Windows Lite should be interesting - it says only UWP apps will be supported. MobileSheets is a UWP app, so I should be able to support that without any additional effort. Likewise, Google Fuschia will most likely support Android apps, so I might not have to do much there either. In terms of what platform I plan to support next though, it's iOS. I've gotten a lot of feedback that an iOS version is desired.
Mike
Mike