VirtualTablet Lite (S-Pen) is a free Android application developed by SunnysideSoft that allows you to turn your tablet device into a wireless digitizer. With this app, you can draw on your PC with pressure sensitivity using a stylus pen or your fingers. To use this app, you need to download and run the VirtualTablet server program on your PC, which is available for both Windows and Mac.

The app supports USB, Bluetooth, and WiFi connection modes, left/right-handed mode, and tablet size adjustment. It also supports all input modes of S-Pen like stylus (in-range hover movement, barrel button, eraser tip, and etc.), and drawing with finger or capacitive stylus as well. The app automatically discovers the server in the same WiFi network. You can draw with your stylus pen on canvas of any graphics applications in your PC, remotely control your PC with stylus pen or finger (same as remote mouse) and make a handwriting annotation on your PC's PDF viewer.

Overall, VirtualTablet Lite (S-Pen) is a great app for those who want to draw or control their PC remotely. Please note that the app is ad-supported, and you can buy the full version of VirtualTablet with no ads in the store.