MockApp is an Android app that allows developers to quickly create mockups of their Android apps. Using MockApp, they can quickly share mockups with their customers, and easily make changes to their UI. It also allows developers to design their UI using the Android design tools, and then quickly share that design with their customers. It's the best tool for quick UI testing.

It's a simple app to use, and it works on all Android devices. You don't need to be a designer, just a developer, and you don't need any special skills. With MockApp, you can create and share mockups with just one line of code.