Regarding the Android question... I suppose it depends on the age of the device. Older Android devices support Flash. Newer Android devices are "somewhat" modeling after iOS are no longer supporting Flash and instead supporting HTML 5. I'm sure there are others that can speak to more possibilities and possible issues.
But to the heart of your question, I am not aware of any effort (or product requirement/request) to enable mobile access for WFA.
My customers would find it most useful to have WFA automation control from a variety of devices. Some only allow or provide IOS based mobile devices, while others allow BYOD including Android. The Adobe Flash interface is a problematic limitation, unless something like NetApp Connect can provide a workaround. The creation and maintenance of native IOS and Android apps would be more resource intensive but would have the best interface for invoking and status of workflows. I don't think the ability to create workflows would be a mobile requirement, now.