We’re the original loan calculator app, helping people calculate loan repayments, interest and “what if” scenarios for over 10 years!

Save yourself time and money (potentially even thousands of dollars) using the What If Loan Calculator. In seconds you'll be able to calculate the monthly payment for any fixed rate loan, including mortgage, auto, credit card, etc. You'll also be able to calculate "what if" scenarios to determine how additional monthly or yearly payments will help you pay off your loan early and save money in interest. And you'll be able to view a handy amortization/payment schedule showing how much of your loan's principle and interest will be paid each month.

If you're shopping for a home or car, thinking of refinancing, or want to see how you can save money, this application is a must-have!


- "What If" Scenarios
See how much money and time you can save with extra monthly and/or yearly payments.

- Save Loans
Save all your loans so you can quickly recall/compare loans.

- 10 Years’ Experience
This was the first "what if" loan calculator in the app store. We have tens of thousands of happy users since 2008.

- Simple to Use Interface
Very simple interface allows you to quickly use the calculator without having to reference help files and documentation.

- Smooth & Fast Performance
Optimized to instantly perform calculations when a field is updated.

- Email
Email loan data to yourself or others in a nicely formatted table that is easy to read.

We want to hear from you if you have any questions, concerns, or recommendations. Please email us at:


What’s New

Version 12.1

Updated to all the latest displays sizes
Reformatted email to a much more readable format

Ratings and Reviews

4.9 out of 5
1.4K Ratings

1.4K Ratings

Luvaznf ,

Love this app.

This app has been so useful:
1. When I was trying to sell my house last year and people wanted to do contract for deed and I needed an easy way to figure what the monthly payments would be for whatever I was trying to sell my house.
2. When I want to do "what if" situations about a home equity loan against my house and see from various amounts I am considering borrowing, what my monthly repayment amount would be.
3. When my wife loans me a sum of money to help me pay something, how many months I need to knock off of her (share of the bills) $500 monthly payments to pay her back.

It is so super to be able to play with different loan amounts, interest rates, and length of time to repay scenarios to compare the various monthly payments on what works best for me.
Hope this review helps. 😉

Dc9loser ,

Poorly designed

OK, calculating interest is simple. So why am I still sitting here after 10 minutes trying to figure out this program?

People want to buy a program like this in order to make simple calculations about paying off a loan. I'd like to be able to input my data and then run about 10 different solutions to figure out what would work for me in paying off a loan. If this does this I sure can't figure it out after 10 minutes because it is not idiot proof or it does not do that.

In either case if a software program takes more time for me to figure out than buying another software program then it is poorly designed. This package is poorly designed.

Developer Response ,

We are sorry you feel this way. The interface was designed based on user feedback; However, if you still find it difficult to use please contact us

Few bird ,

Just what I wanted

I have tried 4 other mortgage calculators and this is by far the best. Well designed and easy to use with all the information I need. Since finding this app I have deleted the others. I highly recommend


Matthew King
7.8 MB

Requires iOS 10.3 or later. Compatible with iPhone, iPad, and iPod touch.

Age Rating
Rated 4+
© Matthew King


  • Family Sharing

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

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