Watch your savings grow
See exactly how compound interest builds your money — enter four numbers and watch a clean year-by-year chart appear in seconds. Fully private, no account, no subscription.
See it in action
Everything you need, nothing you don't
One screen, four fields
Don't waste time with endless menus. Input your base data and see results immediately.
Real math
Accurate compound interest formulas.
Visual Growth
Dynamic bar charts update live.
Fully offline
Works without internet.
No tracking
Your data stays on device.
Buy once, use forever
No subscriptions. No hidden fees. Just great software.
Precision at your fingertips
The app uses the same high-precision mathematical models as institutional banking software, but with an interface designed for humans. No fluff, just the numbers you need to plan your future.
- check_circle Supports annual and monthly compounding
- check_circle Instant PDF exports for your records
How it works
Simple steps to financial clarity
Enter your numbers
Input your starting balance, monthly savings, and expected return.
Watch the chart build
See the magic of compound interest visualize before your eyes instantly.
Explore the details
Drill down into yearly breakdowns and adjust variables on the fly.
Frequently Asked Questions
Is my financial data safe? expand_more
Yes. Lær Smart Sparekalkulator is 100% private. All calculations happen locally on your device. We do not have servers, so we literally cannot see your data.
Do I need a subscription? expand_more
No. We believe in high-quality utility software that you own. It's a one-time purchase with no hidden fees or monthly charges.
Can I export my results? expand_more
Absolutely. You can save your chart as a high-resolution image or export a full table breakdown of your savings year-by-year as a PDF.
Does it work on iPad and Mac? expand_more
Yes! It is a universal app designed to look beautiful and function perfectly across all your Apple devices.
How is interest calculated? expand_more
We use the standard compound interest formula: A = P(1 + r/n)^(nt), where the monthly contribution is added at the end of each period for the most realistic outcome.
Are updates included? expand_more
Yes, all future updates and feature improvements for this version are included for free.