Bertly is still in private beta, but I wanted something useful without asking people to create an account first. So I put three free calculators on the site:
Mortgage prepayment — if you have spare cash, compare lowering the monthly payment vs shortening the term:
https://www.bertly.app/tools/mortgage-prepayment-calculator
Debt payoff —find a repayment plan that fits your actual cash flow:
https://www.bertly.app/tools/debt-payoff-calculator
FX / investment gain — estimate the result of a trade in your base currency, using ECB reference rates for the buy and sell dates:
https://www.bertly.app/tools/fx-investment-gain-calculator
All of them: https://www.bertly.app/tools
No account required, and we do not store your data.