Best Free Temperature Reader Apps

215+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated May 2026

Finding the right free temperature reader app can be overwhelming with so many options. We've analyzed 215+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Top Picks for Free Temperature Reader

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
Thermometer#2

Thermometer by Alexandre Morcos

Temperature & More
Strong Contender
🔧 Utilities
4.4😞(3.9K ratings)
FreeAdsIn-App Purchases
Thermometer screenshot 1
Thermometer screenshot 2
Thermometer screenshot 3
Thermometer screenshot 4

This app transforms your iPhone or iPod Touch into a thermometer, displaying the exact outside temperature based on your current location. It provides detailed local weather conditions and allows you to check temperatures for other cities.

What We Love

  • 👍 Simple and easy to use
  • 🚀 Quick temperature display
  • 💡 Useful for checking outdoor temperature

Room to Improve

  • 🐛 Inaccurate temperature readings
  • 🔍 Doesn't measure room/indoor temperature
  • 💤 Doesn't update temperature in real-time
Thermometer Body Temp#3

Thermometer Body Temp by Appnap Technologies Limited

Temperature monitor & check
Worth Considering
🏥 Medical
4.4(309 ratings)
FreeAdsIn-App Purchases
Thermometer Body Temp screenshot 1
Thermometer Body Temp screenshot 2
Thermometer Body Temp screenshot 3
Thermometer Body Temp screenshot 4
Thermometer Body Temp screenshot 5
Thermometer Body Temp screenshot 6

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.

More Free Temperature Reader apps to explore

4
Thermometer: Body Temperature
Thermometer: Body Temperature
Thermometer: Body Temperature
Fever & Temperature Checker
Free

Estimate body temperature using your smartphone without a physical thermometer. Track heart rate, blood pressure, and sync with Apple Watch for real-time fever alerts. Log custom health data and generate shareable PDF reports.

Temperature estimation without a thermometerApple Watch Series 8 sync for readingsHigh fever alerts
💪 Health & Fitness
(394)
free with in-app purchases
5
ThermoWorks
ThermoWorks
ThermoWorks
by ThermoWorks, Inc.
Free

Monitor cooking, BBQ, and ambient temperatures with compatible Bluetooth and Wi-Fi devices. Features enhanced graphing, alarms with push notifications, and cloud storage for session data. Ideal for professionals and enthusiasts needing precise temperature control.

Real-time temperature monitoringCustomizable temperature alarmsPush notifications for alerts
🔧 Utilities
(16K)
free
6
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
7
TempPro Sensor
TempPro Sensor
TempPro Sensor
by iTronics Co., Limited
Free

Monitor real-time temperature and humidity with historical data up to one year. Receive alerts when readings fall outside your set range, ensuring optimal conditions.

Real-time temperature displayReal-time humidity displayHeat index display
🌟 Lifestyle
(11K)
free
8
Temperature Checker
Temperature Checker
Temperature Checker
Room & Body Heat Monitor
Free

Monitor your environment and personal well-being with this dual-purpose temperature tracker. It provides hyper-local weather forecasts and allows for quick logging of body temperature, offering insights into comfort and wellness.

Dual temperature tracking (weather, room, body)Live weather forecastsSmart profiles for family and friends
💪 Health & Fitness
(6)
free with in-app purchases
9
HD Thermometer ⊎
HD Thermometer ⊎
HD Thermometer ⊎
Current temperature & more
Free

Displays the current temperature for your location using a weather service. Offers a clean, rustic interface and allows saving multiple locations. Not a true thermometer, it relies on external data for accuracy.

Current location temperature displayRustic style interfaceSave multiple locations
☀️ Weather
(13K)
free with in-app purchases
10
Thermometer++ App
Thermometer++ App
Thermometer++ App
Temperature and more
Free

Transform your device into a precise thermometer. Get real-time outdoor temperature, humidity, pressure, and wind data for your current location. Utilizes AI to combine data from multiple sources for accurate, up-to-the-minute weather information.

