Both these indexes are in Expenses History statistics.
Net Income = month income minus month expenses
Net Worth = accumulated Net Incomes
Tapping forecast you can choose the time range for both previous data indexing and forecast. Select from 1 month, 3 months, 6 months, 1 year, etc.
Net Income for coming months are calculated on average for selected previous months data. Net Worth are calculated for forecast time range using forecasted Net Income.