the author of this app says:
BalanceBook easily keeps track of your personal or business account spendings, calculates the account balance and allows you to enter future repeating entries - with a specified interval in months - which are updated automatically on the appropriate date. You can also export files to a *.TXT format, these files can consequently be imported into Microsoft Excel for printing or further processing. The all new graphing function gives you an excellent overview of your past balance and spendings.
PocketC runtime, included in download file.