I am not a dev and we are investors in Apsalar so I am already biased, but our reference calls with Devs made us comfortable investing as they had tested Apsalar's product vs others and gave many compelling reasons why they were choosing the Apsalar platform. I think this Quora post does a great job of comparing mobile analytics platforms for iOS:

http://www.quora.com/What-is-the-best-Mobile-Analytics-servi...