A free program for Android, by Isha App Developer.

Access and manage files in external storage through your Android device effortlessly with the OTG USB Driver For Android mobile application. It is a quick way to read and launch any attached OTG tool to your smartphone. You will love the highly intuitive and easy-to-navigate user interface, as you will never lose track of whatever it is you are doing.

The app supports a wide array of file types as well as OTG device variations. It can also read video files and lets you view any hidden settings.

Moreover, the app notifies you whenever an OTG device is attached or ejected from your smartphone.