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)YesYesSep 2026
2Period Tracker Period CalendarPeriod Tracker Period CalendarFree4.9β˜… (173K)YesYesSep 2026
3Stardust Period TrackerStardust Period TrackerFree4.8β˜… (116K)YesYesSep 2026
4My period calendar PinkllamaMy period calendar PinkllamaFree4.8β˜… (19K)NoYesSep 2026
5Pregmate Ovulation TrackerPregmate Ovulation TrackerFree4.9β˜… (12K)NoYesSep 2026
6Lively - Period Tracker, CycleLively - Period Tracker, CycleFree4.8β˜… (51K)NoYesSep 2026
7Premom-Ovulation Tracker, PCOSPremom-Ovulation Tracker, PCOSFree4.8β˜… (59K)NoYesSep 2026
8Fertility Friend FF TrackerFertility Friend FF TrackerFree4.8β˜… (7.4K)NoYesSep 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
#31in 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
  • πŸ‘ Empowers users to take control of their fertility
  • πŸ‘ Improves mood and reduces side effects compared to hormonal birth control
  • πŸ‘ Useful for both preventing and planning pregnancy
  • πŸ‘ Detailed data and insights about user's cycle

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
  • πŸ› Lack of customer support responsiveness
  • πŸ› Automatic subscription renewal issues and no refunds
  • πŸ› Algorithm not always accurate, leading to unintended pregnancies
  • πŸ› Cluttered and unintuitive app interface
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
#41in 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
  • πŸ—“οΈ Reliable period and ovulation predictions
  • πŸ’» Seamless cross-device sync and backup
  • 🧠 Useful educational content and tips
  • 🀰 Pregnancy and fertility tracking

Room to Improve

  • πŸ” Unclear symptom definitions
  • πŸ”” Intrusive and unskippable ads
  • πŸ”’ Concerns about data privacy and security
  • πŸ”’ Inaccurate period and ovulation predictions
  • πŸ”€ Difficulty in adjusting past cycle data
  • πŸ” Limited customization options
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😐(116K ratings)
FreeAdsIn-App Purchases
#34in 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
  • πŸ”’ Protects user privacy and data
  • 🧠 Provides insights into hormones and cycle
  • 🌱 Embraces feminine/witchy themes
  • πŸ“Š Detailed tracking options for symptoms, moods, cravings

Room to Improve

  • πŸ› Frequent glitches, bugs, and crashes
  • πŸ” Resets/deletes user data after updates
  • πŸ•°οΈ Inaccurate period predictions and cycle tracking
  • πŸ”’ Concerns about data privacy and sharing
  • πŸ€” Confusing or unintuitive interface
  • πŸ’° Paywall for advanced features
  • 🚫 Limited options for irregular cycles

More Nature Calendar App apps to explore

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.