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The debt simulator
Add your debts, pick a strategy, and see your month-by-month path to zero. It runs in your browser.
Open the simulator
New: Pro is free
Find out if your debt plan actually reaches zero.
Chunk Chunk is a free Velocity Method simulator. Tess and Winnie walk you through it, and Pro is now free when you make an account.
Worked example $0 in
Free, no sign-upRuns in your browserMade in Canada
New today
Pro is free. Yes, really.
Pro was $96 a year. Now free.
Make a free account and confirm your email, and Pro is on. No card needed. Payment reminders on your phone and computer, your payment history on every device, and your plan sent between devices, encrypted.
Get my free ProTess and Winnie, on every app
Money, made fun. Watch a Reel.
Short how-tos, one money moment at a time. Tap one to play it right here.
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How to make a 13th payment
On Instagram -
How to confront your debt
On Instagram -
How to make your card your friend
On Instagram -
How to change lanes in a semi
On Instagram -
Meet Winnie's nemesis
On Instagram -
What's 167?
On Instagram -
How to stop getting lost in your tabs
On Instagram -
How to fall asleep in a cozy cabin
On Instagram -
Coming soon
Your own Tess and Winnie Reel
You pick the scene and the banner. We make the Reel, and it is yours to post anywhere.
Founders price $149.99 for the first 5 orders
Custom Reels
Everything Chunk Chunk
Free tools first. Then the fun stuff.
Free, a $96 value
Pro, on the house
Payment reminders, your payments on every device, and your plan sent between devices, encrypted.
Get Pro freeFree
Loan calculators
Chunk the mortgage or just pay extra? It tells you which costs less.
Try the calculators
Coming soon
Custom Reels
Tess and Winnie in a Reel made for you. You pick the scene and the banner, we make it.
Founders price $149.99, first 5 orders
Coming 8 November
167, the course
Build like we do, with Tess, in the hours you actually have in a week.
Ebook $14.99, coloring book $4.99
Read it. Colour it.
Our Canadian playbook for paying off debt faster, and a spooky-cute coloring book.
See the books
Made in Canada
Wear the dog.
Tees and hoodies with Winnie and the Chunk Chunk crest, shipped to your door. Prices include shipping and tax.
Visit the storeHow it works, in depth
The whole story, one tap at a time.
Live results from the engine, the calculators and the free lessons. Tap any of them.
Month oneMost plans die in month one.
The part nobody shows you
Most plans die in month one.
The Velocity Method only works if there is a surplus to accelerate. The arithmetic that settles it takes ten seconds, and almost nothing online will do it honestly. Here it is, on a worked example.
Month one, in full
- Income
- Living expenses
- Card minimums
- Left to chunk with
That surplus is the whole engine. With it below zero, no amount of chunking helps: the line just climbs.
It is a surplus multiplier, not a money printer.
Chunking borrows against your personal line of credit (PLOC) to kill a high-rate balance, then pays the line down with the surplus. If there is no surplus, the loop has nothing to run on.
The app will tell you when the answer is no.
Plenty of plans never reach zero. Chunk Chunk says so plainly, names the line that breaches its limit, and does not dress it up as a payoff date.
The mechanismOne line runs everything.
The mechanism
The PLOC becomes the account everything runs through.
Not a second budget. One line, doing the job your chequing account was doing, and a home equity line behind it for the months when the PLOC runs out of room.
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Income lands on the line
Your whole pay cheque goes against the PLOC balance the day it arrives. Interest is charged on the average balance, so every day it sits lower costs you less.
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Everything is charged back to it
Living costs and every card minimum come off the same line. What is left at the end of the month is the real surplus, not the one you hoped for.
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The surplus chunks the debt
A lump comes off the target card, chosen by your strategy. Cash first, then the PLOC, then the HLOC. Repeat until every balance and both lines are at zero.
Where the money goes
What you get backMonth by month, all the way to zero.
What you get back
A month-by-month answer, not a rule of thumb.
The same worked example, run all the way to zero. Every figure below is live output from the engine. Nothing on this page is typed by hand.
Balances to zero
Four strategiesChange it, watch the answer move.
Four ways to order the queue
Change the strategy, watch the answer move.
Lowest balance, highest rate, highest payment, or cash flow index. Same worked example under each: these are real results, run four times.
Loan calculators FreeChunk the mortgage, or pay extra?
Mortgages and loans Free
Should you chunk the mortgage, or just pay extra?
The calculators run an instalment loan three ways: contractual payments, the surplus paid straight in, and the surplus run through a line of credit. Then they tell you which one actually costs less. Often it is not the one you were sold.
