Turn your iPhone® into a professional thermal camera for troubleshooting and inspection, using this app with a FLIR ONE® Thermal Camera attachment.

Note: This app requires the FLIR ONE Thermal Camera connected to your smartphone in order for you to see the thermal camera view, but feel free to explore the app without the device attached. For more information, visit

Whether you need to inspect electrical panels, find the source of HVAC failures, or discover hidden water damage, FLIR ONE offers the features you need to find problems faster and get more work done in less time. With advanced image enhancement features such as FLIR MSX® and FLIR VividIR™, the FLIR ONE provides best-in-class thermal imagery for smartphones that ensures you can detect problems with precision. The revolutionary OneFit™ adjustable height connector ensures that your FLIR ONE will fit your smartphone or tablet, even with a protective case on.

Key FLIR ONE App features:
• Scan for faults with the thermal camera view and capture photos and videos to your gallery
• Troubleshoot efficiently with automatic tracking of the hottest and coldest spot (Pro Series only)
• Choose between a variety of color palettes for best visualization
• Analyze faults with temperature spot measurements
• Adjust the IR scale to highlight the problem (Pro Series only)
• Add text notes to photos to document your findings
• Easily share your findings with clients and colleagues

For additional application ideas and news, or to share your day-to-day discoveries, follow FLIR on social media channels at,,, and

What’s New

Version 4.2.0

iOS 4.2.0
Ability to edit MSX alignment for photos in the gallery
Displaying the phone’s status bar
Ability to dismiss image preview with swipe down
Stability improvements & bugs fixes

Compatibility note: With the 4.0 app releases and onwards, we have made necessary upgrades to the backend that handles the communication with the FLIR ONE thermal cameras (hardware). App releases from 4.0 and onwards are optimized for FLIR ONE Gen 3, FLIR ONE Pro LT and FLIR ONE Pro. The new releases have also been tested to verify compatibility with FLIR ONE Gen 2 cameras, however we have discovered that there is an increased risk of compatibility issues. If you own a Gen 1 or Gen 2 camera we recommend you turn off automatic updates for the FLIR ONE app and remain on the FLIR ONE app version you currently have, although there is no guarantee your current version will continue to work. For more compatibility information, please visit or contact customer support at

Ratings and Reviews

4.2 out of 5
127 Ratings

127 Ratings

geko7844youtube ,

Awesome, but...

Awesome app and device and truly shows thermal imaging. However the camera is so sensitive that even the slightest of temperature differences shows up. For example the heating pipes under our floor boards show up red/white, even though they're actually pretty much cold. So it's hard to gauge actually how hot the thing your pointing the camera at is. Also, I'm not sure about the outside uses - in an urban area, the camera picks up the heat bouncing around the buildings, and so shows them up as red, so at night, I pointed it at some people walking along the road, and it didn't show them - seems to only work at relatively short range when other heat factors are involved. As for places like the Forrest, I couldn't really comment, but I assume it'll be a similar result.

KeefieP ,

Does not work with older One cameras

I can’t believe that a company like FLIR would release this update rendering older One cameras totally useless with no way of going back to a working version. I’d advise NOT to buy a FLIR product unless you are willing to accept that they will render your expensive purchase useless after a few years.

Nonnu ,

Camera is now a useless lump

WARNING: Don’t update if you have an older camera, unless you need an expensive FLIR One paperweight. My camera is now useless. How this can be termed an update when it clearly renders older hardware useless is quite beyond me; a big software release NO NO.
Please, please, please, please, please sort this out FLIR 😡

App Privacy

The developer, FLIR Systems, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • User Content
  • Usage Data
  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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