If you are like me and constantly wiping and re-installing your phone MyBackup is a great tool. Its free to try for 30 days and only $5 after that. You can backup data and application to your SD card or online. With applications you can backup just the application installed (apk) or the application + data. Including data will allow any application to be restored with any settings or customizations. I highly customize my twitter client twicca with colors and many settings. Being able to restore the app w/ all its settings intact is a huge time saver. You can also manage, view and even schedule backups.