I recently pur­chased an iPhone 3G and so far it’s been a plea­sure. As you all know it’s a phone/iPod/internet/email device so I won’t dwell on those fea­tures. I would like to point out a cou­ple of Apps that have incred­i­bly use­ful functionality.

Sim­plify Media is a free app for the iPhone that allows you to stream your entire iTunes library over WiFi, 3G, or even EDGE. You need an account with Sim­plify and the desk­top ver­sion of the soft­ware (both of which are free) and you’re ready to take your full music cat­a­log almost any­where you get cell phone cov­er­age. So far I’ve only used it over WiFi and 3G but it was quite quick even while in a mov­ing car!

AirMe is another free app that uses the iPhones built-in 2 MegaPixel cam­era to snap a photo, geo-tag it, and upload it imme­di­ately to flickr or Face­book. I’ve been using this quite a bit and it works flaw­lessly. It’s really great for cap­tur­ing the moment when I don’t want to lug my Rebel around.

Things is a pro­duc­tiv­ity app for keep­ing track of, well, things. It allows you to put objec­tives into Projects, ongo­ing Areas, or just a gen­eral ToDo list. I won’t go into all the fea­tures (too many to explain here) as their web­site pro­vides an ample descrip­tion. Avail­able for the desk­top as well and has a nice WiFi sync capability.

I hadn’t heard about any of these apps before I got my iPhone a week ago and it was a pleas­ant sur­prise to get all this addi­tional func­tion­al­ity for free. I’d love to hear about the apps that you’ve found useful.