Best Thermal Imaging Free Apps

250+ iOS apps curated and reviewed

3.6 avg rating
20 free apps
Updated October 2026

Out of 250+ thermal imaging free apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Thermal Imaging Free Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Infrared Thermal ImagerInfrared Thermal ImagerFree3.0★ (1)NoNoSep 2026
2Flir OneFlir OneFree4.6★ (7.6K)NoYesNov 2026
3Thermal XplorerThermal XplorerFree1.8★ (16)NoNoOct 2026
4Night Vision Thermal CameraNight Vision Thermal CameraFree3.7★ (24K)NoYesNov 2026
5AccuHeatAccuHeatFree—NoNoOct 2026
6Thermal imaging telescopeThermal imaging telescopeFree—NoNoMay 2026
7Professor Optiken ThermalProfessor Optiken ThermalFree—NoNoMay 2026
8Thermal & Night Vision CameraThermal & Night Vision CameraFree4.3★ (831)YesYesNov 2026

Top Picks for Thermal Imaging Free

3.0(1 ratings)
Free
Infrared Thermal Imager screenshot 1
Infrared Thermal Imager screenshot 2
Infrared Thermal Imager screenshot 3
Infrared Thermal Imager screenshot 4
Infrared Thermal Imager screenshot 5
Infrared Thermal Imager screenshot 6

This utility app functions as a thermal camera, offering a wide temperature measurement range. It allows users to capture images and videos, track high and low temperatures, and set custom alarms for temperature thresholds. The app also supports various regional temperature measurement modes.

Flir One#2

Flir One by FLIR Systems Aktiebolag

Thermal Camera for Smartphones
Strong Contender
📷 Photo & Video
4.6😐(7.6K ratings)
FreeIn-App Purchases
Flir One screenshot 1
Flir One screenshot 2
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Flir One screenshot 4
Flir One screenshot 5

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.

What We Love

  • 🚀 Great for finding animals
  • 🚀 Excellent affordable option for home inspection
  • 🚀 Valued piece of tech for animal rescue
  • 🚀 Excellent piece of equipment
  • 🚀 Simple but informative
  • 🚀 Works great as advertised & very user friendly
  • 🚀 Awesome system saves time and money

Room to Improve

  • 🐛 Image alignment issues
  • 🐛 Scam - won't connect
  • 🐛 Poor App/Image refresh
  • 🐛 Waste of money
  • 🐛 Poor UX, only real option
  • 🔋 Poor battery life
  • 🔒 Privacy issue
  • 🔒 Requires full access to photos
  • 🔒 Watermark advertising

More Thermal Imaging Free apps to explore

FAQ about Thermal Imaging Free

What are the best thermal imaging free apps for iPhone?
Infrared Thermal Imager tops our thermal imaging free apps ranking as of October 2026, with a 3.0-star average from 1 App Store ratings, and it's free to download.
Infrared Thermal Imager has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 250+ thermal imaging free apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.