For iOS there is a short term fix, or rather workaround, based on the altstore/sideloadly approach.

And there is the long term solution, to enable surfacing such good quality apps (with right incentives) that iOS users will end up leaving it. 

 Does iOS allow side loading without jailbreaking? 

 It's a pain, but yes  

 Can you point me to documentation. As someone who would root and jailbreak phones I'm insanely curious at the moment.  

 Check out how altstore works 

 Graci senor