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Best Thermal Imaging Free Apps

250+ iOS apps curated and reviewed

3.6 avg rating
20 free apps
Updated August 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 (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Flir OneFlir OneFree4.6★ (7.6K)NoYesAug 2026
2Infrared Thermal ImagerInfrared Thermal ImagerFree3.0★ (1)NoNoJun 2026
3Thermal & Night Vision CameraThermal & Night Vision CameraFree4.4★ (743)YesYesAug 2026
4Night Vision Thermal CameraNight Vision Thermal CameraFree3.7★ (24K)NoYesAug 2026
5Thermal XplorerThermal XplorerFree1.8★ (12)NoNoJul 2026
6Thermal Vision: Filter CameraThermal Vision: Filter CameraFree4.5★ (462)NoYesAug 2026
7Thermal imaging telescopeThermal imaging telescopeFree—NoNoMay 2026
8Thermal KitThermal KitFree—NoNoJul 2026

Top Picks for Thermal Imaging Free

Flir One#1

Flir One by FLIR Systems Aktiebolag

Thermal Camera for Smartphones
Editor's Choice
📷 Photo & Video
4.6😐(7.6K ratings)
FreeIn-App Purchases
Flir One screenshot 1
Flir One screenshot 2
Flir One screenshot 3
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

Room to Improve

  • 🐛 Image alignment issues
  • 🐛 Scam - won't connect
  • 🐛 Poor App/Image refresh
Infrared Thermal Imager#2

Infrared Thermal Imager by Shenzhen Dianyang Technology Co., Ltd.

Infrared Thermal Imager
Strong Contender
🔧 Utilities
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.

Thermal & Night Vision Camera#3

Thermal & Night Vision Camera by CAGE HOOPS LLC

Heat sensor effects
Worth Considering
📷 Photo & Video
4.4😞(743 ratings)
FreeAdsIn-App Purchases
Thermal & Night Vision Camera screenshot 1
Thermal & Night Vision Camera screenshot 2
Thermal & Night Vision Camera screenshot 3
Thermal & Night Vision Camera screenshot 4
Thermal & Night Vision Camera screenshot 5
Thermal & Night Vision Camera screenshot 6

Simulate thermal and night vision camera effects on your phone. Capture photos and videos with realistic heat patterns and low-light visuals. Apply filters to live footage or existing media from your gallery.

What We Love

  • 👍 Night vision functionality works reasonably well
  • 🎨 Good visual quality during daytime use
  • 💡 Fun and entertaining app for casual use
  • ⭐ Positive user experience for some users

Room to Improve

  • 💰 Misleading free-to-play model with mandatory paid subscription
  • 🐛 Thermal camera is inaccurate and non-functional
  • 🐛 Thermal imaging doesn't work in dark conditions despite claims

More Thermal Imaging Free apps to explore

4
Night Vision Thermal Camera
Night Vision Thermal Camera
Night Vision Thermal Camera
Live camera filter effects
Free

Explore the world in different spectrums with live camera filters. Apply night vision, thermal, or UV effects to your photos and videos. Discover hidden details and observe objects from a new perspective.

Night Vision FilterThermo Vision FilterUV Vision Filter
📷 Photo & Video
(24K)
free with in-app purchases
5
Thermal Xplorer
Thermal Xplorer
Thermal Xplorer
by UNI-TREND TECHNOLOGY (CHINA) CO.,LTD.
Free

View real-time thermal images from compatible outdoor cameras via WiFi. This app allows for remote capture, video recording, and easy sharing of thermal imaging data, useful for both day and night observation.

Real-time thermal image viewingWiFi connection to camerasRemote capture functionality
🔧 Utilities
(12)
free
6
Thermal Vision: Filter Camera
Thermal Vision: Filter Camera
Thermal Vision: Filter Camera
Night & Infrared Effect
Free

Transform your photos and videos with unique thermal effects. Explore five dynamic filters, adjust sensitivity, and easily save or share your creative captures. Perfect for photographers and experimenters seeking an extraordinary visual edge.

