Best Free Thermometer App

248+ iOS apps curated and reviewed

3.9 avg rating
20 free apps
Updated November 2026

Finding the right free thermometer app can be overwhelming with so many options. We've analyzed 248+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Free Thermometer App (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1ThermometerThermometerFree4.4★ (4.4K)YesYesNov 2026
2Body Temperature Fever CheckerBody Temperature Fever CheckerFree4.4★ (308)YesYesOct 2026
3Thermometer: Digital Room TempThermometer: Digital Room TempFree3.8★ (81)NoYesNov 2026
4Thermometer++ AppThermometer++ AppFree4.7★ (7.3K)YesYesNov 2026
5Thermometer - Indoor & OutdoorThermometer - Indoor & OutdoorFree4.2★ (3.4K)YesNoNov 2026
6@Thermometer@ThermometerFree4.5★ (225)YesYesNov 2026
7Real Thermometer & TemperatureReal Thermometer & TemperatureFree2.8★ (9)YesYesNov 2026
8HD Thermometer ⊎HD Thermometer ⊎Free4.3★ (13K)YesYesNov 2026

Top Picks for Free Thermometer App

Thermometer#1

Thermometer by Alexandre Morcos

Temperature & More
Editor's Choice
🔧 Utilities
4.4😞(4.4K ratings)
FreeAdsIn-App Purchases
Thermometer screenshot 1
Thermometer screenshot 2
Thermometer screenshot 3

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
  • 🔋 High battery consumption
  • 📢 Excessive ads even in paid version
Body Temperature Fever Checker#2

Body Temperature Fever Checker by Appnap Technologies Limited

Thermometer App, Temp Tracker
Strong Contender
🏥 Medical
4.4😞(308 ratings)
FreeAdsIn-App Purchases
Body Temperature Fever Checker screenshot 1
Body Temperature Fever Checker screenshot 2
Body Temperature Fever Checker screenshot 3
Body Temperature Fever Checker screenshot 4
Body Temperature Fever Checker screenshot 5
Body Temperature Fever Checker 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.

What We Love

  • 📈 Trend analysis helpful
  • 👨‍⚕️ Easy doctor sharing
  • ☁️ Cloud backup available
  • 🆓 Genuine and free app
  • 👨‍👩‍👧‍👦 Great for parents
  • 👨‍👩‍👧‍👦 Tracks family health
  • 😌 No ads observed
  • 👍 Brilliant developer thought
  • ⏰ Automatic date/time
  • ✅ Works smoothly
  • 💡 Easy to learn
  • 📝 Detailed health records
  • ❤️ Genuine and free
  • 👍 Good for parents
  • 👨‍👩‍👧‍👦 Tracks kids' health
  • 👍 Good for frequent sickness
  • 👍 Good for tracking vitals
  • 👍 Useful for temperature log
  • 🤝 Share data with doctors

Room to Improve

  • ❓ Misleading app description
  • ❌ Cannot take temperature
  • 🤔 Useless without thermometer
  • 🤷‍♂️ Why track normal temps?
  • 🐛 Time recording bug
  • 🏠 App returns to house
  • 🤷‍♀️ Not working as expected
Thermometer: Digital Room Temp#3

Thermometer: Digital Room Temp by Tirin

Indoor Humidity & Weather App
Worth Considering
☀️ Weather
3.8(81 ratings)
FreeIn-App Purchases
Thermometer: Digital Room Temp screenshot 1
Thermometer: Digital Room Temp screenshot 2
Thermometer: Digital Room Temp screenshot 3
Thermometer: Digital Room Temp screenshot 4
Thermometer: Digital Room Temp screenshot 5
Thermometer: Digital Room Temp screenshot 6

This app transforms your smartphone into a precise digital thermometer. It displays real-time indoor room temperature, outdoor weather, and humidity levels with a classic retro interface. Customize themes and switch between Celsius and Fahrenheit for easy climate monitoring.

More Free Thermometer App apps to explore

FAQ about Free Thermometer App

What is the best free thermometer app for iPhone?
Thermometer tops our free thermometer app ranking as of November 2026, with a 4.4-star average from 4.4K App Store ratings, and it's free to download.
Thermometer shows ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 248+ free thermometer app on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.