Enter the mortgage details in the boxes and the app will automatically calculate the mortgage payment estimate.

You can toggle between a repayment mortgage and an interest only mortgage.

NB. If you select an interest only mortgage, any figure in the "Monthly Overpayment" box will be reset back to zero.

In the example screenshot, an initial repayment mortgage for £250,000 results in an overall repayment of £349,835 over the lifetime of the mortgage (Capital plus Interest payments).

Note, that the calculation makes a number of assumptions, that may not be correct for your circumstances.

Once you have entered the mortgage details, a graph will be generated showing the estimated payments for the mortgage.

Overpaying a repayment mortgage may reduce the overall length of a mortgage and reduce the overall amount payable over the term of the mortgage.

The app is able to estimate the impact of overpaying a repayment mortgage.

Just enter the monthly overpayment amount in the "Monthly Overpayment" box and the app will automatically re-calculate the estimate.

NB. The calculation assumes that the monthly overpayment is made every month for the duration of the mortgage.

The graph will be updated to show the impact of the overpayment, with a dashed line used to show the "non overpayment" option and the solid line to show the overpayment option.

The app can display

• Total paid over time
  • This is the cumulative amount that will be paid over the duration of the mortgage
• Capital debt over time
  • This is how much of the original mortgage amount capital amount has been repaid over the duration of the mortgage.
  • Generally, for a repayment mortgage, you are paying off a higher percentage of the interest at the start of the mortgage. Towards the end of the mortgage term, you will generally be paying off a higher percent of the capital debt.
• Both of the above options

Tapping on the "Show Overpayment Savings" button will display this screen.

It shows the reduction in the mortgage duration achieved by overpaying a repayment mortgage.

It will also show the reduction in the overall cost of the mortgage repayments over the term of the mortgage.

Tapping on the "Breakdown" button will display this screen.

This screen displays the estimated payments for a repayment mortgage. It will include any impact for overpayments.

You can choose to display the payments summarised per year (this is the default) or display the payments per month, by tapping on the "By Year | By Month" button at the top of the screen.