Hello! I'm the developer of Toshl on Maemo and I must thank you for your feedback. The UI was really in center of attention from the beginning of development (got quite a few gray hair with gtk theming). It was our usability department's idea not to support income functionality at this point. Same thing for graphs. We wanted to make a convenient easy-to-use app, so we decided not to clutter things up too much at the beginning (but rather extend functionality on toshl.com).

We intend to evolve Toshl consistently (there are apps for Maemo and Android, as well as an iPhone app coming soon) so Deaconclgi, unfortunately, right now I can't add any functionality on my own. We are discussing this option among others, so any ideas for future releases are welcome.