How to find out how many people have installed the game for ios and for android?

Question

Mobile development

How can I find out the number of installations of the game Hotel silence for android and ios?
Are there creative developers among you who want to make an analogue of 50/50 together with me?
I can write an application in html5 and work on artificial intelligence in a chat.
There are many thoughts and ideas, the only gap is in promotion, publication and graphics, plot.

Answer 1

Sorry, but what else remains besides "promotion, publication, graphics and plot". html5 is of course a serious development platform