I'm not an expert programmer, but I have enough knowledge on modern web technolgies that allows me to create this app, so there will be for sure some dump, unoptimized, meanless or useless code.
Using twitter api for gathering tweets, many researchers looking for dataset to apply thier algorithms. In my case I need moroccain dialectal arabic textual data for sentiments analysis, these kind of researchers totally rely on the amount of dataset you have, that's why I took this step further to build this interface for people who don't know how to get data, althought you may find a dataset somewhere, but you will not find the data with the shape you looking for and that what's push me to creat this open source project.