The services I can provide to you: complex or simple website design and hosting, server administration/tuning/debugging, mobile app development excluding "native code" games (which is a speciality in and of itself I don't venture into), SEO (Search Engine Optimization), heavy-traffic site hosting, office network setup/testing/debugging, and computer choice/setup/repair.
If you want a mobile app I used another open-source framework. It's a popular one: Apache Cordova (it's not the server software, it's just managed by the Apache foundation). Many "apps" don't need to have a separate piece of software that is downloaded from Apple's App store or the Google play store: you just create a mobile website. A mobile website is one that is specifically designed to accomodate small-screen devices such as your iPhone or Android phone. This keeps your costs down.