Lifetimely Profit Analytics

Doing this sort of cohort and profitability analysis in Google sheets takes forever and is very 'painful', especially when testing different hypothesis.
Lifetimely is an amazing solution to do just that. Testing, analysis and strategic development are all there at the push of a button. The app is super well thought out and offers all the features you could possible need. Some features may not be easy to find or understand right away, but they are there and worth spending some time on. I had a talk with the developer and that was super insightful and useful. Strong recommendation!