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.
Apple App Analytics - Apple's very own iTunes Connect App Analytics
Histats - Start tracking your visitors in 1 minute!
My Motiff - Allowing you to stay connected in realtime
Matomo - Matomo is an open-source web analytics platform
Usage Analytics in appFigures - Track usage for your app along side downloads, ranks & more