Karl's Mortgage Calculator

Karl's Mortgage Calculator

by Karl Jeacle

121 ratings
89 reviews
Free
With Ads

Details

  • Released
  • Updated
  • December 4, 2015
  • July 10, 2026

Features

Karl's Mortgage Calculator screenshot #1 for iPhone
Karl's Mortgage Calculator screenshot #2 for iPhone
Karl's Mortgage Calculator screenshot #3 for iPhone
Karl's Mortgage Calculator screenshot #4 for iPhone
Karl's Mortgage Calculator screenshot #5 for iPhone
iphone
ipad
🖼️Get Icon
Icons↘︎

About

This app helps you calculate mortgage payments with various loan types, including fixed, adjustable, and interest-only. It allows for early payoff calculations with extra payments and supports multiple currencies and international mortgage types.

Calculate mortgage payments
Reverse mortgage calculation
Factor in additional loan costs
Support for Fixed and ARM loans
Early payoff with extra payments
Multiple currency support
International mortgage types
Show original description

What's New in Karl's Mortgage Calculator

2.7

July 10, 2026

2.7 - Darker color scheme - EU user consent for GDPR - Indian currency - Bug fixes

More

User reviews

AMAZING APP!

I absolutely LOVE this app! I’ve used it for two house mortgages running “what-if” scenarios trying to target reasonable early payoff dates and understanding how much money I save in interest I don’t have to pay the bank. The app is easy to use and easy to pivot your payoff strategy when financial changes happen and you have to put less or can put more into the house. Seeing the payoff graphs, tables, and summary views are so nice. I use all the features on this app. The app is simple but powerful. Very user friendly but not underpowered. Great job! This is probably the first review I’ve ever posted about a mobile app because I just loved it so much.
Show more

PORN

Can you explain why pornographic ads run across the bottom of each page of the app?

Best Mortgage Scenarios

If you want a detailed and easy to use calculator you can use to estimate future principal payments and payoff scenarios with both incremental monthly progress, monthly progress and overall totals - this is what you are looking for.

Spot on!

I have been using this calculator for about 4 years and it’s been spot on. The estimate has been accurate. I recommend it to all my clients.

Exceptionally good!

It has become a great tool for me in my daily work

Developer apps

FAQ

What can this mortgage calculator do?

This app allows you to calculate mortgage payments based on principal, interest, and term. It can also reverse calculate any of these variables if the other three are known. You can factor in additional costs like PMI, taxes, and insurance to see their impact on your monthly payment.

Does the app support different types of mortgages?

Yes, the calculator supports Fixed and Adjustable Rate Mortgages (ARM) with up to five interest rate changes. It also supports interest-only mortgage loans, providing flexibility for various borrowing situations.

Can I calculate early mortgage payoff with this app?

Absolutely. The app enables you to plan for early mortgage payoff by adding extra payments. You can input one-off, monthly, or annual extra payments, and the calculator will show potential savings on your loan.

What currencies and international mortgage types are supported?

The calculator supports the input and display of multiple currencies, making it versatile for international users. It also includes support for Canadian mortgages and UK annual rest mortgages.

Is this app free to use?

The app is free to download and use, supported by advertisements. There are no in-app purchases mentioned, indicating a straightforward ad-supported model.