What's a good Android app for inspecting hard-to-reach places using an external camera?

If you need to peek into tight spots like drains, behind walls, or inside machinery, Endoscope Camera / USB OTG is a solid choice. This Android app allows you to connect a USB endoscope camera to your phone or tablet via USB OTG (On-The-Go). Once connected, the app displays the camera's live feed, turning your Android device into a portable inspection tool. It's particularly useful for home inspectors, plumbers, mechanics, or anyone who needs to see into inaccessible areas. Key features include adjustable resolution, image capture, and video recording, so you can document your findings. Plus, its simple interface makes it easy to use, even if you're not a tech expert. The app supports various USB endoscope models, making it a versatile option for different inspection needs.