Εδώ η απάντηση δια στόματος jobs:Ωραία όλα αυτά αλλά αν θέλουμε να κλείσουμε εντελώς μια εφαρμογή, πώς θα το κάνουμε
Q: How do you close applications? And can people use stuff other than iAd and Game Center?
A: If you want to kill an app…you don’t have to. We architected something so the user doesn’t have to be the custodian of applications. We’ll give the apps in the foreground as needed. The user doesn’t have to worry about that at all. The user just uses things.
In multitasking, if you see a task manager, they blew it. Users shouldn’t have to ever, ever, ever think about that stuff.
And to answer the second question, yes, you can use any service.