" The closed garden of Apple world, iTunes App store".
Give it a rest !
Just believe me when I say you're making mountains out of molehills on that. Its a myth, a misunderstanding.
Anybody can write Apps an put them up on the App store. Its not a closed garden.
And when you take a minute to bother to understand the security architecture of the iPhone/iPad devices, you will understand and appreciate why Apple hosts software on the App Store !
Don't go bashing the competition unless you have a thorough technical understanding of what you're talking about !