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Best Thermal Imaging Apps

248+ iOS apps curated and reviewed

3.4 avg rating
20 free apps
Updated August 2026

Flir One is the household name in thermal imaging, but it's far from the only option. We track 248+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Thermal Imaging Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Flir OneFlir OneFree4.6★ (7.6K)NoYesAug 2026
2Thermal imagingThermal imagingFree2.0★ (4)NoNoMay 2026
3Thermal & Night Vision CameraThermal & Night Vision CameraFree4.4★ (743)YesYesAug 2026
4Thermal Vision: Filter CameraThermal Vision: Filter CameraFree4.5★ (462)NoYesAug 2026
5Thermal Vision FX Camera :iTVCThermal Vision FX Camera :iTVCFree4.4★ (793)YesNoAug 2026
6Thermal Imaging Camera FiltersThermal Imaging Camera FiltersFree4.3★ (11)NoYesAug 2026
7Thermal imaging telescopeThermal imaging telescopeFree—NoNoMay 2026
8RIDGID ThermalRIDGID ThermalFree1.8★ (128)NoNoMay 2026

Top Picks for Thermal Imaging

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
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 apps to explore

4
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
5
Thermal Vision FX Camera :iTVC
Thermal Vision FX Camera :iTVC
Thermal Vision FX Camera :iTVC
Heat Imaging Filter Effects
Free

Apply real-time thermal-style heat vision filters to your camera feed. Enhance your photos and videos with unique visual effects. Supports standard iOS screen recording for video capture.

Real-time thermal vision filtersLive heat imaging effectsVideo recording via iOS screen recording
📷 Photo & Video
(793)
ad-supported
6
Thermal Imaging Camera Filters
Thermal Imaging Camera Filters
Thermal Imaging Camera Filters
Night Vision Camera Filters UV
Free

Capture stunning photos and locate pets in low light with thermal vision technology. This app enhances visibility in darkness for night photography and pet finding, offering adjustable intensity and instant access to saved moments.

Thermal vision for dark environmentsPet finder functionalityNight photography and video
📷 Photo & Video
(11)
subscription
7
Thermal imaging telescope
Thermal imaging telescope
Thermal imaging telescope
by Software Shop
Free
🔧 Utilities
(0)
8
RIDGID Thermal
RIDGID Thermal
RIDGID Thermal
by The Ridge Tool Company
Free

Connect to Wi-Fi enabled thermal imagers to transfer, analyze, and organize thermal images on your smartphone or tablet. Easily add measurements, annotations, and adjust color palettes before saving and sharing your findings.

Wi-Fi image transferThermal image analysisSpot measurements
📷 Photo & Video
(128)
free
9
ThermoCam Heat & Energy Detect
ThermoCam Heat & Energy Detect
ThermoCam Heat & Energy Detect
Thermal Camera & Night Vision
Free

Transform your device into an advanced thermal camera and infrared imager. Analyze heat distribution, detect temperature differences in darkness, and achieve clearer vision in low-light conditions. Create detailed heat maps and identify hidden heat sources for various practical applications.

Thermal imaging for heat analysisInfrared camera filtersLow-light and night vision modes
🎬 Entertainment
(4)
free
10
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
11
Infrared Thermal Imager
Infrared Thermal Imager
Infrared Thermal Imager
Infrared Thermal Imager
Free

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.

Wide temperature measurement rangePicture and video captureHigh and low temperature tracking
🔧 Utilities
(1)
free
12
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
13
HeatSight
HeatSight
HeatSight
Thermal Camera for ESP32
Free
🔧 Utilities
(0)
14
A18x-19x Imaging
A18x-19x Imaging
A18x-19x Imaging
by Software Shop
Free
🔧 Utilities
(0)
15
Thermal Pro
Thermal Pro
Thermal Pro
by Shenzhen Leagend Optoelectronics Co., Ltd.
Free

This portable thermal imager converts object heat radiation into images and temperature data. It offers high-resolution thermal imaging, real-time temperature measurement, and various display modes. Users can record videos, set alarms, and generate detailed analysis reports.

256x192 pixel infrared resolutionReal-time high-definition thermal imagingTemperature range -20℃ to 550℃
🔧 Utilities
(1)
free
16
Teslong Thermal
Teslong Thermal
Teslong Thermal
by Grus IoT
Free
📷 Photo & Video
(0)
17
Vantrue Thermal
Vantrue Thermal
Vantrue Thermal
by Shenzhen Shancai Caifu Management Co.Ltd
Free
🔧 Utilities
(0)
18
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
19
Winchester Thermal Connect
Winchester Thermal Connect
Winchester Thermal Connect
by Third Bull & Co., The
Free
🔧 Utilities
(0)
20
Thermal TP Series
Thermal TP Series
Thermal TP Series
by MILESEEY TECHNOLOGY (HONG KONG) CO. , LIMITED
Free

This utility app connects to a thermal camera to help users find hidden issues in electrical systems, HVAC, and water damage. It allows for temperature adjustments, color palette customization, and image/video capture.

Connects to TP2 Thermal CameraTroubleshoot electrical panelsPinpoint HVAC failures
🔧 Utilities
(0)
free

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FAQ about Thermal Imaging

What are the best thermal imaging apps for iPhone?
Flir One tops our thermal imaging apps ranking as of August 2026, with a 4.6-star average from 7.6K App Store ratings, and it's free to download.
Yes — 20 of the top thermal imaging apps we rank are free to download, including Flir One and Thermal imaging.
Flir One has no ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 248+ thermal imaging 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.

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