If you have wiped all the data from your device or accidentally uninstalled an application that you wanted to keep, redownloading your purchased applications is a painless process. You won’t have to repurchase the app.
1. Open the Market application.
2. Select the Menu key.
3. Select Downloads.
4. Scroll down the list and locate the desired application. It will be tagged as Purchased.
5. Select the app and install normally. You will not be charged for the application again.
