I want to add the ability of tracking the usage of my app (time spent, retention rates, conversion rates, A/B testing, etc). I do not want to include code that I do not understand or that is not open.
My needs are very simple. I just need to send integers, strings, dates, bools, or arrays and dictionaries of these. I would like to encrypt the data in transit, so that middlemen cannot “read” the data even if they intercept it.
I have a website for the app, running on WordPress. As of now, I know Swift and am willing to learn enough of another language to be able to accomplish this. Where do I get started? What do I need to know?