Based on Scheduled Transactions
Debit & Credit can forecast your future balance based on your existing scheduled transactions and future pending transactions. You can either forecast your total net worth or specific account balance. There is a dedicated report "What will happen to my wealth in the future?" which is used for forecasting balance.
Please note that by default this report provides a forecast for your net wealth, a specific account can be selected in the report settings. There are shortcuts available for balance forecasting on some of the supported devices:
Balance Forecasting in macOS
Right click an account in the account list and select "Balance Forecast".
Balance Forecasting in iOS (iPad Only)
Tap on the account actions button while browsing transaction history. Select "Balance Forecast".