I don't think ApexFusion is an app. just yet, it is only an easy way to check your system remotely. I still use the old Apex app on my phone for all the control. I only use Fusion to check on my system while away from my house. I wasn't able to control my system with Fusion while I was out of the country a few months back; the only thing I could do was just check parameters. For this reason I still use the old Apex moblie app. Has anyone else had this issue if you leave out of the states?
I was able to control from Tarma, Peru with Fusion last month. I find Fusion on my phone a lot faster than the app. For instance if I want to activate a feed cycle for feeding or a water change I just use my phone rather than logging on with my computer.
You have to enable control via Apex Fusion first on the Apex. I forgot how to do it but if your on the home PC, I think it's under the network sub tab.