Debug Console for Unity, it allows developer to call any public method in any class, it can show debug log messages on screen, also can send logs via mail.
Works on Android, iOS and PC.
Just touch the screen with four fingers on iOS or Android, or press Tab on PC.
Type command according to this pattern: ClassName.MethodName arg1 arg2 arg3 etc.
If the method is nonstatic it would be called on every active class instance on scene.
Typing log would show debug log messages on screen, typing FPS would show FPS counter.