I don't know about Parse, but Flurry and GA track on an aggregate basis, not user basis. Mixpanel (or KISSMetrics) are good solutions to track data per user basis and a lot more in-depth tracking. Flurry tracks retention, but it is not very extensive. I don't think GA tracks retention. Mixpanel does a good job of looking at retention metrics and deep dive.

Mixpanel can certainly be a lot better in data visualization/reporting features and pricing.