Week #12: Apps for Creative Minds

It is absolutely no doubt that people who works in the design industry are people with creative minds. But sometimes, we need a little nudge to help us explore our inner creativity and a media for us to channel it. These four outstanding apps promised to do just that.
Paper-53
Source: https://www.fiftythree.com Paper by 53
Unstuck
Source: https://www.unstuck.com Unstuck
Brainsparker
Source: http://brainsparker.com Brainsparker
Stefa-Sagmeister
Source: http://assemblyapp.co Assembly