I am upgrading my phone at the end of this month and I am leaning towards the iphone 4 because it is free. I have heard that there are a lot of cool apps on it that are not on the android market. I am really interested in featurepoints which although it is available on the android market, it won't open on my phone. I am also interested in the field agent app. Are there any apps on the iphone that you love? And apps that you could not live without?