No. While CalendarBudget contains data about your finances, that data gets into CalendarBudget either by manually entering it into CalendarBudget, or by importing transactions that you’ve exported from your online bank account.

So, while CalendarBudget should match your bank account balances, it does not actually connect to your bank account, and you will never be asked for any banking information. We chose to take this approach to maximize your security and allow you to maintain the security policy with your bank, thus not putting your hard-earned money at risk.
See here for more information about the risks of using a service that connects to your bank account –> https://calendarbudget.app/blog/security-with-online-banking-and-budgeting-tools/