Quote:
PioSolver, GTO Rangebuilder, Snowie, which one is better and easy to use for beginner?
Before you go down that route, there were some questions asked (or alluded to) above that you should answer before you invest the significant energy in learning GTO play.
1. Why do you want to play GTO play?
2. What games are you playing (what limits, what location) etc?
3. How good are your opponents?
GTO is not best for exploiting unbalanced opponents. The vast majority of games, except at the highest levels, have exploitable, unbalanced opponents.