Mobile App Stock + Backend

Looking to create a mobile app for people to track there portfolio, and several other variables. Will need a back-end created for an analysts to view information and then selectively pick what is displayed in the app. The backend and app will need to act like a screener and display data, there will be a login, and alerts are needed. There will be a many algorithms and set variables that will need to be calculated. The data will be coming from 4 api's and web scraping. Here a link to the current design however this will change but it does do a good job of showing functionality. [login to view URL]