Apps by Karl Jeacle
Karl's Mortgage Calculator app icon

Finance

Karl's Mortgage Calculator

Karl Jeacle

Free 4.40 · 1 storefront · 124 ratings No in-app purchases
Open on Apple

About this app

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.

Latest release

What’s New

Version 2.7.2 Aug 30, 2026

2.7.2 - Minor fixes

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
124 ratings
124 Sep 14, 2026 · 124 ratings Sep 14, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current Free
Historical low Free
Paid → free 0×
Price history
Current Free
Free Sep 14, 2026 · Free Sep 14, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Sep 14, 2026 · 1:44 PM Free

Screenshots

Karl's Mortgage Calculator iPhone screenshotKarl's Mortgage Calculator iPhone screenshotKarl's Mortgage Calculator iPhone screenshotKarl's Mortgage Calculator iPhone screenshotKarl's Mortgage Calculator iPhone screenshot Karl's Mortgage Calculator iPad screenshotKarl's Mortgage Calculator iPad screenshotKarl's Mortgage Calculator iPad screenshotKarl's Mortgage Calculator iPad screenshotKarl's Mortgage Calculator iPad screenshot