Karl JeacleKarl's Mortgage Calculator Customer Service
- Karl's Mortgage Calculator Customer Service
- Karl's Mortgage Calculator App Comments & Reviews (2026)
- Karl's Mortgage Calculator iPhone Images
- Karl's Mortgage Calculator iPad Images
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.
Karl's Mortgage Calculator App Comments & Reviews
Karl's Mortgage Calculator Positive Reviews
Easy to useThis app is simple enough to understand while giving you just the right amount of detail without overwhelming its user. I only wish that it could operate in landscape view to accommodate iPad technology. But that’s just a minor critique. Overall great app!👍🏾.Version: 2.2
This is superior!I wanted to determine what the short, mid and long term financial benefits would be in refinancing our current mortgage now that interest rates have dropped. I wanted detailed comparisons, and some key questions answered, not just a semi-useless summary. I tried several online calculators... very awkward to get the level of detail needed. Irritating ads. Needed pencil and paper - to answer some key questions - awkward. I could have done it manually on my business calculator sitting idle in the kitchen draw.... big pain in the neck to get the level of detail needed in usable form. Karl’s calculator was fantastically easy to use, user friendly, fast, and lays out all the amortization details on an easy to play with slider tool. The amortization tables, with loan balances, interest paid, etc. etc., charts, graphs, summary, and more are all there and intuitive to use. So, I entered the variables for my current mortgage and wallowed within the results. Did the same for other scenarios. I emailed the detailed reports to myself, compared the .csv spreadsheets (all on my IPad). Don’t bother to look elsewhere for a mortgage calculator. Even if your needs are totally basic, you can’t beat this one..Version: 2.2
The best mortgage calculator ever!!!I own a handful of properties and I’m always looking for ways to tweak my payments as rent goes up or as I come in to more income so that I can shorten my payoff dates. There are plenty of mortgage calculator apps or online calculators out there, but I always find some thing that they’re lacking or that’s annoying about their use. But Karl’s calculator is just about perfect. I love that I can easily create new scenarios and that they automatically save and that I can email them when I’m done and the recipient of the email does not need the app in order to see the summary. Simply click on the attachment and they have a tidy summary of the scenario that I’ve run. Like I said, perfect!.Version: 2.2
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..Version: 2.5.2
This app is the truth!I am buying my first home and wanted to be able to play with some scenarios after speaking with my lender. I was able to arrive at the same numbers we’d discussed and then play with them by adjusting different amounts. You can include PMI, based on your credit, and other relevant factors - or not. I feel some empowered! I can’t wait until my next conversation with the lender. She won’t know what hit her! Thank you so much for this invaluable tool..Version: 2.2
Love itMy 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..Version: 2.2
Incredible AND easyThis calculator is invaluable for comparing different scenarios and payment schedules for any variety of mortgage products. The extra payments feature and ability to add in taxes is super useful as well. I can’t speak highly enough about how easy to use it is as well. Strongly recommend for any financial planning for a loan or mortgage product.Version: 2.5.2
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..Version: 2.2
Long time userI've been using this app for years. To me, it's a perfect as I could hope for. Simple interface but still plenty of options. You won't find a better mortgage calculator..Version: 2.5.2
Best Mortgage ScenariosIf 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..Version: 2.5.2
Great app! I need more slots for paymentsI’m trying to calculate how quickly I can pay off my house, but I ran out of slots for extra payments. There are only 30 as far as I can tell. Income varies month to month so it’s nice to have my payments I’ve already made in the calculator as well as plans for future payments..Version: 2.2
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!!!.Version: 2.2
I love this appI just want to let Karl and the world know that I use this app ALL THE TIME. It works so well when I am calculating not only mortgages and commercial loans but also auto loans or really anything. I appreciate you building this!.Version: 2.2
It's awesomeAlways loved the online version, the app is even better. All the features you'd want. Love the ability to see how potential extra principal payments effect loan timetable and how much interest would be saved..Version: 2.2
