Analytics and Tracking Player Retention

This is probably the wrong category, but I’d like to know if there’s any services compatible with Roblox that allow me to see more player analytics than Roblox provides on their Website… I did hear about them testing something with PlayFab, but right now it’s invite-only.
I’d like to have a service that would allow me to track stats like 1-Day, 3-Day, 7-Day, 30-Day (and so on) Player Retention.

I heard of this Integrating the GameAnalytics SDK with Roblox
didn’t try it myself yet tho