Easy OTG Checker is a free utility app developed by Kjarvel for Android devices. The app is designed to help users test if their Android device supports USB On-The-Go (OTG). With the help of an OTG cable and any USB device, such as a flash drive, users can easily determine if their device supports USB Host.

The app is straightforward to use, and the interface is clean and easy to navigate. However, it is essential to note that some detection problems may arise from the USB OTG cable. Some cables that claim to support OTG may not work, so it is advisable to try a few cables before giving up. Additionally, some Android devices, like the Samsung S3 Mini, may not deliver power through the USB jack. In such cases, a double-connection USB cable, which allows for connection to a computer or USB charger, may be required.

It is also worth noting that if you connect a mouse or keyboard, it might be detected and handled by the Android device itself. In such cases, OTG support will not be detected by Easy OTG Checker. However, if you see a mouse pointer on the screen when you insert a mouse, USB OTG is supported. The same applies to keyboards; if you can use a keyboard on your Android device, USB OTG works.