Five unique thermal filtersAdjustable filter sensitivityPhoto and video capture
🔧 Utilities
(462)
subscription
7
Thermal imaging telescope
Thermal imaging telescope
Thermal imaging telescope
by Software Shop
Free
🔧 Utilities
(0)
8
Thermal Kit
Thermal Kit
Thermal Kit
by Shenzhen Chengen Thermovision Technology Co., Ltd
Free
🔧 Utilities
(0)
9
ThermalSmart
ThermalSmart
ThermalSmart
by 希远 周
Free

Connects wirelessly to infrared thermal imaging devices for real-time thermal previews, detailed image analysis, and automated report generation. Streamlines workflows for industrial, power, and maintenance applications to enhance efficiency.

Wireless connection to thermal devicesReal-time thermal previewImage analysis tools
📷 Photo & Video
(0)
free
10
Steiner Cinder
Steiner Cinder
Steiner Cinder
thermal imaging
Free

This app enhances a thermal imager by providing real-time video streaming and full remote control. Users can capture photos and videos, adjust color palettes, and transfer waypoints to Google Maps. Content can then be easily viewed and shared on social media.

Real-time thermal video streamingRemote control of imager functionsCapture photos and record videos
📷 Photo & Video
(1)
free
11
HIKMICRO Viewer
HIKMICRO Viewer
HIKMICRO Viewer
by Hangzhou Microimage Software Co., Ltd.
Free

Stream live infrared video, analyze thermal images, and generate reports wirelessly from your mobile device. This app allows remote operation of thermal cameras for safe and efficient inspection in challenging environments.

Wireless thermal camera streamingThermal image and video analysisRemote camera control
💼 Business
(19)
free
12
ThermCam
ThermCam
ThermCam
Thermal camera for IOS devices
Free

This app transforms thermal imaging devices into a visual tool for real-time temperature analysis. Capture photos, record videos, and perform professional temperature measurements with advanced editing and reporting features. It's designed for industrial inspections, electrical checks, and vehicle maintenance.

Real-time visual temperature imagingRemote infrared camera controlPhoto and video capture
🔧 Utilities
(1)
free
13
Smart Imager
Smart Imager
Smart Imager
by zhuhai jida huapu instrument co.,Ltd
Free
🔧 Utilities
(0)
14
ANCEL IR
ANCEL IR
ANCEL IR
ANCEL IR
Free
📷 Photo & Video
(0)
15
Vantrue Thermal
Vantrue Thermal
Vantrue Thermal
by Shenzhen Shancai Caifu Management Co.Ltd
Free
🔧 Utilities
(0)
16
Thermal telescope
Thermal telescope
Thermal telescope
by 广权 黄
Free
📷 Photo & Video
(0)
17
Mileseey Thermal
Mileseey Thermal
Mileseey Thermal
迈测红外
Free

This application connects to professional mobile phone thermal sensing cameras to provide thermal imaging capabilities. Users can adjust temperature scales, customize color palettes, and capture images or record videos for various diagnostic purposes.

Thermal imaging functionSeamless connection to thermal imagersTemperature scale adjustment
🔧 Utilities
(0)
free
18
Major Tech Imager-X
Major Tech Imager-X
Major Tech Imager-X
Bluetooth Thermal Measurements
Free
🔧 Utilities
(0)
19
Thermal Link
Thermal Link
Thermal Link
by UNI-TREND TECHNOLOGY (CHINA) CO.,LTD.
Free
🔧 Utilities
(0)
20
Pixfra Sight
Pixfra Sight
Pixfra Sight
by Zhejiang Pixfra Technology Co., LTD
Free
🔧 Utilities
(0)

FAQ about Thermal Imaging Free

What are the best thermal imaging free apps for iPhone?
Flir One tops our thermal imaging free apps ranking as of August 2026, with a 4.6-star average from 7.6K App Store ratings, and it's free to download.
Flir One has no ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 250+ thermal imaging free apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
The FLIR ONE app works with a connected FLIR ONE series thermal camera to turn your smartphone into a thermal imager. It allows you to see heat signatures, capture thermal photos and videos, and analyze temperature data to identify problems like water leaks, electrical issues, or HVAC inefficiencies.
Key features include a live thermal camera view, the ability to capture and save photos/videos, temperature spot measurements, adjustable color palettes, and the option to add text notes. Advanced models offer automatic hot/cold spot tracking and IR scale adjustment. The app also supports cloud uploads for easy sharing and organization.