Reviewed in Apps you wont uninstall
If you know, android makes it compulsory to have one widget on your lockscreen. If you don't use a widget, android replaces the blank area with clock. So what happens if you want a blank lockscreen ? You need a blank widget. That acts like a widget so that android does not put a clock on blank lockscreen and at the same time you don't see anything in this widget..
This is a blank, transparent lockscreen or homescreen widget without any functionality. Use it to fill up pages on your lockscreen or homescreen. A very simple widget that doesn't use up unnecessary resources. To use this, just add 'Blank' from the new widget dialog.