’ͺ Health & Fitness
(63K)
freemium
10
Trying to conceive Tracker app
Trying to conceive Tracker app
Trying to conceive Tracker app
Period calendar β€” 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
πŸ₯ Medical
(1.6K)
free with in-app purchases
11
Cycles: Period & Cycle Tracker
Cycles: Period & Cycle Tracker
Cycles: Period & Cycle Tracker
Fertility & Ovulation Calendar
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
πŸ’ͺ Health & Fitness
(27K)
freemium
12
Daily Bird - the beautiful bird a day calendar app
Daily Bird - the beautiful bird a day calendar app
Daily Bird - the beautiful bird a day calendar app
by Birds In The Hand, LLC
Free

Discover a new bird species daily with stunning photography and fascinating facts. Use it as a decorative desk clock or test your knowledge with daily quizzes. Share your daily bird with friends and learn about contributing to the photo collection.

Daily bird photographyInteresting bird factsBird identification tips
πŸ” Reference
(92)
free
13
Clover -Period Tracker, Cycle
Clover -Period Tracker, Cycle
Clover -Period Tracker, Cycle
Calendar for Women and Teens
Free

This app helps women and teens track their menstrual cycles, predict period dates, and log symptoms. It offers a private and secure way to manage reproductive health data directly on your device, with optional premium features for enhanced insights.

Menstrual cycle trackingOvulation calendarPeriod log and calculator
πŸ’ͺ Health & Fitness
(23K)
freemium
14
Solid Calendar
Solid Calendar
Solid Calendar
Natural Language Calendar
Free
$4.99 | 100% OFF

This app helps you manage your time, tasks, and events with a natural language interface. It acts as a digital planner, rotating schedule manager, and reminder system, syncing with your existing device calendars for seamless organization.

Add events with natural language inputCalendar planner with intuitive interfaceDigital planner for tasks and to-do lists
πŸ“Š Productivity
(115)
paid
15
Kindara: Fertility Tracker
Kindara: Fertility Tracker
Kindara: Fertility Tracker
Ovulation & fertility tracker
Free

Understand your menstrual cycle and reproductive health with science-backed tools. Track fertility signs, get data-driven predictions, and connect with a supportive community. Ideal for managing fertility, pregnancy planning, or discussing health with your doctor.

Fertility sign tracking (BBT, cervical mucus, etc.)Data-driven fertility and period predictionsCustomizable data fields
πŸ₯ Medical
(10K)
freemium
16
Sculpt You: Women's Fitness
Sculpt You: Women's Fitness
Sculpt You: Women's Fitness
Gym, Pilates, & Yoga Workouts
Free

This comprehensive health and wellness program offers structured home and gym workouts, customized meal plans, and mental health support. It aims to empower women to achieve their fitness goals and build confidence through a holistic approach to physical and mental well-being.

Structured home & gym workoutsCustomized meal plansMental health system
πŸ’ͺ Health & Fitness
(6.4K)
free with in-app purchases
17
Depth Wallpaper & Live Effect
Depth Wallpaper & Live Effect
Depth Wallpaper & Live Effect
Deep Background for Screen
Free

Discover and apply stunning live wallpapers with a captivating depth effect to refresh your device. Customize your lock screen with a wide variety of animated designs, from calming landscapes to vibrant cityscapes. New wallpapers are added weekly to keep your phone looking fresh.

Live wallpapers with depth effectAnimated designsCustomizable lock screen
🎬 Entertainment
(12K)
free with in-app purchases
18
PeakDay Fertility Tracker App
PeakDay Fertility Tracker App
PeakDay Fertility Tracker App
Period and Pregnancy Calendar
Free

This app helps track menstrual cycles and fertility signs to predict ovulation and peak fertility days. It supports natural family planning and offers community support and educational resources for enhanced fertility awareness.

Period and ovulation chartingNatural family planning supportSympto-Thermal method compatibility
πŸ’ͺ Health & Fitness
(25)
free with in-app purchases
19
Calendar Planner CircleTime
Calendar Planner CircleTime
Calendar Planner CircleTime
Understand Time as a Whole
Free

This app reimagines your schedule as a flowing circle, syncing with natural rhythms like sunrise, sunset, and moon phases. It offers a clear, clutter-free visual representation of your day, integrating with your activity data for a holistic view of time and movement.

Circular daily timeline visualizationSyncs with sun, moon, and weatherIntegrates Apple Activity Rings
πŸ“Š Productivity
(332)
free with in-app purchases
20
MeetYou - Period Tracker
MeetYou - Period Tracker
MeetYou - Period Tracker
Cycle, ovulation & pregnancy
Free

This women's health app helps you track your menstrual cycle, predict ovulation, and monitor your physiological status. It offers modes for pregnancy preparation and parenting, providing relevant knowledge and health recommendations. The more you record, the more accurate its AI-driven predictions become.

AI-powered period predictionOvulation trackingPregnancy preparation mode
πŸ’ͺ Health & Fitness
(15K)
freemium

FAQ about Nature Calendar App

What is the best nature calendar app for iPhone?
Natural Cycles: Fertility App tops our nature calendar app ranking as of July 2026, with a 4.8-star average from 30K App Store ratings, and it's free to download.
Yes β€” 20 of the top nature calendar app we rank are free to download, including Natural Cycles: Fertility App and Period Tracker Period Calendar.
Natural Cycles: Fertility App shows ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 96+ nature calendar app on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
The app uses your body temperature to track ovulation, helping you identify fertile days for preventing or planning pregnancy. It offers a hormone-free contraception method and provides insights into different stages of your reproductive health, including postpartum and perimenopause.
The app is scientifically proven to be 93% effective with typical use and 98% effective with perfect use. It's important to note that no birth control method is 100% effective, and it does not protect against STIs.