I re-invented the wheel with this one. But I'm glad I did as I learnt a whole lot. Basically made Google Analytics for apps using Python Flask and a local database which pushes new information every time it receives a net connection. What my roomate and I created is a tool to save data on the app locally as JSON until it can be pushed to the online database. We used this to track users using DAWebmail, keeping a tab of how often the app is used, viewing user actions- how many webmails are read on the app, how often webmails are deleted from the app, and so on. I later used this at MIT Kumbathon to track how often people call the ambulance/hospital during the Kumbhmela.