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.
The Influencer Marketing Stack - Free resources to launch a killer campaign
AppFollow - AppFollow is an integrated solution that makes monitoring, analyzing, and elevating your app's reputation easy.
Startup Stash - A curated directory of 400 resources & tools for startups
appfigures - Cross-platform app store analytics for all of your mobile apps.
Makerbook - A directory of the best free resources for creatives