I recently downloaded the Tiger Woods GolfShot app for iPhone 4. It’s available for the Android Market too.
Tiger Wood’s GolfShot iPhone app In a word, awesome!
If you’re not familiar with the app, it features videos of Tiger’s swing from the side and behind. For each club! And, you can film your own swing and compare to his side-by-side. It isn’t pretty. But it’s informational. At $14.95 it’s a bargain and it can be used over and over again. I’d heartily recommend it.
More info here
Another app worthy to download is ViewTi Golf GPS. I got the free version and it’s very good. It can be used at nearly every course in the U.S. and some overseas. The courses reviewed on SandersonGolf.com are included. It is a true golf course GPS and provides detailed information. You can do worse by purchasing a stand alone golf GPS unit and ViewTi is a lot more friendly on your budget!