MixPanel is the biggie for user tracking during entire app lifecycle. But it can be $$$$. And you can miss out on collecting your own valuable data. If you are

MixPanel is the biggie for user tracking during entire app lifecycle. But it can be $$$$. And you can miss out on collecting your own valuable data. If you are writing your own web servers and request handlers at the outset. Then you can structure your log file data as required. And use the ELK stack to process very powerful queries, business analytics, predictive machine learning, sentiment analysis, etc. https://www.elastic.co/products https://www.elastic.co/products