Calculate mortgage payments given principal, interest and term. Reverse calculate any one variable given the other three.

Enter a down payment amount or percentage and let the calculator show how large a mortgage you require.

See how the monthly payment changes when you factor in additional monthly or annual loan costs such as PMI, HOA, taxes and insurance.

The calculator supports Fixed and Adjustable Rate Mortgages (ARM) loans with up to five changes in interest rates. Interest-only mortgages loans are also supported.

You can pay off your mortgage early with extra payments. Add one-off, monthly and annual extra payments. Choose up to ten additional extra payment amounts and payment periods and the calculator will show how much money you can save on the loan.

Choose from weekly to annual loan payments and adjust the compounding period from daily through annual periods. The calculator supports Canadian mortgages along with UK annual rest mortgages.

Multiple rounding options on loan calculations are also available. Choose between no rounding, round half up, half down, to even, to ceiling and to floor.

The calculator also supports the input and display of multiple currencies.

What’s New

Version 2.2

- USDA loans
- new FICO ranges and MGIC rates
- updated CMHC rates
- show total/LTV in tables
- highlight current date in tables
- more currencies added
- iPhone X support
- bug fixes

Ratings and Reviews

4.6 out of 5
30 Ratings
30 Ratings
Sandy1486 ,

Love it

My husband and I owner finance land. Our customers are always wanting to know notes, down pmt. and how the interest thing will work.... so we calculate it and snap them a picture of it and it answers all their questions. So east to use. Looked at several other and they didn’t always work correct and eventually want to charge you huge fee to do the same thing this app does for free. Thank you Karl... wherever you are.

Catendahat ,

Simple yet powerful! An elegant app.

This app has it all! Just get this and have the best mortgage calculator there is for a modest fee. I’ve been using it since inception and have saved lots of money by seeing the impact of extra payments on my principle balance. Get this app, you won’t be disappointed.

Now a Texan ,

So motivating!

I paid off my mortgage in 4.5 years and this app has been so motivating for me all along the way. I really like all the visuals and also the option to add so many different extra payments one-time or recurring for a period. Thank you, Karl!!!


Karl Jeacle
11.6 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2017 Karl Jeacle


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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