Of course you can, but as with every venture, nothing's guaranteed. Just look at the Android app store to get some idea of this. The download volume and price i

Of course you can, but as with every venture, nothing's guaranteed. Just look at the Android app store to get some idea of this. The download volume and price is shown. Multiply them together, take out Googl's cut, and what you get is the revenue that the app has made over it's lifetime. Will every niche make substantial money? Doubtful.