So what exactly will this application do? Here's a short list of what this free application will offer.

• Check your trophies
• Compare trophies with friend's
• View your friend's activity
• View recorded and live steamed gameplay
• Edit your PSN profile
• Send/respond to PSN messages
• Send invitations for multiplayer games
• Make purchases from the PS Store
• Start downloading purchases to your PS4 remotely
• Have second screen gameplay for enabled titles

Some fun features, but nothing I couldn't already do with my Vita. If I am able to actually play Watch_Dogs using my phone as Aiden though I will totally be a bit more impressed. Hells, I'll be impressed once developers start using the PS App to allow for cool gameplay features in their games. Until then though I see this as being just an extension to their website for those who don't have a PS Vita yet. I could be wrong though, so we'll see when it hits iOS and Android devices in the coming month.

Source: PlayStation Blog