Sensor Tower - Sensor Tower is a platform for app store optimization and app industry intelligence.
Simple Poll - The easiest way to create polls in Slack
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.
GitHub Polls - Polls for GitHub issues and readme
appfigures - Cross-platform app store analytics for all of your mobile apps.
minipoll - Create simple shareable polls in seconds