Here are a few suggestions to make the Tomorrow app more user-friendly.
Make the statistics available for all time or for a specific period (from date X to date Y).
Add more spending categories. For example I noticed that there isn’t sports. The best would be to allow users to create their own categories in addition to the existing ones.
Give the option to reclassify all spending (past and future) from one merchant to a specific category. It can be tedious to do it manually when there are lots of them.
These functionalities are available on Revolut and having them on Tomorrow would probably convince more people to use Tomorrow instead.