Best Basal Body Temperature Tracker Proven Apps

223+ iOS apps curated and reviewed

4.7 avg rating
19 free apps
Updated May 2026

Natural Cycles Fertility App is the household name in basal body temperature tracker proven, but it's far from the only option. We track 223+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Basal Body Temperature Tracker Proven

Natural Cycles Fertility App#1

Natural Cycles Fertility App by NaturalCycles Nordic AB

Decode your hormonal health
Editor's Choice
💪 Health & Fitness
4.7😊(3.1K ratings)
FreeAdsIn-App Purchases
#28in 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

A highly effective FDA-cleared contraception app that tracks ovulation based on body temperature, offering hormone-free birth control and personalized fertility insights. It adapts to irregular cycles, provides daily fertility status, and supports natural family planning. Sign up for a subscription for a free thermometer and precise cycle monitoring.

What We Love

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

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
Femometer Fertility Tracker#2

Femometer Fertility Tracker by Bongmi Global Group

Ovulation & Period Calendar
Strong Contender
💪 Health & Fitness
4.9😊(70K ratings)
FreeIn-App Purchases
Femometer Fertility Tracker screenshot 1
Femometer Fertility Tracker screenshot 2
Femometer Fertility Tracker screenshot 3
Femometer Fertility Tracker screenshot 4
Femometer Fertility Tracker screenshot 5
Femometer Fertility Tracker screenshot 6

Track your cycle and monitor fertility effortlessly with this intuitive app. Stay informed about ovulation periods, track your menstrual cycle, and receive personalized predictions. Start optimizing your chances of conception today.

What We Love

  • 🚀 Reliable and accurate predictions
  • 👍 Customizable and helpful features
  • 💡 Intelligent LH test recognition
  • 👍 Great for tracking cycles and ovulation

Room to Improve

  • 🐛 Syncing and connectivity issues
  • 🔍 Limited fertility factor tracking
  • 💬 Overwhelming community discussions
Kindara: Fertility Tracker#3

Kindara: Fertility Tracker by Kindara, Inc.

Ovulation & fertility tracker
Worth Considering
🏥 Medical
4.7😊(9.9K ratings)
FreeIn-App Purchases
Kindara: Fertility Tracker screenshot 1
Kindara: Fertility Tracker screenshot 2
Kindara: Fertility Tracker screenshot 3
Kindara: Fertility Tracker screenshot 4
Kindara: Fertility Tracker screenshot 5
Kindara: Fertility Tracker screenshot 6

Track your menstrual cycle, ovulation, and fertility with our user-friendly app. Stay informed about your reproductive health, record symptoms, and receive personalized insights for better family planning.

What We Love

  • 💻 Consistent and effective
  • 🤱 Helped me through many phases
  • 🔍 Accurate for tracking ovulation
  • 📊 Beautifully formatted charts

Room to Improve

  • 🐛 App crashing and freezing
  • 🔒 No customer support or updates
  • 💰 Expensive premium subscription

More Basal Body Temperature Tracker Proven apps to explore

4
iPeriod Period Tracker +
iPeriod Period Tracker +
iPeriod Period Tracker +
Period & Cycle Tracker
$1.99

This women's health journal app offers comprehensive tracking of menstrual cycles, symptoms, weight, and more, with features like period prediction and fertility tracking. It also provides customization, automatic backup, data syncing, and premium subscription options for advanced features like charting and BBT analysis. Download now to better understand your body and track your health with ease.

💪 Health & Fitness
(2.7K)
5
Body Temperature App For Fever
Body Temperature App For Fever
Body Temperature App For Fever
Thermometer. Checker. Tracker
Free

Track, log, and monitor your body temperature, symptoms, and medications with ease using this app. Stay proactive about your health by keeping an eye on your well-being and sharing your data with healthcare professionals. Download now for free!

🏥 Medical
(22K)
6
Huckleberry: Baby & Child
Huckleberry: Baby & Child
Huckleberry: Baby & Child
Baby Tracker & Sleep Experts
Free

Huckleberry is a baby monitoring application that helps parents track their baby's sleep, feedings, diaper changes, and growth progress. With easy-to-use interfaces and data analysis, parents can ensure their baby is healthy and thriving. Download now to stay on top of your baby's needs effortlessly.

🏥 Medical
(13K)
7
Premom Ovulation Tracker & BBT
Premom Ovulation Tracker & BBT
Premom Ovulation Tracker & BBT
Period, Fertility & Pregnancy
Free

Track your menstrual cycle, predict ovulation, and monitor fertility signs with this comprehensive app designed to help you plan or prevent pregnancy. Stay on top of your reproductive health easily and accurately.

💪 Health & Fitness
(55K)
8
Fertility Friend FF Tracker
Fertility Friend FF Tracker
Fertility Friend FF Tracker
Ovulation Cycle & Fertile Days
Free

An advanced ovulation and period tracking app that helps you determine fertile days, track fertility signs, and offers personalized insights, tips, and analysis to aid conception. Enhance your fertility awareness and track your journey seamlessly with this comprehensive fertility friend app.

