Recently, I was reviewing how people evaluate their crypto earnings and I realized that many still confuse APY with APR.

It's a common mistake, but the difference is quite important if you really want to understand how much you'll earn.

APY, or Annual Percentage Yield, basically measures how much potential return you have on an investment considering one key factor: compound interest.
It's not just the simple interest you see on the surface, but that 'interest on interest' effect that amplifies your gains over time.

Now, why do people confuse it with APR? Because the Annual Percentage Rate (APR) does not include compounding.
It's more basic, more straightforward. But here's the interesting part: if you see an APR of 2% and an APY of 3% on the same opportunity, that extra 1% comes precisely from the compound effect.
When you reinvest your earnings, that money also starts generating more money.
It's the power of compounding working for you.

The APY formula is relatively straightforward: (1 + r/n)^(nt) - 1, where r is the nominal rate, n is how many times it compounds per year, and t is the time.
But in crypto, things get a bit more complicated because you have to consider market volatility, liquidity risks, and smart contract risks.

If you're looking to earn APY in crypto, you have several options.
There's lending, where you lend your cryptos and receive interest.
Then there's yield farming, which is riskier but potentially more profitable — moving your assets between different protocols seeking the best returns.
And then there's staking, where you lock your crypto in a blockchain network for a period and receive rewards.
Staking on proof-of-stake networks generally offers a quite attractive APY.

What you need to be clear about is that APY gives you a much more complete view than APR when comparing crypto investment opportunities.
But it's not the only metric that matters.
Each type of investment has its own advantages and risks.
Yield farming can have very high APYs, but also high risks, especially with new platforms.
Staking is generally safer but with more predictable returns.

In the end, APY is a fundamental tool in your crypto investor toolkit, but use it alongside other factors: market stability, your risk tolerance, specific liquidity risks.
It's not just a number; it's part of a broader strategy.