It will show grid overlay over whole system which helps you to verify your excellent app design.

What is the grid good for? ● makes adhering to Android Design Guidelines - "Metrics and Grids" easy ● your app will look aesthetically pleasing ● designers use grid to create designs, use this app to verify design implementation

Customization in settings ● Grid size in dp (default is 8dp) ● Grid color and transparency ● Full screen mode (if the grid should start on the very top of the screen)

Why 'Wichterle'?Otto Wichterle was a famous Czech inventor, best known for his invention of contact lenses. You can see more details with contact lenses, just like with this app. You won't miss any misaligned views in your app.

Documentation & code: https://github.com/inmite/android-grid-wichterle