💪 Health & Fitness
(7.3K)
9
MyFlo® Period Tracker Calendar
MyFlo® Period Tracker Calendar
MyFlo® Period Tracker Calendar
Cycle Syncing® & Ovulation
Free

Track your menstrual cycle, symptoms, moods, and more with this innovative period tracker app. Sync your cycle with lifestyle factors for personalized insights and predictions. Download now for a harmonious cycle experience!

💪 Health & Fitness
(14K)
10
HiMommy: Ovulation & Pregnancy
HiMommy: Ovulation & Pregnancy
HiMommy: Ovulation & Pregnancy
Period & Cycle tracker, Baby
Free

Stay informed and monitor your pregnancy with our all-in-one app. Track your baby's development, receive personalized tips, and connect with a supportive community of soon-to-be parents. Download now to embark on your pregnancy journey with confidence.

🏥 Medical
(4.8K)
11
Menstrual Calendar FMC
Menstrual Calendar FMC
Menstrual Calendar FMC
Period Tracker, Fertile Days
Free

An intuitive period tracking and fertility prediction app, allowing users to record their menstrual cycles, moods, weight, and wellness data. Features include customizable tracking options, cycle statistics, privacy settings, and integration with FertilityFriend for advanced analytics. Take control of your cycle with accurate predictions and personalized reminders.

💪 Health & Fitness
(190)
12
Fever Thermometer | Body Temp
Fever Thermometer | Body Temp
Fever Thermometer | Body Temp
Temperature App for 98.6 Gauge
Free

Track body temperatures for you and your family with an easy-to-use Thermometer Body Temp app. No sign-up or internet needed, just log temperatures and notes, with the option to upgrade for advanced features like temperature tracking and PDF export. Always consult a doctor with your data for medical advice.

🏥 Medical
(246)
13
Stardust Period Tracker
Stardust Period Tracker
Stardust Period Tracker
Track your period & cycle
Free

Discover the stars with our celestial app that helps you track and observe the night sky. Point your phone towards the heavens to identify stars, planets, and constellations in real-time, making stargazing an interactive experience. Start exploring the cosmos today by downloading the app!

💪 Health & Fitness
(104K)
14
Baby Tracker!
Baby Tracker!
Baby Tracker!
Baby tracker and breastfeeding
Free

Track all aspects of your baby's care with this powerful app – monitor feeding, sleep, diapers, photos, and more in one convenient place. Keep informed on your little one's patterns and behaviors easily with this user-friendly tool. Download now for a comprehensive baby tracking experience.

🏥 Medical
(5K)
15
Period Tracker Period Calendar
Period Tracker Period Calendar
Period Tracker Period Calendar
Cycle Tracker & Ovulation
Free

Track your menstrual cycle, ovulation period, and fertility window with this intuitive application. Stay informed about your reproductive health and make informed decisions about your well-being. Download now to take control of your cycle.

💪 Health & Fitness
(169K)
16
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 all in one place with the most comprehensive app of its kind. Get personalized insights, connect with a supportive community, and improve your chances of getting pregnant. Join millions of women who trust this app - start your journey to motherhood today! Download now.

💪 Health & Fitness
(74K)
17
Pregmate Ovulation Tracker
Pregmate Ovulation Tracker
Pregmate Ovulation Tracker
Period • Fertility Test Reader
Free

Track your fertility and menstrual cycle with ease using our innovative ovulation tracker. Stay informed about your most fertile days and optimize your chances of conception. Download now for a comprehensive approach to family planning.

💪 Health & Fitness
(11K)
18
Baby + | Your Baby Tracker
Baby + | Your Baby Tracker
Baby + | Your Baby Tracker
Baby Development & Tracker App
Free

Track your baby's development, growth, feeding schedule, sleep patterns, and more with this comprehensive baby tracker app. Stay organized and informed about your baby's progress easily on your phone. Download now and simplify your parenting journey.

🏥 Medical
(7.8K)
19
Harmony: Cycle Syncing, Period
Harmony: Cycle Syncing, Period
Harmony: Cycle Syncing, Period
Period & Ovulation Tracker
Free

Track your cycle, mood, and symptoms with Harmony: Cycle Sync. Understand how your body changes throughout your menstrual cycle and receive personalized insights to improve your overall well-being. Download now to optimize your health and harmony.

🌟 Lifestyle
(8.7K)
20
SnapCal: AI Calorie Counter
SnapCal: AI Calorie Counter
SnapCal: AI Calorie Counter
Food Tracker for Weight Loss
Free

SnapCal is a weight management companion app that uses smart calorie tracking and personalized meal planning to help you reach your goals. Track your meals, monitor your progress, and receive daily reminders and nudges to stay on track with a subscription-based service that promotes balanced eating and sustainable weight loss.

💪 Health & Fitness
(8.8K)