[rebootthesystem]

Well, the most important thing you gain from moving your apps to the web is owning the relationship with your users. And that is HUGE.

With the Apple iOS App Store you are isolated from your users, it is very difficult and nearly impossible to build a list and keep in touch with them in a meaningful way. I am sure there are cases where this isn't true, but I think I can say this is probably the case for the vast majority of apps out there.

By being on the web it is your business, your platform and your users. Not Apple's (or whoever).

And, yes, depending on your niche, building an audience could be very difficult. Guess what? The vast majority of apps on the app store fail. I think we might actually be able to say success on the web might actually be easier.