i am working on a project that enables a user to have a demo of an application that he is about to download.. something similar to https://www.manymo.com ; but i am struck on ho
One approach can be
This is just a way on how to approach
Create android emulator and install VNC server then use a web based vnc client and embeded it in your server .(most solutions need activex/java enabled browsers).
webased VNC clients to look out for https://novnc.com/info.html
embedding instructions
https://github.com/novnc/noVNC/blob/master/docs/EMBEDDING.md