My main goal is to make Android UI testing easier for everybody. In order to achieve it, I've created some libraries & projects.

Own Libraries/Projects
🎨 AndroidUiTestingUtils
📸 Android Screenshot Testing Playground
🔤 FontSizeTestRule

Additionally, I've also been actively contributing to other popular projects & libraries in the Android UI Testing area:

Author/Co-Author
📚 Android UI Testing Cookbook

Contributions to other libraries
☕ Kaspresso

• Features: compatibility with Robolectric
• Bugfixes + documentation + clean up