Ask HN: Would you use a prediction market mobile app

I want to develop a mobile app for prediction markets, which allows users to predict outcome of events, e.g. Will Life of Pi win "Best movie" Academy award.

Before developing I want to know if there is enough demand for such an application. Would you use such an app if it is available in the market right now.

There is a popular prediction market sit e called InTrade, which is recently banned in US because it allows users to predict using real money