You have heard it is powerful and do not see why
The numbers in the examples seem made up.
Courses
Start with three things you can do today
How to understand compound interest
See how compounding works, for you and against you.
A course on compound interest that sticks. It covers what compounding actually is, how time and rate interact, how the same maths builds savings and buries borrowers, the rule of seventy two and other shortcuts, and how to run the numbers in your head well enough to make decisions.
Open Cadence on the App Store, type the sentence when it asks what you want to learn, and answer a few setup questions. Free to start. Android testers can request early access.
Type this when Cadence asks what you want to learn
I want to understand compound interest properly, for savings, loans and investing. Show me how it works, why time matters so much, and how to run the numbers myself without a spreadsheet.
Change any word so it fits your situation. The course is built from what you type and a few setup questions.
Start today
Three things you can do before the course exists.
Useful on their own. The course is for when you want the whole skill, not just the first move.
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Use the rule of seventy two
Divide seventy two by the interest rate to get the doubling time. At six percent, money doubles in about twelve years.
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Run one number for your own situation
Take a real balance and a real rate and double it forward through the years. The curve stops being abstract when it is yours.
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Look at the minimum payment on any debt
Compounding works against you exactly as hard as it works for you. The minimum payment is designed to keep the balance compounding.
- Best for
- Math & numbers
- Prerequisites
- None. Bring the situation you have.
- Course length
- 7 to 30 lessons, sized to your goal
- Lesson pace
- About 10 minutes a day
- Format
- Read it, or play the audio
- Access
- Available on the App Store, with early features and Android testing access
Before the course is built
Setup asks about your situation first.
Lesson 1 opens on the moment you describe, and the examples use your role. For this request, expect questions like these.
- Is this mainly about savings, debt, investing, or all of them?
- How comfortable are you with percentages?
- Is there a decision you want to run the numbers on?
Right for now
If any of this sounds familiar, start here.
You have a loan and do not understand the total
How did borrowing that become paying this?
You want to run the numbers
Without a spreadsheet or a calculator app.
Course arc
Where the course goes, in order.
Cadence writes the lessons for you, so the exact path follows your answers. This is the ground a course built from this sentence covers.
01 / 06Simple versus compound
The difference that changes everything.
The curve
Why the early years look slow and the later years do not.
Rate, time, contribution
Which lever matters most, and when.
Compounding against you
Debt, fees and the cost of the minimum payment.
Shortcuts
Rule of seventy two, doubling and rough estimates.
Decisions
Pay down debt or save, and how to compare.
What changes
What you will be able to do, and what you will stop believing.
You will be able to
Understand compounding
Interest on interest, and why the curve bends.
See why time matters
Starting early versus contributing more.
Understand it on debt
Credit cards, minimum payments and how balances grow.
Estimate in your head
The rule of seventy two and other shortcuts.
Ideas this course corrects
A higher rate always matters more than starting earlier
The result depends on the rate, time, contributions and fees. Compare the actual assumptions instead of using a universal rule.
Small fees do not matter
A one percent fee compounds too. Over decades it can take a large share of the total.
Course questions
What to know before you start.
How to understand compound interest: what can I do today?
Use the rule of seventy two. Divide seventy two by the interest rate to get the doubling time. At six percent, money doubles in about twelve years. Run one number for your own situation. Take a real balance and a real rate and double it forward through the years. The curve stops being abstract when it is yours. Look at the minimum payment on any debt. Compounding works against you exactly as hard as it works for you. The minimum payment is designed to keep the balance compounding.
Is this a fixed course?
No. Cadence builds the course when you type the sentence and answer a few setup questions, so the lessons follow your situation. This page describes what a course built from this request covers. You see the whole path before Lesson 1.
Who is this course for?
A course on compound interest that sticks. It covers what compounding actually is, how time and rate interact, how the same maths builds savings and buries borrowers, the rule of seventy two and other shortcuts, and how to run the numbers in your head well enough to make decisions. It sits under Math & numbers in the Ideas & discovery part of the library.
Do I need any prior experience?
No. Setup asks what you already know and where you want to use it, and the course starts from there. Bring a real situation if you have one; the examples are built around it.
How long does it take?
Courses run 7 to 30 lessons of about 10 minutes, sized to what you asked for. One lesson a day is the intended pace, and you can go faster. Lessons can be read or played as audio.
Does this course award a certificate or degree?
No. Cadence is for practical self-learning and does not award accredited degrees or professional certification.
Start today
Type it, answer a few questions, open Lesson 1.
The sentence to type
I want to understand compound interest properly, for savings, loans and investing. Show me how it works, why time matters so much, and how to run the numbers myself without a spreadsheet.
Open Cadence on the App Store, type the sentence when it asks what you want to learn, and answer a few setup questions. Free to start. Android testers can request early access.