As described on its site, LaunchKit is a suite of easy to use tools for mobile app makers to create, launch and monitor our apps. On meumobi we use all their services: Screenshot Builder, App Website Builder and Review Monitor.
All are well designed, with best UX and features you need. For us the most important is the screenshot builder, we save the screenshots of all Apps we manage ( > 20), iOS and Android.
Unfortunately on July, 2016 LaunchKit team joined Google and decide to discontinue the service on July, 2017. They have open sourced LaunckKit, so anyone can set up their own instance. But I’m not sure it’s a good idea to own a discontinued project, let’s search a solid alternative.