Easy mask creation with layers (or stacks as the author labels the action.)
I find that the phone needs to be power cycled after a few heavy uses to keep it from crashing. Would prefer more aggressive blur in levels 3 and 4, but performance and stability come at a cost.
Its not quite good enough for me to get excited about paying for the pro app. Fix the stability issues and it becomes a no brainer to pop for the pro version.
J4ZZFAN about Blur.Depth Jr.