game to google developer apk

My son has made a first game with stencyl, we want to upload it to google developer as an apk, so that his friends can download it, I wonder how I can do it, is the stencyl pro version necessary or is it possible with the free version?

tks

No, it is not  possible with the free version of stencyl.
Now what you can do ( I think), is just send the apk created when you test the game  by email, or with a direct link ?