If you're new to cryptocurrencies and DeFi, you've probably come across the terms APY and APR somewhere. But honestly, many people might not fully understand what APR is and how it differs. Today, I want to clarify this a bit.

First, let's explain APR (Annual Percentage Rate). This is a simple annual interest rate that does not consider compounding. Think of it as the basic number indicating how much interest you will earn or pay over a year. For example, if you invest $1,000 in a project with a 10% APR, you would earn $100 profit after one year. However, an important point is that APR is calculated on a simple interest basis, so it does not account for the effect of interest earning interest. In other words, there is no additional growth over time.

In contrast, APY (Annual Percentage Yield) shows the actual yield including compounding. The key difference here is that APY allows earned interest to generate more interest. If you deposit $1,000 at a 10% APY that compounds daily, your earnings will grow throughout the year, resulting in more than $100. In the world of crypto assets, protocols often perform frequent compounding calculations, which can significantly increase this effect.

Why is this important? Because when you deposit money into DeFi platforms or stake assets, if you don't understand what APR means, you might misjudge your actual returns. Especially when interest is compounded daily or weekly, the number shown as APY more accurately reflects the profit you will actually receive. Conversely, if you're considering loans or simple savings accounts without compounding, using APR makes it easy to understand the interest without additional calculations.

A common question is whether APY changes over time. In the case of cryptocurrencies, yes. Rates can frequently fluctuate depending on protocol policies and market demand. Therefore, before investing, you should always check whether the rate is fixed or variable.

The reason APY is usually higher than APR is due to the power of compounding. The more frequently compounding occurs, the greater the difference. Many DeFi platforms and staking programs offer APY on assets like ETH, BTC, or stablecoins. Large exchanges' Earn products are also similar.

Finally, if you want to aim for higher returns through compounding, look for investments that offer APY. If you're considering simple interest products, APR can give you a sufficient idea. However, this is just for informational purposes and not investment advice. Before making actual investment decisions, be sure to do your own research and consult with professionals.