Great appAwesome calculator to run different scenarios of increasing monthly payments vs. refinancing at the lower rates that are now. Wish I knew about it a few years ago. Definitely a robust app, I’m glad the developer took the time to do it and offer it for free (as of now)..Version: 2.2
HelpI can’t figure out why when I populate the purchase amount, the loan amount auto populates to the same number. Even if I start with the loan amount the purchase price will change to that number. How do I make it so I can have separate values for each again?.Version: 2.2
Love this app. I suggestMy broker told me of this app. Great app, suggestions to make better: when a loan is emailed it should include the name the loan was saved as. Also it'd be great if I could share the loan saved in the calculator with others who want to tweak the loan values as opposed to just emailing an HTML file..Version: 2.2
10 years using it?I think I’ve been using this for a decade now. Awesome for letting you the affects of paying extra on your mortgage. Just wish it had iCloud or Dropbox sync.Version: 2.2
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..Version: 2.5.2
Amazing!!!This is a clearly a thorough thought out and beautifully executed app, all around. I just wish I could adjust the property tax values like I can adjust the interest rate. Not a fan of the name, but if I wrote this app I’d probably ‘pull a TRUMP’ as well..Version: 2.2
365 and 360 Interest CompoundI was excited about it have 365 interest compound selection, I don’t have to open my excel worksheet. But it won’t calculate as 365. I think it’s not working..Version: 2.5.2
The BestI have reviewed several Real Estate mortgage calculators. I have found Karl's to be the best so far. Easy to use and allows you to add insurance and taxes to get as close as possible to a mortgage payment as possible..Version: 2.1
Hands-down best Mortgage appAbsolutely love this app such flexibility, and reporting. I immediately bought the paid version of the app instead..Version: 2.5.2
Love this appI would give 5 stars if it had updated the FHA MI rules. It’s running off the old numbers. But I use this app all the time! Love it. The ability to add in a temp buy down scenario would be an awesome add too..Version: 2.2
Extra paymentsLove this app!!! Just please add more extra payment boxes!!! I only have one box left :(. I always have a different amount that I pay for my principal..Version: 2.2
Simple, powerful, everything is thereFINALLY FOUND ONE! This mortgage calculator is simple to use, provides a wealth of data that you can use or ignore the tab, and provides options to put in HOA fees, extra principal, etc. It is ad supported, but the ads are neither obnoxious nor do they slow down the functionality of the app! Deleting all other crappy apps and installing this on my phones and IPad. 5 stars!.Version: 2.2
Works as describedDoes everything I need it to do. I really like the email feature!.Version: 2.2
I’m 9 years inI’m 9 years into my loan and it only works for new loans. I can’t adjust the payment amount to reflect my payment and the payoff day before implementing an early payoff isn’t correct. My payoff is 2036 but the app says it’s 2041. Very confusing to use.Version: 2.2
Easy and ClearVery user friendly and easy to navigate..Version: 2.2
Accurate Great App!Every input seems to match the amm schedule provided by title company. I am an investor and use it almost daily..Version: 2.2
Exceptionally good!It has become a great tool for me in my daily work.Version: 2.5.2
Great flexibilityThis app is hands down the best mortgage calculator I’ve used. The flexibility enables you to model your mortgage easily and accurately..Version: 2.2
I've been using it for years!I love this app. It's just what I need..Version: 2.2
Love it.Great work on including the table and line graphs, very nice layout and easy to use and understand. A+++.Version: 2.2
Great no Nonsense app!!Works great! Simple to use and very straight forward..Version: 2.2
No rotation on iPad/Decent mortgage calculator.App will not rotate out of portrait into landscape which makes it annoying to use as far as I am concerned. Otherwise it works as designed..Version: 2.2
No matter who you are, download this app!My fiancé and I are about to buy a house! This apps is helping me figure out interest truly means in this equation! I am hopping we can pay this house cash in 5-10 years!!! You will not regret it! I promise! Alicia.Version: 2.2
Look nowhere elseBest of best.Version: 2.2
Simple and clean but buggyAdding prepayment or extra payment options don’t reflect in tables or charts.Version: 2.2
Best mortgage calculatorEasy to use, full analysis of loan. Love it!!.Version: 2.2
Free International Money Transfer 💸Enjoy high maximum transfers into more than 20 currencies while saving up to 90% over local banks! The cheap, fast way to send money abroad. Free transfer up to 500 USD!Version: 2.5.2
