AppGrowthLab (by SplitMetrics) - 55 app growth lessons from 30 app marketing experts
APPlyzer - Professional rankings & keywords for app developers, marketers and publishers.
The Creative Marketer - Techniques & tools for copywriters, marketers, and creatives
Segment Sources - Load CRM, billing, and other cloud data to your Warehouse
Pollen VC - Fuel your app's growth with early access to your revenues
App Annie - App Annie is a marketing analytics tool available for apps of all kinds. With App Annie, you can track sales, traffic, and a variety of other factors pertinent to monitoring an app's trajectory.