Google

I’ve recommended many other Google apps before, but recently the one at the center of it all, the search app simply called Google, has been getting a lot of attention because of its superior voice recognition to Siri. While that one feature is impressive, it doesn’t quite replace Siri, which wins because of the variety of things it can do. Still, it is certainly worthwhile having the free Google app on your iPhone as it gives you nice voice web search ability and lots of built-in mini apps like Gmail and Google Calendar clients. You also get Google Goggles, which lets you search by taking a picture of an object.