Borescope ET16

3.0
584 reviews
Content rating
Everyone
100K+
Downloads
Content rating
Everyone
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About this app

Klein Tools ET16 Borescope features a 9 mm camera surrounded by 6 LEDs attached to a 10-Foot (3 m) armored gooseneck cable. The digital camera has a USB Type-C (and micro-USB) connection for most Android® (OTG 4.0 or higher) smartphones and devices. The camera and video output is displayed on the Android® device using the free Klein Tools ET16 Borescope App. The ET16 does not require batteries; it is powered by a device connection.
Updated on
Oct 24, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

2.9
549 reviews
Matthew Kastor
May 23, 2026
The camera works but there are no image quality controls at all. The exposure levels are too low for photographing void spaces behind knee walls and such. In a room with a lamp on I can take a photo and have enough detail to see several feet away. I turn off the lamp and take a photo with just the camera lights and all I get are nearly black silhouettes of things I can clearly see. It's like wearing a welding mask for every photo. I'm trying to find walled over access doors and safety issues.
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Daxx Axx
June 20, 2024
Not bad, ran into a little problem when I had the scope plugged in first and the app not picking it up. All I did was unplug it, then plug it back into the phone with the app already open. Connected right up and was good to go! There may be a manual that originally came with it that probably tells you that, we bought it at a garage sale for like $20. But it's not needed, just download the app and plug it in, and your good to go. Minimal knowledge or experience to use.
4 people found this review helpful
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Lance B
July 8, 2024
No Longer Works! I am using a fully updated Samsung Galaxy S23+. The app has been updated, un-installed, re-installed, and all permissions have been given. This app and borescope worked about a year ago when I used it last, but not anymore. When I try to click the record button, an error message appears saying "No ET16 Connected". When I try to modify the USB connection settings, the control will not switch control modes. Still waiting for support to get back to me.
24 people found this review helpful
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What’s new


After the user declines camera access, the app shows a prompt that it is required and will lock the user out of the app.
If the user closes or reopens the app, it prompts the user again to accept access, if it is declined, the same warning is shown.
The user then will need to go to settings > apps > ET16 and allow camera access