APPlyzer - Professional rankings & keywords for app developers, marketers and publishers.
SwipeWell - The only tool dedicated to helping you save, organize, and reference marketing examples (so you never feel stumped).
Segment Sources - Load CRM, billing, and other cloud data to your Warehouse
AppGrowthLab (by SplitMetrics) - 55 app growth lessons from 30 app marketing experts
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.
Growth.Design Case Studies - Product tips… in a comic book format