appfigures - Cross-platform app store analytics for all of your mobile apps.
ASO Tools by AppFollow - Tools for App Store Optimization in App Store & Google Play
TheTool - App Store Optimization made simple and beautiful.
App Launch Checklist - Planning tool for launching your app successfully
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.
StorePreviewer - See how your app will look like on the App Store