We just added a very basic calculator function to our web app, so you can now use basic mathematical operations when entering a cost (addition, subtraction, multiplication, and division). We hope to add similar features to our mobile apps at some point in the future!
This should be how both the iPhone and Android app work at this point (please let us know if this is broken for you on either of those). We still have not fixed this issue on the website, though it is something we plan to do.
The European Numblock has a , instead of a decimal point. So we type 19,99 €. The Web-App interprets that as1999.00 €. Could you fix that? That could result in giant messes.
Thanks, great App/Service!