Best Basal Body Temperature Tracker Free Apps

226+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated June 2026

Every iPhone needs a few good basal body temperature tracker free apps. We benchmark 226+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Top Picks for Basal Body Temperature Tracker Free

Body Temperature App For Fever#1

Body Temperature App For Fever by AboutMe Apps, Inc.

Thermometer. Checker. Tracker
Editor's Choice
🏥 Medical
4.7😞(22K ratings)
FreeIn-App Purchases
#15in Medical
Body Temperature App For Fever screenshot 1
Body Temperature App For Fever screenshot 2
Body Temperature App For Fever screenshot 3
Body Temperature App For Fever screenshot 4
Body Temperature App For Fever screenshot 5
Body Temperature App For Fever screenshot 6

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!

What We Love

  • ⭐ Accurate temperature readings
  • 📊 Helpful for tracking health symptoms
  • 🔍 Useful when no thermometer is available

Room to Improve

  • 💰 Subscription-based model
  • 🤔 Misleading claims about temperature measurement
  • 🤖 Inaccurate temperature estimates
Natural Cycles Fertility App#2

Natural Cycles Fertility App by NaturalCycles Nordic AB

Decode your hormonal health
Strong Contender
💪 Health & Fitness
4.8😊(29K ratings)
FreeAdsIn-App Purchases
#27in 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
Body Temperature & Thermometer#3

Body Temperature & Thermometer by 雅诗 陈

Temperature Tracker & Analyzer
Worth Considering
🔧 Utilities
4.6(57 ratings)
FreeAds
Body Temperature & Thermometer screenshot 1
Body Temperature & Thermometer screenshot 2
Body Temperature & Thermometer screenshot 3
Body Temperature & Thermometer screenshot 4
Body Temperature & Thermometer screenshot 5

Track and analyze your body temperature with this intuitive app, featuring detailed symptom logging, interactive charts, and smart data visualization. Monitor your health trends and export records for effective management.

More Basal Body Temperature Tracker Free apps to explore

4
Femometer Fertility Tracker
Femometer Fertility Tracker
Femometer Fertility Tracker
Ovulation & Period Calendar
Free

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.

💪 Health & Fitness
(70K)
5
Lively - Period Tracker, Cycle
Lively - Period Tracker, Cycle
Lively - Period Tracker, Cycle
Ovulation & Pregnancy Calendar
Free

Track your menstrual cycle effortlessly with personalized predictions and symptom tracking. Stay informed about your reproductive health and future predictions. Download now for easy period monitoring.

💪 Health & Fitness
(39K)
6
Ovia Cycle & Pregnancy Tracker
Ovia Cycle & Pregnancy Tracker
Ovia Cycle & Pregnancy Tracker
Fertility, Ovulation, & Period
Free

Track your fertility, menstrual cycle, and overall health with this comprehensive app. Monitor ovulation, record symptoms, and get personalized insights to help optimize your reproductive health. Download now to take control of your fertility journey.

🏥 Medical
(89K)
7
Premom-Ovulation Tracker, PCOS
Premom-Ovulation Tracker, PCOS
Premom-Ovulation Tracker, PCOS
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
(56K)
8
Thermometer Body Temp
Thermometer Body Temp
Thermometer Body Temp
Temperature monitor & check
Free

Monitor your body temperature with ease using this app. Keep track of your temperature readings and stay informed about changes in your health. Download now to stay on top of your well-being.

🏥 Medical
(309)
9
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)
10
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
(107K)
11
Oura
Oura
Oura
by Oura Health Oy
Free

Monitor and improve your health with a revolutionary smart ring that tracks over 20 biometrics like heart rate and body temperature. Get personalized insights on sleep, activity, and stress resilience, and track your daily movements to stay balanced and healthy. Start optimizing your routine today!

💪 Health & Fitness
(11K)
12
Glow Eve Period Tracker
Glow Eve Period Tracker
Glow Eve Period Tracker
Ovulation & Flow App
Free

Keep track of your menstrual cycle and fertility window with our user-friendly period tracking app. Monitor symptoms, predict ovulation, and stay informed about your reproductive health. Download now to take control of your cycle.

💪 Health & Fitness
(114K)
13
Cronometer: Calorie Counter
Cronometer: Calorie Counter
Cronometer: Calorie Counter
Nutrition, macro, diet tracker
Free

Track your daily food intake and nutritional information with precision using this advanced calorie counter app. Set personal goals, monitor macros, and track your diet to maintain a healthy lifestyle. Download now for accurate and comprehensive food tracking.

💪 Health & Fitness
(93K)
14
Body Temperature Recorder
Body Temperature Recorder
Body Temperature Recorder
Easy input and show graph
Free

Record and track body temperature easily with the application. Visualize temperature changes with graphs and share with family. Manage records for multiple people in one convenient app.

🏥 Medical
(433)
15
Flo: Period & Cycle Health
Flo: Period & Cycle Health
Flo: Period & Cycle Health
Ovulation & Pregnancy Calendar
Free

This application helps users track their menstrual cycle, ovulation, and fertility windows. It offers personalized insights, health tips, and a community forum for support. Download now to stay informed and empowered in managing your reproductive health.

💪 Health & Fitness
(847K)
16
Clue Period & Cycle Tracker
Clue Period & Cycle Tracker
Clue Period & Cycle Tracker
Ovulation & Fertility Calendar
Free

Track menstrual cycle, ovulation, symptoms, and fertility windows with this all-in-one period tracker. Stay informed about your reproductive health and get personalized insights to manage your menstrual health better. Download now to take charge of your cycle!

💪 Health & Fitness
(397K)
17
iCardiac: Heart Rate & Health
iCardiac: Heart Rate & Health
iCardiac: Heart Rate & Health
Heart Rate, Blood Pressure App
Free

Monitor and track your heart health with an innovative app that provides precise heart rate monitoring, blood pressure tracking, and personalized insights for optimizing your cardiovascular well-being. Download now for a healthier heart and a fulfilling life.

💪 Health & Fitness
(26K)
18
Fever & Temperature Tracker
Fever & Temperature Tracker
Fever & Temperature Tracker
App for body temp control
Free

This application allows users to easily track their body temperature, log symptoms, and monitor their overall health by recording temperature, symptoms, and well-being ratings, and provides visual data insights and shareable health journals. Download it today to start taking control of your health by logging and tracking your vital signs and sharing the data with your healthcare provider.

💪 Health & Fitness
(28)
19
Body Temperature Tracer
Body Temperature Tracer
Body Temperature Tracer
Analyse & monitor Temperature
Free

This application helps track and monitor body temperature, enabling users to take care of their health and maintain a healthy life. By recording temperature data, users can generate graphical representations and make informed decisions, while being advised to consult a doctor for medical purposes.

💪 Health & Fitness
(33)
20
Fever Track: Body Thermometer
Fever Track: Body Thermometer
Fever Track: Body Thermometer
Temperature Checker & Tracker
Free
💪 Health & Fitness
(13)