Balance to zero
Loan maths follows the same amortisation the workbook’s Loan Calc sheet uses. The calculator is built into the free app: enter your own loan, pick which of your credit lines funds the chunks, and it tells you which of the three actually costs less.
Free lessonsStart with the how-to videos.
How-to videos
New to all of this? Start with the lessons.
Free videos of about five minutes each, from what the Velocity Method actually is to your first plan. Every figure is worked out on screen.
The honest partWhen the answer is “no”.
Sometimes the honest answer is “no”.
Chunk Chunk ships with a worked example whose answer is Debt free in: Never, because that is what the arithmetic says, under all four strategies. The test suite asserts it stays that way, so a future change cannot quietly turn a failing plan into a comfortable lie.
A tool that only ever tells you yes is not a tool. It is a brochure.
Pricing
Free. Pro is free too.
The simulator is free and always will be. Pro, for running this every month against real accounts, is free with an account.
Free
$0
No account needed. The whole simulator, forever.
Everything in Free
- Unlimited debts and scenarios
- All four payoff strategies
- Month-by-month schedule and chart, with CSV export
- HLOC modelling as a backup chunking source
- Mortgage and personal-loan calculators
- Multi-rate cards: cash advances, balance transfers, equal payments
- Due dates, a payment calendar, and one tap to mark a payment paid
- Payment history and monthly check-ins
- Daily budget and expense tracking
- Back up your plan and budget, and export or import your debts
- Runs entirely in your browser
Free with an account
Pro
Pro was $96 a year. Now free.
No card needed. Just confirm your email.
- Everything in Free
- Your payment history on every device you sign in on
- Send your plan and budget to another device, encrypted
- Payment reminders on your phone and computer
What we sell: Merch, the ebook and the coloring book.
Prices and your data
Prices in Canadian dollars. No account is required to use the simulator. Your balances, rates, income, plan and budget stay in your browser unless you send them. With a free account the dates and amounts you record as paid sync across your devices, and you can send the whole plan, and your daily budget with it, to another one: it is encrypted here first, under a passphrase we never see, so nobody at Chunk Chunk can read the copy.
Questions
The ones worth answering.
Is Pro really free? What's the catch?
It really is. Make an account, confirm your email, and Pro is on. No card is asked for. We earn from the store, the books and, soon, Custom Reels and the 167 course, so the simulator and Pro can stay free.
Is the Velocity Method a scam?
No, but it is oversold. It is a real technique that converts a monthly surplus into faster payoff by keeping your balance low on a lower-rate line. It cannot create a surplus you do not have, and most of the material online skips that part. This tool exists to do the arithmetic rather than the pitch.
Does my financial data leave my computer?
Only if you ask it to. The simulator runs in your browser and stores your plan in local storage on your own device, and an account is optional. With a free account there is a button that sends one copy of your plan, and your daily budget with it, to your account so another of your devices can pick it up. That copy is encrypted before it leaves, under a passphrase you choose and we never receive, so it is unreadable to us and to anyone who gets hold of it. Nothing is sent until you press it.
What is the difference between the PLOC and the HLOC?
The PLOC is the operating account: income lands there, and living costs and every card minimum are charged against it. The HLOC carries no day-to-day flow: it is drawn on only when the PLOC has no room left to fund a chunk, and it is paid down from surplus once the PLOC is clear.
Which payoff strategy should I use?
Highest rate is mathematically cheapest. Lowest balance clears accounts fastest, which some people need to keep going. Cash flow index balances the two by ranking balance against payment. The app runs all four so you can compare rather than guess.
Can it model a car loan or a mortgage?
Not yet. Every debt currently amortises as a percentage-minimum credit card. Fixed-payment instalment loans are the next thing on the list.
Is this financial advice?
No. It is a calculator that shows its work.
What does the chat assistant do with my questions?
It answers questions about Chunk Chunk from the text on this site, and that is the whole of what it can do. It cannot see your plan: the simulator sits on this same domain, and the widget is built so that it never reads one key of its storage, which is checked on every build. Your question goes to Anthropic, who answer it. Questions are logged with nothing attached that says who asked, and any long number is blanked out first, so we can see what people want to know without learning anything about you.
You found the back room
Where it all started.
“It all started from a picture of my dog. And it grew to this.”
Vic, founder
That is Winnie, the real one (her photo, cleaned up). She is the banknote in our logo, too.
Open the rig in 3D
What will you do with the first month you don't owe a thing?
Find out when it is. It takes about five minutes, and it is free.