GameAnalytics is a free analytics service created by and for game developers. They have designed event types and the resulting metrics that are specific to gaming concepts so that you know what to track and how to best track it. These include: User acquisition, Player engagement, Monetization, including drivers of first time purchases, Player progression through game content, In-game economies and virtual resources (e.g. gold, lives, XP), Error tracking.
Once your game is instrumented, dashboards, analysis and data mining tools make it easy to understand what your players and monetizers are doing in your game, and where you should focus your development efforts. GameAnalytics is completely free to use. There are no pricing models nor derivatives, and the features available now will remain free going forward!
License: License Free