Thermal Cameras Guide
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Therm-App

Therm-App Thermal Camera for Android: In-Depth Review

Therm-App is a compact thermal camera that connects to your Android smartphone.

Unlike other smartphone thermal cameras like FLIR One and Seek Thermal Compact that is meant for beginners, Therm-App is a professional-grade thermal camera.

It matches the resolution, thermal sensitivity, and detection capability of high-end thermal cameras. You can even switch between various lenses depending on your imaging needs.

Therm-App is made by Opgal, an Israeli company that started in 1983. Opgal currently sells four iterations of the camera.

  • The basic Therm-App camera.
  • Therm-App Hz for safety, security, and various outdoor applications.
  • Therm-App TH designed specifically for thermography.
  • Therm-App 640 Pro for professionals who want a high-performance smartphone thermal camera.

Note: Therm-App cameras only work with Android devices that support USB OTG (On the Go). Here’s a list of compatible models that the manufacturer has tested. As long as your phone has Android 4.1 or higher and supports OTG, it’ll work with Therm-App. 

Read on for our reviews of each thermal camera.

If you are looking for something cheaper for a beginner, see our reviews of the best thermal cameras for the smartphone

Applications

  • Security
  • Hunting
  • Thermography
  • Night vision
  • Systems maintenance
  • Structural inspections
  • Fire fighting

Therm-App Basic

Therm-App Thermal Camera

This is their most popular offering. It’s also the cheapest with prices starting at $999. It’s a great choice for those looking for an entry-level professional thermal camera for a smartphone.

You can order it along with a 6.8mm, 13mm, or 35mm lens.

Imaging Capability 

The basic Therm-App camera has two image processing modes: basic thermography and a high-resolution day or night imaging.

The thermography mode maps colors between 5°C and 90°C. You can share your photos directly from your smartphone.

The day/night imaging mode detects temperature differences as small as 0.07°C.

The 19mm lens (an optional upgrade), lets you detect a human up to a range of 1,600 feet. The 35mm lens gives you even more range outdoors.

The 384 x 288 pixels thermal detector captures plenty of detail; enough to reach out people and even small animals at a long distance.

The 9hz (9 frames per second) camera frame rate is a bit basic, but it works well in most situations. If your work involves fast-moving objects, we recommend the Therm-App Hz camera. It has a higher frame rate.

Ease of Use 

Once you download the Therm-App app, you are ready to go. Just attach the camera to your smartphone and connect both using the included USB cable.

The camera also comes with a comfortable handle to make it easier to point the camera towards various objects.

If you don’t want to keep holding the camera, you can set it up on a tripod that is available separately.

Pros

  • Interchangeable lenses.
  • High-resolution thermal imaging.
  • Basic thermography.
  • Long-range detection.

Cons

  • The 9hz frame rate is not suited to observing fast-moving people or objects.

Specifications

  • Resolution: 384 x 288 pixels
  • Range: approx. 1,600 feet (19mm lens)
  • Thermal sensitivity: <0.07°C
  • Frame rate: 9Hz

Therm-App 25 Hz

Therm-App 25 Hz

The 25 Hz frame rate Therm-App camera is designed for a wide range of outdoor applications, including hunting, security, and wildlife observations.

Imaging Capability 

Therm-App Hz has the same detector resolution as Therm-App Basic. What it improves on is the frame rate.

It’s capable of shooting up to 25 frames per second, which results in a smooth video without the choppy motions you get with the 9Hz camera.

If you take a lot of thermal videos or observe fast-moving objects, the 25Hz camera is worth the extra money.

With the 19mm lens, it can detect objects clearly up to 500 yards out. The 35mm lens increases that range to about 900 yards.

Ease of Use 

Therm-App Hz easily attaches to your phone and connects to it with a 5v USB cable.

Once you’ve set it up, you can take images and videos and share them right from the app. You can even stream a live thermal image.

The camera comes with an ergonomic handle, and you can order a tripod separately.

Pros

  • Great for imaging moving people, animals, and objects.
  • High-resolution thermal imaging.
  • Compact and easily portable.
  • Streaming capability.
  • Long-range detection.

Cons

  • Image definition suffers at longer ranges.
  • Detector resolution is not high enough for certain sensitive professional applications.

Specifications

  • Resolution: 384 x 288 pixels
  • Range: approx. 1,600 feet (19mm lens)
  • Thermal sensitivity: <0.07°C
  • Frame rate: 25Hz

Therm-App 640 PRO

Therm-App 640 PRO

The 640 Pro delivers the best performance. It’s designed to provide the best imaging capability for professionals in various fields.

Imaging Capability 

The 640 Pro has the highest detector resolution of all four Therm-App cameras: 640 x 480 pixels. It also has the best thermal sensitivity: 0.03°C.

It captures plenty of detail and delivers well-defined thermal images from a distance. With the 19mm lens, it can detect human-sized objects at 1,000 yards and bigger objects such as cars at 3,200 yards.

Whether you are looking for a leak or you are out hunting, Therm-App 640 Pro is perfect for your needs.

If you want even more out of it, order the 35mm lens.

The camera has a 25Hz refresh rate, making it ideal for observing moving targets.

Ease of Use 

Similar to the other cameras, Therm-App 640 Pro easily connects to your phone for easy portability and on-field observations.

Through the app, you can select different color palettes and take advantage of the digital zoom feature to get close up images of whatever you are looking at.

It also offers manual focus using a ring.

You can take videos and images and share them on your phone.

Pros

  • Professional-grade imaging.
  • Ultra-high resolution thermal images.
  • High refresh rate.
  • Interchangeable lenses.
  • Long-range detection.

Cons

  • Expensive.

Specifications

  • Resolution: 640 x 480 pixels
  • Range: approx. 1,000 yards (19mm lens)
  • Thermal sensitivity: <0.03°C
  • Frame rate: 25Hz

Therm-App TH

Therm-App TH is designed specifically for thermography. It’s ideal for professionals who need a portable thermal camera to take thermal images and share them instantly with team members or clients.

Imaging Capability 

The 384 x 288 microbolometer detector is large enough to meet the needs of most professionals.

The photos are highly detailed, with the 0.07°C thermal sensitivity providing excellent definition between different temperatures.

The 9Hz frame rate could be better, but it’s good enough for most pros since they are not imaging moving objects.

The camera works great for both indoor and outdoor readings. When outdoors, it provides a range of up to 1,000 feet.

Ease of Use 

Therm-App Thermal Camera

Once you download the app and connect the camera to your phone, you are ready to take some images.

The camera offers manual focus. For digital zooming, use the touchscreen on your smartphone.

All images are stored in your Smartphone gallery, and you can share them directly via Dropbox, email, and various other means.

You can also record videos and live streams.

The app has many other pro features, including palette selection (6 options), manual & auto temperature scale, and various measurement tools.

Pros

  • Great for professional thermography.
  • Instant image sharing.
  • Live streaming.
  • Easy to use.
  • High-resolution thermography.

Cons

  • Not ideal for observing moving objects due to the low frame rate.
  • It takes some time to learn how to use the camera.

Specifications

  • Resolution: 384 x 288 pixels
  • Range: approx. 1,000 feet
  • Thermal sensitivity: <0.07°C
  • Frame rate: 9Hz

About the Author Rob Carson

I work in commercial construction, in Dallas, TX.

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