Hi Ronni, my returns on steemit are in single digits per day. Bitconnect, my youtube channel reviews it a bit more: https://www.youtube.com/channel/UCuJB7lCTkKpQOPB3Q9yz8ew
Bitconnect makes returns based on the daily volatility in bitcoin.
The average daily interest ranges from 0-1.9% atleast for my account.
When there are huge rises in the price of bitcoin, you will see very high daily returns based on the investment.
If you have further questions, I have a few tutorials on my youtube page, or I am happy discussing by email: