Best Natural Cycles Apple Watch Apps

250+ iOS apps curated and reviewed

4.5 avg rating
19 free apps
Updated September 2026

With an average user rating of 4.5★, the natural cycles apple watch category is one of the App Store's strongest. Browse all 250+ apps we track, sorted so the most loved ones surface first.

Compare top Natural Cycles Apple Watch Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Natural Cycles: Fertility AppNatural Cycles: Fertility AppFree4.8★ (30K)YesYesSep 2026
2Cycles: Period & Cycle TrackerCycles: Period & Cycle TrackerFree4.7★ (27K)NoYesSep 2026
3WatchWatchFree3.3★ (9.3K)NoNoSep 2026
4OuraOuraFree4.9★ (291K)NoNoSep 2026
5@Watch@WatchFree4.9★ (19)NoNoMay 2026
6Battery Watch for Apple WatchBattery Watch for Apple WatchFree3.5★ (89)NoNoJul 2026
7Smart Alarm Clock for WatchSmart Alarm Clock for Watch$2.994.2★ (372)NoNoAug 2026
8Watch Battery MonitorWatch Battery MonitorFree4.2★ (32)NoNoSep 2026

Top Picks for Natural Cycles Apple Watch

Natural Cycles: Fertility App#1

Natural Cycles: Fertility App by NaturalCycles Nordic AB

Ovulation Tracker・FDA-cleared
Editor's Choice
💪 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

  • 👍 Teaches users about their cycle
  • 👍 Helps users understand their body
  • 👍 Provides a natural contraceptive option
  • 👍 Accurate in predicting ovulation and periods
  • 👍 Empowers users to take control of their fertility
  • 👍 Improves mood and reduces side effects compared to hormonal birth control
  • 👍 Useful for both preventing and planning pregnancy
  • 👍 Detailed data and insights about user's cycle

Room to Improve

  • 🐛 Inconsistent in predicting ovulation and periods for some users
  • 🐛 Thermometer issues (loud, hard to read, no Bluetooth connectivity)
  • 🐛 Difficult to use for users with irregular cycles or disrupted sleep schedules
  • 🐛 Lack of customer support responsiveness
  • 🐛 Automatic subscription renewal issues and no refunds
  • 🐛 Algorithm not always accurate, leading to unintended pregnancies
  • 🐛 Cluttered and unintuitive app interface
Cycles: Period & Cycle Tracker#2

Cycles: Period & Cycle Tracker by Perigee

Fertility & Ovulation Calendar
Strong Contender
💪 Health & Fitness
4.7😊(27K ratings)
FreeIn-App Purchases
Cycles: Period & Cycle Tracker screenshot 1
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Cycles: Period & Cycle Tracker screenshot 4
Cycles: Period & Cycle Tracker screenshot 5
Cycles: Period & Cycle Tracker screenshot 6

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.

What We Love

  • 🚀 Easy to use
  • 📆 Accurate cycle tracking
  • 🤝 Ability to share with partner
  • 🗓️ Helpful for planning pregnancy
  • ✨ Clean and intuitive design
  • 🔍 Detailed symptom logging

Room to Improve

  • 🐛 Issues with data persistence and syncing
  • 🔧 Confusing interface for editing cycle details
  • 💰 Paid features should be free
  • 🤔 Limited customization options
  • 📊 Lack of advanced analytics and insights
Watch#3

Watch by Apple

Worth Considering
🔧 Utilities
3.3😐(9.3K ratings)
Free
Watch screenshot 1
Watch screenshot 2

Manage your Apple Watch by pairing it with your iPhone. Customize watch faces, app notifications, and the Dock. Sync photos, music, and podcasts for offline use. Discover and download new apps and watch faces from the App Store.

What We Love

  • 🚀 Saves lives
  • ⌚ Useful for tracking fitness and health
  • 👍 Customizable watch faces

Room to Improve

  • 🐛 Pairing and connectivity issues
  • 🔋 Poor battery life
  • 🤔 Complicated user experience
  • 🤖 Unreliable fitness tracking

More Natural Cycles Apple Watch apps to explore

FAQ about Natural Cycles Apple Watch

What are the best natural cycles apple watch apps for iPhone?
Natural Cycles: Fertility App tops our natural cycles apple watch apps ranking as of September 2026, with a 4.8-star average from 30K App Store ratings, and it's free to download.
Yes — 19 of the top natural cycles apple watch apps we rank are free to download, including Natural Cycles: Fertility App and Cycles: Period & Cycle Tracker.
Natural Cycles: Fertility App shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 250+ natural cycles apple watch apps on the iOS App Store as of September 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.