MIDI DrumPad by POP Studio is a free Android application that allows you to connect your phone or tablet to a MIDI device with an OTG cable and turn it into a MIDI drum pad. This app is perfect for musicians, DJs or anyone who wants to create music on the go.

The app has a simple and user-friendly interface that allows you to easily customize the MIDI mapping of the drum pad. You can choose from a wide range of drum kits and sounds, and even import your own sounds to create your own unique drum set. The app also supports multi-touch, so you can play multiple sounds at once and create complex rhythms.

Overall, MIDI DrumPad is a great app for musicians and music enthusiasts who want to turn their Android device into a MIDI drum pad. The app is easy to use, customizable and offers a wide range of features that make it a must-have for anyone who wants to create music on the go.