This app together with a FLIR ONE® hardware device turns your iPhone into a thermal camera.

Note: This app requires the FLIR ONE hardware device to stream thermal images, but feel free to explore the app without it. For more information on the FLIR ONE, visit

The FLIR ONE thermal camera gives you the power to identify heat sources that are invisible to the naked eye. Whether you need to inspect electrical panels, find the source of HVAC failures, or discover hidden water damage, FLIR ONE Pro cameras offer the outstanding thermal resolution you need to help you finish the job fast. Identify problems quickly, ensure you repaired them correctly and demonstrate that they have been repaired. Enhanced resolution, enabled through VividIRTM, and features such as temperature measurement tools, level/span controls, and high temperature range (up to 400°C for the FLIR ONE Pro) make troubleshooting easier and more accurate.

All FLIR ONE models include advanced image processing through FLIR MSX® technology, which adds finer details and perspective to images. The revolutionary OneFit™ adjustable-height connector ensures that your FLIR ONE device will fit your phone or tablet, even when it’s in a compatible protective case.

The FLIR ONE App provides a simple user interface with a variety of functions for operating your FLIR ONE device. Add spot measurements, change color palettes, and adjust live settings using the App tools. Capture your thermal images and videos, and share them with customers, friends or social media.

Connect with the FLIR ONE at,,, and

What’s New

Version 3.2.8

- Stability improvements
- Improved language translations

Ratings and Reviews

2.3 out of 5
255 Ratings

255 Ratings

A.Duck ,

Unreadable numerics

First, the hardware is really quite good and the app as a whole is well-done. However, the font used to show a measurement spot is almost unreadable against lighter colors and this makes it very disappointing for trying to measure things. The font size is large enough but it needs more of a shadow outline or thicker stroke or something and the transparency should be removed. Another issue is there are very few options for emissivity and no way to set it correctly for human skin as you can with other thermal cameras. It would also be nice to be able to set a temperature threshold instead of only having the "hottest" LUT which varies, 36.3 C with skin emissivity set would be incredibly super relevant right now for obvious reasons.

Developer Response ,

I understand the situation A.Duck. We will definitely forward this comment to the relevant team internally for review. We appreciate your understanding. Remember that the FLIR ONE cameras were not designed or approved for that task. Remember that you can count on us, if in case of further assistance do not hesitate to reach us out to +1 (866) 477 - 3687, Opt 3 or submit a ticket to and we will reach you.

HeLookLikeAhMe ,

Bricked my Gen 1 Flir One Camera

Well it pains me to write this, I originally bought the gen 1 for my iPhone 5 and had no problems to this day with the hardware. As for the software that’s a different story After Flir updated the app requiring user accounts and constant internet connection my camera has not worked right ever since. The last few updates my phone gives me the constant error stating “this phone model is not supported” sometimes my phone would recognize the camera unit sometimes not. I eventually tried tethering my gen 1 to my newer iPhone 6 using a lighting cable extender with the same results regardless of which phone I used. Now with the latest update my gen 1 no longer works at all. With my old 5 giving all kinds of error messages it wasn’t giving out before. Flir used to be the best in the market for thermal cams and the Flir One was major step in thermal innovation but is now a $250 dollar plastic paper wight. No logical reason to stop supporting legacy devices unless it to force consumers into buying new units every other year which I’m sorry I won’t do. This is more of a disappointment then a rant, solid product that was abandoned before its time.....

Developer Response ,

We are sorry to hear that the app does not work properly and we appreciate the feedback. In order to look into this we would need more details about it. Would you please give us a call to the number +1 (866) 477 - 3687 opt 3, and/or please report the problem at with the device, and a representative will reach you.

Susapix ,

So far so good

I have the third generation Flir One, just the regular one, not the Pro. I connected it to both my iPhone and my iPad with no problem. I am on OS12 for both devices.

I updated the firmware of the FLir One first thing. I do not allow location services and I have never created an account or (of course) logged in. App doesn’t seem to mind and works as advertised.

Angle of view is small and resolution is not great, though I would say the images taken with the iPad are perhaps better than those taken with the iPhone so maybe it’s not the fault of the device. But in either case the images are perfectly readable and very informative. Looks to be a useful tool. I will update this review if warranted. I bought this device for a specific project and I am just learning how to use it.

Developer Response ,

Thanks for your comments! Glad to hear that everything is working fine. Remember that you can count on us, if in case of further assistance do not hesitate to reach us out to +1 (866) 477 - 3687, Opt 3 or submit a ticket to and we will reach you.

App Privacy

The developer, FLIR Systems, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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