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.
AppStor.io - Free useful tools and services for App Store developers / marketing managers and owners.
AppFollow - AppFollow is an integrated solution that makes monitoring, analyzing, and elevating your app's reputation easy.
TheTool - App Store Optimization made simple and beautiful.
appfigures - Cross-platform app store analytics for all of your mobile apps.
ASO by 2Stable - Find the most relevant keywords for your app