Installable applications are much easier for many people to pay for. This isn't limited to things that run on smartphones: Games that are installable are an ea

Installable applications are much easier for many people to pay for. This isn't limited to things that run on smartphones: Games that are installable are an easier sell than network games. In some ways, they SHOULD be easier to pay for, as they have a chance of sticking around and at least partially working if the company goes belly up.