Sensor Tower - Sensor Tower is a platform for app store optimization and app industry intelligence.

Google Analytics - Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.

AppStor.io - Free useful tools and services for App Store developers / marketing managers and owners.

StatCounter - StatCounter is a simple but powerful real-time web analytics service that helps you track, analyse and understand your visitors so you can make good decisions to become more successful online.

appfigures - Cross-platform app store analytics for all of your mobile apps.

Histats - Start tracking your visitors in 1 minute!