New App Freesun by Power Electronics for iPhone and iPad. The ultimate Freesun app will play a key role of your Plant Service and Management. Any iOS device will be easily wirelessly connected to the inverter creating a comprehensive and user friendly interface. Forget about using built-in displays with tiny screens and tedious menus, and allow your field technicians to service outdoor units under rain, snow or heavy sunny conditions, without opening or standing in front of the unit..Freesun app is a comprehensive app compatible with iOS devices. This allows the user to monitor the inverter status.