Mortgage Apps in Canada: What They Get Right and Miss

You have part of a down payment saved and a rough number in your head for what you can afford. Then a mortgage app’s affordability screen hands you a figure tens of thousands of dollars above anything a lender will actually write. That gap is not a glitch. It is what happens when a free calculator guesses at rules it has no access to.

Mortgage apps are genuinely good at two jobs: running payment math fast, and watching rates. They are close to useless for the question most people download one to answer, which is what a lender will actually approve. Here is where the line sits, and which tools earn the space on your phone.

Read next: How to Save for a Down Payment Without Waiting for 20%

What mortgage apps actually do well

Payment math is arithmetic, and arithmetic is the one thing a phone cannot get wrong. Change the amortization from 25 years to 30 and watch the monthly payment drop and the total interest climb. Add the land transfer tax for your province. Stack up closing costs. These are the calculations people most often do on the back of an envelope and get wrong, and a decent app does them in seconds.

The Canadian Mortgage App, from Bendigi Tech, is the one that has survived. It is free, still updated monthly, and covers payments, land transfer tax, closing costs and a stress-test calculator. Note that its PRO subscription runs $23.99 CAD a month and is built for brokers and agents who want a branded client-facing app. As a buyer, you do not need it.

Rate watching is the second real use. A broker’s app will push you a notification when a posted rate moves, which matters if you are inside a 90 or 120-day rate hold and deciding whether to lock. Most of the big brokerages hand out their own app, and the useful part is rarely the calculator, it’s the document upload. Photographing a pay stub into an app beats finding a scanner.

Where mortgage apps mislead you

The affordability screen

Canada’s qualifying rules are not the rate you were quoted. For an uninsured mortgage, lenders must test you at the greater of your contract rate plus two percentage points, or 5.25%. Quoted 4.2%? You qualify at 6.2%. On a $600,000 mortgage, that difference moves the payment by several hundred dollars a month, and the budget an app shows you by a lot more.

An app that never asks for your contract rate, or that hard-codes an old floor, will overstate what you can borrow. So will one that ignores the ratios. Lenders assess gross and total debt service, and the thresholds and the way a particular lender treats your car lease, your student line of credit or your self-employment income are not published in a form an app can read. Your credit card balances count against you here in ways a calculator’s single “monthly debts” field flattens.

Pre-qualified means very little

Pre-qualification is a form. You type in your income and your down payment, nobody verifies either, and a number comes back. It is not a credit check and it is not an approval. Pre-approval is the one with the credit pull, the document review and the rate hold attached, and it still comes with conditions.

The earlier version of this article described one broker network’s pre-qualifier as running “a quick but reliable credit check” and returning an answer in minutes. That was wrong, and it is the single most common thing mortgage apps get wrong about themselves.

The numbers a mortgage app usually gets stale

Three federal rules have shifted since 2024, and older apps have not all caught up.

Insurance premiums. Put down less than 20% and you pay a mortgage insurance premium set by a published schedule, not by your lender. At 90.01% to 95% loan-to-value, that premium is 4.00% of the loan. On a $500,000 home with 5% down, the loan is $475,000 and the premium is $19,000, usually added to the mortgage. In Ontario, Quebec and Saskatchewan there is provincial sales tax on that premium, and that part cannot be rolled into the loan. You pay it at closing.

Amortization. Insured mortgages can now run up to 30 years for first-time buyers and for buyers of new builds. An app still capping insured amortization at 25 years is showing you a payment higher than you might actually face, and understating your total interest.

Switching lenders at renewal. Since November 21, 2024, borrowers doing a straight switch of an uninsured mortgage between federally regulated lenders no longer have to requalify at the minimum qualifying rate, provided the loan amount and amortization do not increase. Lenders still check your debt ratios. If an app or an article tells you a switch means passing the stress test again, it predates the change.

Two of the old recommendations are gone

This article recommended four tools in 2019. Two no longer hold up. CMHC’s “Ready, Set, Home” app is no longer listed on the app stores; the agency now publishes its payment calculator, premium calculator and Homebuying Step by Step guide on the web instead, which is the better home for anything rule-driven anyway. ExactDeposit, the online deposit service, has no verifiable live presence. Any mortgage apps roundup that still lists either one has not been checked since it was written.

What to use for which job

The verdict

Download one calculator app and use it for payment math only. Get anything rule-driven, like the insurance premium, from the source that sets the rule. Get your borrowing number from a human who can see your actual file. The tools have genuinely improved since 2019, which is also why the professionals in this chain keep getting asked whether software will replace them — but the part software has not replaced is the part where somebody underwrites you.

One practical caution: broker and lender apps often ask to connect to your bank accounts to verify income and down payment. That is a reasonable request from a real lender and a dangerous one from anything else, so treat those credentials accordingly and confirm you are in the official app before you type anything.

Rules here differ by province and by lender, and the federal ones have moved more than once since 2024. Treat any number an app gives you as a starting point for a conversation with a licensed mortgage broker or your lender, not as a budget.