Real-time temperature, humidity, pressure, and windThermometer, barometer, and hygrometer functionsCurrent location or custom location selection
☀️ Weather
(7.1K)
free with in-app purchases
11
Body Temperature & Thermometer
Body Temperature & Thermometer
Body Temperature & Thermometer
Temperature Tracker & Analyzer
Free

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.

Body temperature trackingSymptom loggingInteractive charts
🔧 Utilities
(57)
ad-supported
12
MEATER® Smart Meat Thermometer
MEATER® Smart Meat Thermometer
MEATER® Smart Meat Thermometer
Bluetooth & WiFi Thermometer
Free

This app works with a wireless meat thermometer to help you cook meats perfectly. It provides cook time estimates, guided cooking instructions, and notifications when your food is ready. Monitor your food remotely and enjoy perfectly cooked meals every time.

Wireless meat thermometer integrationCook time estimatesGuided Cook™ system
🍔 Food & Drink
(126K)
free
13
Flir One
Flir One
Flir One
Thermal Camera for Smartphones
Free

This app transforms your smartphone into a thermal imaging device when connected to a compatible camera. It helps identify hidden issues like water damage, electrical faults, and HVAC problems with advanced visual enhancements and measurement tools. Document and share your findings easily.

Thermal camera viewCapture photos and videosTemperature spot measurements
📷 Photo & Video
(7.5K)
free with in-app purchases
14
Kinsa
Kinsa
Kinsa
Health & Symptoms Guide
Free

Track family health, symptoms, and temperatures to receive personalized care guidance. This app helps you remember crucial details for recovery and doctor visits, integrating with HealthKit for seamless data sharing.

Age-specific fever and symptom guidanceTemperature, symptom, and medication trackingFamily member health profiles
🏥 Medical
(45K)
free with in-app purchases
15
FireBoard®
FireBoard®
FireBoard®
by FireBoard Labs, LLC
Free

This smart thermometer offers cloud-connected remote temperature monitoring for various environments. It supports multiple probes for accurate readings and can be accessed from anywhere via the cloud.

Cloud-connected smart thermometerRemote temperature monitoringSupports up to 6 temperature probes
🔧 Utilities
(4.7K)
paid
16
Temperature Sensor Reader
Temperature Sensor Reader
Temperature Sensor Reader
by Keeping It Cool, Inc.
Free
💼 Business
(0)
17
Thermometer -Temperature Today
Thermometer -Temperature Today
Thermometer -Temperature Today
Thermometer : Temperature App
Free

This app provides real-time ambient temperature and humidity readings, along with daily weather forecasts. It offers a user-friendly interface to check current conditions, humidity levels, and environmental data like wind speed and air pressure. Easily switch between measurement units for a personalized weather experience.

Temperature estimationTemperature and humidity checkerWeather temperature check
🔧 Utilities
(144)
free
18
Body Temperature, Thermometer
Body Temperature, Thermometer
Body Temperature, Thermometer
Digital Tracker
Free

Easily log and analyze your temperature readings to track trends over time. This app provides a user-friendly interface for recording data and offers secure storage for your health history. It's designed to help you manage temperature information efficiently.

Easy temperature loggingDetailed history and trendsSecure data storage
🏥 Medical
(16)
free with in-app purchases
19
Body Temperature App
Body Temperature App
Body Temperature App
Body Temperature Log For Fever
Free

This app allows users to log body temperature readings along with associated symptoms like cough or body pain. It facilitates easy sharing of this data with healthcare providers via email. The application supports managing records for multiple individuals and integrates with Apple's Health App.

Log body temperature readingsRecord associated symptomsShare data via email
🏥 Medical
(450)
free with in-app purchases
20
Room Temperature Thermometer.
Room Temperature Thermometer.
Room Temperature Thermometer.
Temperature & Thermometer
Free

Monitor your room's real-time temperature and humidity with a comfort indicator. Enjoy relaxing weather sounds and receive daily tips for a healthier lifestyle. Features a sleep timer for peaceful rest.

Real-time room temperatureHumidity level detectionComfort status indicator
☀️ Weather
(206)
ad-supported