This app hasnt been updated in so long, that Im not sure if its issues will ever be fixed. For instance, theres no way to add custom drinks or amounts of caffeine, you cant see how much caffeine you consume in milligrams, and the page thats meant to show correlations between caffeine and sleep ("UP Coffee Experiments") doesnt work, even after tracking for 15 days as it asks.
brortao about UP Coffee, v1.2