// why matched
The poster is an amateur player seeking to optimize preflop decisions and understand GTO adjustments for specific game conditions, which is the core problem PokerReflex addresses, even if they are asking for a chart creation tool specifically.
// draft reply
Hey, great question! Creating truly custom preflop charts for specific bet sizes and 3bet rates often involves GTO solvers like PioSolver or GTO Wizard, which let you model custom scenarios and export ranges. It's a complex process, but understanding the underlying GTO principles is key to making any custom chart effective. For internalizing those principles and practicing how ranges shift, a dedicated preflop trainer can be really valuable.