The Yobit investbox offers 2% interest per day for the bitcoin investment, which seems to be profitable.

If you look on that picture you'll see the full investment plan of bitcoin, but it has require some actions in order to get the interest from your investment plan, and if you'll not perform the action everyday before the payment countdown finished, your interest for that day will be zero.

On action there you are recommended to play dice 20 rolls with the minimum bet of 0.1 btc per bet, so that's if you play 20 time for 0.1 minimum bet, that's means if you lose all bets, you'll be totally lose 2 bitcoins, so that's its required to invest 1000 bitcoins in order to receive 20 bitcoin everyday which will cover your loses from the dice of 2 bitcoins.

But the bad thing is that you there have maximum amount of investment  which the minimum investment is 0.01 BTC and the maximum investment is 10 bitcoins, so that's by other means you cannot invest 1000 bitcoins in order to get profit.

So that's the fact from this investbox you'll be benefited when you won more than 10 bets among 20 bets, and if you lose more than 10 bets among 20 bets, this will be a big loss, so that's by other means this investment plan is very risk, its just a gamble.

So its better to play gambling for your own decision for your own decided minimum bet than playing risk with the minimum of 0.1 BTC.