We provide you a real time preview of your app in your MobiRoller dashboard. You can test your app and see how it looks. In addition, we MobiRoller has made an app for this purpose called MobiRoller preview. Find this app in the app stores and download it. Using your MobiRoller username and password you could start testing your app with this tool as well. Here is a link to this app on Google Play Store.