This is a legit site but really hard to win in this site.
It is harder to win than it is on other dice sites because freebitcoin has higher house edge.
The lose rate is really high and when you use auto roll, the speed of roll is too fast so it's hard for us to control.
You can set all parameters to autobet stop when you want it to stop. If you don't like it you can bet manual.
If you're not addictive to play number games , you can earn from faucet in this site and it totally free. I would only stick to free roll.
Now this is bs. You don't have to be addicted to play multiplier game.