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

Estimate and track body temperature trends to monitor potential fever symptoms. Log data, export reports for healthcare providers, and monitor family members' temperatures. Includes features like heart rate estimation and symptom tracking.

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

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

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
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Log and analyze your body temperature with detailed symptom tracking. Visualize trends with interactive charts and export your health records. Supports multiple languages for global users.

More Basal Body Temperature Tracker Free apps to explore

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

This app helps women track their menstrual cycles, predict ovulation, and monitor fertility. It records period dates, symptoms, and test results to provide personalized insights and increase conception rates. It also supports users throughout pregnancy with tracking and educational resources.

Period and PMS trackingOvulation and fertile window predictionBasal Body Temperature (BBT) charting
💪 Health & Fitness
(70K)
free with in-app purchases
5
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
💪 Health & Fitness
(42K)
free with in-app purchases
6
Ovia Cycle & Pregnancy Tracker
Ovia Cycle & Pregnancy Tracker
Ovia Cycle & Pregnancy Tracker
Fertility, Ovulation, & Period
Free

Track your menstrual cycle, fertility, pregnancy, postpartum recovery, and menopause with personalized insights and expert articles. This app offers tools for ovulation prediction, baby growth tracking, and symptom management.

Period & Fertility calendarPregnancy tracker with baby growthPostpartum recovery modes
🏥 Medical
(89K)
free with in-app purchases
7
Premom-Ovulation Tracker, PCOS
Premom-Ovulation Tracker, PCOS
Premom-Ovulation Tracker, PCOS
Period, Fertility & 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
💪 Health & Fitness
(57K)
free with in-app purchases
8
Thermometer Body Temp
Thermometer Body Temp
Thermometer Body Temp
Temperature monitor & check
Free

Easily track and analyze your body temperature readings on your iOS device. Record measurements in Celsius or Fahrenheit, add notes about symptoms, and generate shareable reports for healthcare professionals. The app offers cloud storage, multiple profiles, and helpful reminders.

Record temperature in Celsius and FahrenheitAdd notes and symptom dataCloud storage and multi-device access
🏥 Medical
(309)
free with in-app purchases
9
Fever Thermometer | Body Temp
Fever Thermometer | Body Temp
Fever Thermometer | Body Temp
Temperature App for 98.6 Gauge
Free

Easily log and track body temperature for yourself and your family. Record measurements, add notes about health conditions or medications, and view a clear history of your readings. This utility does not require signup or internet access.

Log body temperatureTrack family temperatureAdd notes for health/medication
🏥 Medical
(246)
freemium
10
Stardust Period Tracker
Stardust Period Tracker
Stardust Period Tracker
Track your period & cycle
Free

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.

Period and ovulation predictionPregnancy tracking with ARDaily personalized insights
💪 Health & Fitness
(108K)
free with in-app purchases
11
Oura
Oura
Oura
by Oura Health Oy
Free

This smart ring and companion app provide daily health insights and personalized recommendations based on your body's biometrics. Track sleep, activity, and readiness with actionable guidance to improve overall wellness and understand your body's signals.

Daily Sleep, Activity, and Readiness scoresAccurate biometric tracking (heart rate, temp, SpO2)In-depth sleep analysis and optimization tips
💪 Health & Fitness
(262K)
free
12
Glow Eve Period Tracker
Glow Eve Period Tracker
Glow Eve Period Tracker
Ovulation & Flow App
Free

This app helps women track their menstrual cycles, predict periods and ovulation, and log moods and symptoms. It offers insights into health trends and a supportive community for discussing sexual health.

Period and ovulation predictionMood and symptom loggingHealth data visualization
💪 Health & Fitness
(114K)
freemium
13
Cronometer: Calorie Counter
Cronometer: Calorie Counter
Cronometer: Calorie Counter
Nutrition, macro, diet tracker
Free

Track your diet and exercise with an extensive food database and detailed nutrient breakdowns. Monitor progress towards health goals, integrate with fitness devices, and gain insights into sleep patterns. Offers premium features for enhanced tracking and an ad-free experience.

Extensive verified food databaseDetailed nutrient and calorie trackingFitness goal setting and progress monitoring
💪 Health & Fitness
(93K)
free with in-app purchases
14
Body Temperature Recorder
Body Temperature Recorder
Body Temperature Recorder
Easy input and show graph
Free

Easily record your body temperature and visualize trends with automatic graphing. Track associated symptoms and share your data with healthcare providers or family. Supports multiple users and temperature units.

Record body temperatureAutomatic graphing of temperature trendsSymptom tracking
🏥 Medical
(13K)
free with in-app purchases
15
Flo Cycle & Period Tracker
Flo Cycle & Period Tracker
Flo Cycle & Period Tracker
Ovulation & Pregnancy Calendar
Free

This app helps women track their menstrual cycles, ovulation, and fertility. It offers personalized insights, pregnancy support, and tools for managing perimenopause symptoms, with a focus on data privacy and security.

Period and ovulation trackingFertility and pregnancy supportSymptom and mood logging
💪 Health & Fitness
(1.9M)
free with in-app purchases
16
Clue Period & Cycle Tracker
Clue Period & Cycle Tracker
Clue Period & Cycle Tracker
Ovulation & Fertility Calendar
Free

This app helps women and people with cycles understand their bodies through period tracking, fertility predictions, and health insights. It offers personalized forecasts, tracks over 100 experiences, and provides science-based content. Connect wearables for advanced health analysis.

Personalized period predictionsTrack 100+ cycle-related experiencesFertility and ovulation calculator
💪 Health & Fitness
(398K)
free with in-app purchases
17
iCardiac: Heart Rate & Health
iCardiac: Heart Rate & Health
iCardiac: Heart Rate & Health
Heart Rate, Blood Pressure App
Free

Monitor your heart health and overall well-being with advanced tracking and AI-powered insights. Analyze heart rate, blood pressure, and mood to understand your body's signals and receive personalized health guidance.

Precise heart monitoring (HR, HRV)Blood pressure, temperature, SpO2 trackingMood and emotion correlation
💪 Health & Fitness
(26K)
free with in-app purchases
18
Fever & Temperature Tracker
Fever & Temperature Tracker
Fever & Temperature Tracker
App for body temp control
Free

Easily record body temperature, log symptoms, and monitor health trends. Visualize data with interactive graphs and share your health history with your doctor. Take control of your well-being with this intuitive health journal.

Simple temperature loggingSymptom and well-being recordingHealth history journal
💪 Health & Fitness
(28)
free with in-app purchases
19
Body Temperature Tracer
Body Temperature Tracer
Body Temperature Tracer
Analyse & monitor Temperature
Free

Easily record and visualize your body temperature trends. This tool helps you monitor your health and that of your family or patients through graphical representations. Remember, this app's measurements are for recommendation only and not for medical diagnosis.

Record body temperatureGenerate graphical representationsMonitor family health
💪 Health & Fitness
(33)
ad-supported
20
Fever Track: Body Thermometer
Fever Track: Body Thermometer
Fever Track: Body Thermometer
Temperature Checker & Tracker
Free

Monitor your health with this app, which allows you to log body temperature, symptoms, and mood. It provides calendar views, statistics, and reminders to help you track your well-being and identify health trends.

Manual temperature logging (°C/°F)Symptom and mood trackingCalendar and historical views
💪 Health & Fitness
(13)
free with in-app purchases