About Caspenda

Most investing calculators make you sign up, hide the result behind a button click, or bury the assumptions in fine print. Caspenda is the opposite: open the page, see the number, and know exactly where it came from.

What Caspenda is

Caspenda is a free educational website providing simple financial calculators and investing tools — compound interest, dollar-cost averaging, savings goals, retirement, investment return, loan payments and more. Everything runs in your browser: no sign-up, no login, no data collection, and every formula is published for anyone to check.

What Caspenda is not

Caspenda is not a brokerage, an advisory service or a news outlet. It does not provide personalized financial advice, investment recommendations or brokerage services, and we don't sell financial products. Results are hypothetical and for educational purposes only — they are not a guarantee of future returns.

Why "Caspenda"?

Caspenda is a coined word — built from the sound of "compound" and "pending": money that waits, and while it waits, grows. We made the name up on purpose. A name with no history lets us give it one: that time, not timing, is the most powerful thing you invest.

The math of wealth

Before you use a calculator, it helps to understand what it's really showing you. Here is the short version of how wealth grows:

• Compounding is the engine. Your returns start earning returns of their own. Small amounts, given enough time, grow into large amounts — and the curve isn't a straight line, it accelerates.
• Time beats timing. The single most powerful thing you can invest is time. Starting earlier with less money almost always beats starting later with more.
• Consistency is what you control. You can't control the market — but you can control how much you put in and how often. A steady, automated monthly contribution is the most reliable lever you have.
• The last years are the biggest. Most of your growth happens near the end of the curve. That's not a bug, it's how compounding works — and why the early years can feel slow.

Our calculators exist to show you this math with your own numbers: how much of the result is your money, how much is growth, and how it stacks up year by year.

Our principles

• Transparent. Every calculation explains its assumptions. If you can't see the math, you shouldn't trust the result — see our Methodology.
• Private. Calculations run locally in your browser. Your numbers never leave your device.
• Independent. No brokerage account is required. No sign-up, no login, no forms.
• Educational. Results are hypothetical and should not be treated as financial advice.

Who's behind Caspenda

Caspenda is built by a long-term index investor with nine years of experience building web tools. It started as a side project — a set of transparent calculators that explain exactly where an investment result comes from — and grew into the free tool network you see today.

The site stays deliberately independent: no sign-ups, no tracking, no brokerage affiliations, no products to sell, and nothing to gain from inflating a projection. If a tool or guide points you somewhere, it's because the math or the data genuinely warrants it.

— Caspenda

What's next

We started with compound interest, dollar-cost averaging and DCA vs lump sum, and have grown into thirteen tools — savings goals, retirement, net worth, portfolio growth, loan payments, inflation, ETF fee comparison, FIRE planning and more. We keep adding calculators and plain-English guides based on what people actually use, always with the same rules: open, transparent and private.

Contact

Questions, feedback, or a tool you'd like to see? We read everything — reach us at hello@caspenda.com.