We are trying to make an app for the future, thus we need to use the newest available developing tools. Our current support for the demo is:
iOS 10 and newer
Android 6.0 and newer.
When the beta comes out it will be much the same.
We want the app to work perfectly, so we are right now focusing on making that happen.
When the app is out, without (mostly without) bugs and kinks, we can go ahead and have a look
at the backwards compatibility of the app.
For those of you who are not able to run the demo, we are very sorry. For the time being we are trying to figure out a way to get the people with an older phone and unable to run the app for the foreseeable future a way to run it on a desktop or mac. Note: this is NOT the desktop version we will be working on, just a workaround. More on that soon.