The word "native" jumped out at me. I wonder, for the target users you are aiming, if it's enough to say "...an iPhone app...". To me, it's the same feeling as

The word "native" jumped out at me. I wonder, for the target users you are aiming, if it's enough to say "...an iPhone app...". To me, it's the same feeling as "to kill a running app". It's common for tech people to say but doesn't have personal touch.