I just recommended App Shopper in another thread but thought I would give it it's own thread. Basically it's a free app for the iPhone that lists apps that have price drops and apps that are given away for free periods. You can search for apps or browse through categories for specific apps and it will show you if there is a price drop or change. What I love about it most is that if you find a cool app you can add it to your "wish list" and it will notify you when there is a drop. For example, I found a nice voice memo app that was fairly pricey. I added to my wish list and forgot about it. A few weeks later they were giving it away for free, I got a push notification and my app for free. If you aren't in a hurry to get a particular app and can wait or if you want to search through free apps then you will love App Shopper.
