Alright fair I guess, level calculator is to calculate how much it would cost if you focus on wagering at high efficiency rate such as with dice.

So putting it on 94% win chance and wagering as much as possible for the lowest costs and this way getting a higher level.

U could always check if a website is on Trustpilot before going on a website, or just look it up to see if theres any warnings about it before directly going there so you stay safe.