Yahoo's iPhone app consolidates everything you need from the group: news, mail, messenger, video, etc. With its new voice search function, Yahoo's app is now almost exactly like Google's, so the choice to download one or the other is now a question of brand loyalty and where your Web e-mail address is hosted.

The upgrade comes in the shadow of Yahoo's decision to . The company decided to focus its efforts on the iPhone and the mobile Web browser experience rather than crafting all-in-one apps for individual smartphones.