During the design phase of your project, you will want to test your app periodically to check for bugs and see how it looks and behaves from a user's perspective. You can do this at any time by selecting one of the Run commands from the Project menu. When running in test mode, you will be able to preview page transition effects, sounds, dialog boxes and see how buttons and other interactive objects behave – just as a user would see them. This provides you with the opportunity to find mistakes and make any necessary adjustments before sharing your app with the world.

The Run (from start) and Run (from current page) options will lauch your app in VisualNEO Web's built-in Run Simulator. The simulator provides a way to quickly preview and test apps without leaving the VisualNEO Web environment. The simulator includes a Debugger tool that allows you to monitor the status of variables and watch action commands as they are executed. The simulator also allows you to temporarily change the app's size and orientation so you can see how it will look on different devices with different screen dimentions.

There are times when you will want to see how your app performs in other browsers. The Project menu's Run in Web Browser command allows you to test your app in other browsers like Chrome, Firefox, Opera, Edge and Internet Explorer - provided you have them installed on your PC. It always a good idea to test your apps on any browsers, platforms and devices where it is likely to be used. Browsers, phones and tablets often have different capabilities and quirks that cannot be simulated except on the actual device.

 If you don't see other browsers listed under the 'Run in Web Browser' menu, you will need to go to the browser publisher's website and download the appropriate software. For example, the Chrome browser can be download from Google's website here.