Yes, i'm going to fo it only for iOs at first. Later, if it will be intresting i can try to make for Androind.
About frameworks at the moment i dont see any reason to use something external.
Never never heard about Kiv
y.org. Will read for it later
One problem, a can do it only at the weekend but not every weekend, cuz i have a lot of other worries.
But than application will be in a good condition i will try to speak about shares experience with other users bb api.