On their website, Flightsim Apps have released their version 5.5 update to their Remote Overhead product. The developer states that the product “adds a whole new dimension to the Remote Overhead..”. The product is available for the PMDG 777, and that it will work as a web app on a tablet/mobile device.
The update is available right now from the Flightsim Apps website. A free trial is available to test the product. The Remove Overhead Client costs 15 Euros, though the Remote CDU and EFB cost 10 Euros which will cover a single addon. You can purchase the product through the server app (SimServer).