It took me awhile to get a handle on TelemetryDeck but once I did I started discovering all sort of new things about my app to improve that other services never surfaced to me. It's easy to setup and I finally have dashboards for monitoring the health of my game, and discovering where people drop off etc. It definitely is a bit underdeveloped but I find it so much more useable (not to mention privacy conscientious) and am therefore learning way more about my app than I ever did using other services. The best part is whenever I run into issues the founders are extremely attentive to feedback and workaround while they build out the service.

TD is super easy to set up, light-weight, privacy focused, and the dashboard is super insightful and configurable. They add a bunch of useful charts automatically (you don't even need to log anything to get things like acquisition, retention, device and system version pie charts, etc), and you can add your own custom dashboards in seconds. I would never consider going to another analytics provider for mobile apps. Lisa and Daniel are always an email away, and solve any problems I have in a matter of days.

It's so easy to set up, and about 90% of the value just comes from the pre-generated charts and recommendations. Really quick and fun and helpful!