Flir One

Flir One

Thermal Camera for Smartphones

7.6K ratings
368 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • August 4, 2014
  • June 22, 2026

Features

Flir One screenshot #1 for iPhone
Flir One screenshot #2 for iPhone
Flir One screenshot #3 for iPhone
Flir One screenshot #4 for iPhone
Flir One screenshot #5 for iPhone
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About

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.

Thermal camera view
Capture photos and videos
Temperature spot measurements
Color palette selection
Add text notes
Cloud upload and organization
Inspection guides
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What users say

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What's New in Flir One

6.4.12

June 22, 2026

Bug fixes and improvements

Subscription plans

Inspection Guides

Inspection Guides (1 Year)

$29.991 Year
1 Year trial
How to cancel Flir One subscription ⁉️

User reviews

App does not work on iphone 17 pro max.

I plugged in my flir one after fully charging it, held the power button and then waited for it to start flashing green, and it just sat on the stupid screen telling me how to connect. Tried fully uninstalling and reinstalling the app and the same problem. The camera worked fine on my android, so I can only assume it's ios being garbage. Putting 1 star for now, if an update is put out fixing it I'll give a 5 star which is what it would be if it connected.
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Funktioniert nicht

iPhone 15pro, also usb c. Sollte eigentlich funktionieren. Ich stecke das Gerät an, App ist geöffnet und befolge die Anleitung, so wie sie angezeigt wird auf dem Handy. Die LED leuchtet grün, aber in der app springt es nicht auf die thermalsicht um und bleibt die ganze Zeit bei der Anleitung hängen. Bei einem Kollegen mit Android funktionierts problemlos (gleiches Gerät).
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Response from developer

Hallo, vielen Dank für Ihr Feedback. Um Ihnen weiterhelfen zu können, benötigen wir weitere Informationen. Bitte rufen Sie uns unter der Nummer (+1) 805 392 3775 (Option 1) an und/oder melden Sie das Problem unter http://flir.custhelp.com/app/ask mit Angabe des Geräts, des Betriebssystems und der Kamerainformationen. Wir melden uns dann umgehend bei Ihnen.

Useless as you need more than your phone

Installed it less than 2 minutes as you have to buy other equipment and connect to your phones Bluetooth to get it to work

It is not working ob iphone 16 plus

It’s not working

Hi next time

On the front page have the attachment showing cause that would be conviniet

Developer apps

User experience

🐞

Reported Bugs

7 issues

Constantly disconnecting

Bug

App crashes

Bug

Doesn't work with older devices after updates

Bug

Slow refresh rate and high latency

Bug

App requires full photo library access

Bug

Freezes and paralyzes phone

Bug

Crashes on startup

Bug

Requested Features

6 requests

Bring back swiping between thermal and regular images

Feature

Allow locking temperature scale

Feature

Add temperature range display

Feature

Allow setting own emissivity value

Feature

Allow selecting colors on manual temperature scale

Feature

Improve camera alignment adjustability

Feature

FAQ

What does the FLIR ONE app do?

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.

What are the key features of the FLIR ONE app?

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.

Is the FLIR ONE app free to use?

The app itself is free to download and explore. However, to utilize the full thermal imaging capabilities, you need to connect a compatible FLIR ONE series thermal camera. Some advanced features, such as the FLIR ONE Inspection Guides, are available as paid in-app purchases.

What devices is the FLIR ONE app compatible with?

The app is designed to connect with FLIR ONE series thermal cameras, which then attach to your smartphone. You can explore the app's features without the camera attached, but the thermal imaging functionality requires the physical camera accessory. Specific compatibility details for the camera models can be found on the FLIR website.

What are common use cases for the FLIR ONE app?

Common use cases include inspecting electrical panels for overheating components, diagnosing HVAC system failures, finding hidden water damage or insulation gaps in homes, and performing general building inspections. It's also useful for automotive diagnostics and identifying energy loss around windows and doors.