Freebitco has a 4.08 annual interest rate on Bitcoin deposits. Has anyone noticed how amazing it is? Just think about this, 4% yearly interest is a very low interest but think about it, when freebitco introduced 4.08% interest annually, bitcoin's price was 1000 USD. If you bought 1000$ worth of bitcoins in 2017 and deposited on freebitco, it looks like you would receive 40$ in one year but now when the price went up to 40K, you are earning 4.78$ daily. Just think about this, the annual interest rate becomes a weekly interest rate because of Bitcoin's price and Freebitco is still willing to pay you as promised, this is amazing.
The interest is one of the best features they have and from the moment they launced it, I made use of it. In total I have earned an extra 0.025 BTC thanks to this, which is not bad at all. With the premium membership (from a certain tier ), you can also earn even more interest; right now my interest rate is 4.49%.