Help to know if it's something good

[bertrand]

Hi everybody,
I was checking on internet some new apps for my iphone and I found on youtube a apps who looks pretty good but I would like to have the advice of some people who can tell me if it's really good because I'm fed up to spend money for bad apps :/.. as I'm enable to put the link go on youtube and check for new iphone apps navy patrol: coastal defense
I will appreciate your help

Bertrand