Apple's rules around the App Store make it impossible to have the full app in the App Store, so making it unappealing to developers who, if they use the App Store, have to supply a cut down version with the option to get the full functionality via an additional direct download. I also don't really get the assertion that App Store apps are safer - rather their functionality is resticted.I just don’t understand why making it so difficult or unappealing to buy it in the App Store