A free program for Android, by 4DSoftTech.

Whiteboard – Draw Paint Doodle is a handy tool that lets you use your phone to create an instant whiteboard. Just launch the app, choose the mode you want to use, and start sharing your ideas. You can use it to discuss a plan, design a new product, paint a picture, draw a map or even create a new recipe. It’s the perfect tool for anyone who needs to have a free, instant whiteboard in their pocket.

The app has three modes. The first one is the standard mode, where you can use your phone to draw on a blank whiteboard. The second one is the kid’s mode, where you can use the app to draw on a blank whiteboard with a kid-friendly interface. Each mode has its own set of tools. You can use the pen to write, the pencil to draw, the eraser to erase, the color to change the color, the background to draw on, the thickness to change the thickness, and the transparency to change the transparency. The third one is the doodle desk. 

You can use the app to draw, design, write, and discuss your ideas on the go. The app is the perfect tool for anyone who needs to have a free, instant whiteboard in their pocket.