For the webapp in question, it will hardly apply... It will be my WebCV... So showing to the friend beside you will be very uncommon... Moreover, i intend to share my app using a at code... So, at best, you would simply need to either show the we code to your friend so that he can open the webapp in his device, or share the direct link...
I will consider your suggestion, thou...
At the end, it is a matter of screen real-estate.... I might implement an action button for it...