1) Use Python, Numpy, Scipy, Pandas, TA-Lib, MongoDB to write the core engine code and employ Django with Postgres to develop a Restful-based API backend.
2) Frontend developed using React, ReactStrap, Node.js and other JS technology
3) Official alpha version of Crystal Ball released August 10, 2018. To date, we have achieved a stable 700 monthly organic users without spending any advertising dollars.
4) Actively monitor data from Google Analytics and behavior from Smartlook to understand user behavior and build features to improve user retention.