Thermal Camera for Smartphones

FLIR Systems

    • 4.6 • 1.3K Ratings
    • Free



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 4.4.0

Added the ability to update the camera's firmware. New firmware versions will be rolled out periodically.
Stability improvements & bugs fixes.

Ratings and Reviews

4.6 out of 5
1.3K Ratings

1.3K Ratings

ImInOhio ,

Flir one is an incredible tool

This update is a great improvement over the previous major version. The auto ranging now gives a much more contrasty image without having to move it over to FLIR tools, and I don’t know what the secret sauce is behind the image stacking or whatever FLIR is doing to improve image sharpness but it too seems better. Now, if FLIR would offer some sort of battery replacement program for my FLIR One Pro, I could enjoy this for more than a couple minutes at a time.

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.

Vyrox ,

Missing Features for FLIR One Gen 3 ?

I purchased the FLIR One Gen 3 to use with this app after reviewing a digital manual of the device which included very important features for IR Scale and Lock Span. Neither of these features seem to be available for this device when using the app, even though the manual clearly mentions them for the non-pro device. Am I missing something? The device seems great but requires the app to use it and from what I can see, this app is extremely limited in capability, which really downgrades the user experience. Without these critical features, I wouldn’t recommend the product and might suggest look at other brands.
Added detail: I reached out to FLIR technical support shortly after the original comment here (4 months ago) and did receive feedback - but was not helpful. I was basically blown off and told IR Scale and Lock Span were no longer available on this device. It would be one thing if the device hardware limited these features, but that is not the case here. This is obviously a deliberate attempt to limit user experience on lower cost units in the hopes to drive more sales on higher priced devices. If you are going to do something like this, do it from the start and don’t remove functionality after it was previously available. That’s pretty low. And please don’t provide a canned response that “you’ll look into it and review” when there is clearly no intention do so.

Developer Response ,

Thank you for the feedback. We will definitely forward this comment to the relevant team internally for review. 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.

Jay Cagey ,

Latest version breaks device

The new version of the app is incompatible with my gen1 device. FLIR’s solution? Turn off auto updates and don’t update the app. Except those who have auto updates enabled will have already received the newer version. Brilliant!

They could have released a separate app for their newer devices or a legacy app for their older ones. But no, if I managed to find out about this problem before receiving the update then they think it’s best that I forever manually update all my apps. And not with taking “Update all”. No, I get to tap “Update” next to each of the dozens of app updates I get — and that I should do this on every one of my devices. To add insult to injury, when people complain about this in the reviews, they just respond with a generic “please call tech-support” message — as if that would get us a solution other than the idiotic one they’re forcing on us. FLIR has revealed itself to be both lazy and incompetent.

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.

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 Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Contact Info
  • User Content
  • Identifiers
  • Usage Data

Data Not Linked to You

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

  • User Content
  • Usage Data
  • Diagnostics

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

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