Startup Return Calculator - How much money can your startup investment make you?
Apple App Analytics - Apple's very own iTunes Connect App Analytics
Harpoon Revenue Goal Calculator - Freelancers, how much money do you need to make?
My Motiff - Allowing you to stay connected in realtime
KnightOS - An open-source OS for calculators
Usage Analytics in appFigures - Track usage for your app along side downloads, ranks & more