Use the iAppTipps reminder to get notifications for price changes of any iOS or Mac-app you want!
Just enter your mail, the iTunes-URL of the app you want to add, select your store (country) and click the button. You will automatically get notified by mail as soon as the price of your given App decreases. If you enter a minimum price, you will only be notified if the price drops below your given minimum price.
If you have any questions, feel free to contact us: support [at] iapptipps [dot] de