I have seen many (and I mean MANY) exciting projects come and go, but I do believe that IOU is here to stay because there are no "obvious" flows to the whole thing, you might as well call it "perfect"
I saw several projects with a similar algorithm too. But same it is even good. All of them supplement each other and I think IOU too it will appear in this list.
Right there are several projects wih the same features.l but it doesn't matter as long the team will work hard to make it different or shall we say developed more. It just a matter of creativity, good ideas and strategy that the team will do to have a successful result.