User-friendly application allowing to calculate the capital gain realized on the sale of a real estate investment, using leverage (debt quantum, interest rate, maturity) and by setting out some exit assumptions (year of sale, yearly RE market growth rate, initial purchase price of the investment). The application displays also the value at sale of the property and the sale price ratio in currency/m2. All parameters can be set out by the user using sliders or by typing figures in text boxes. Capital gain value is calculated dynamically while the user is setting out parameters.