SolvePoker

Precomputed GTO for PLO and NLHE 6-max cash: pick a flop, see the full strategy, drill it in the trainer, track your hands. The free tier has no credit card and doesn't expire: every preflop range in both games, 3 solved boards a day, 50 practice hands a day, and a hand tracker good for 100,000 hands. There is also a shelf of free no-account tools: a PLO4/5/6 equity calculator, a variance simulator with downswing and risk-of-ruin tables, a browser PQL engine, and starting-hand rankings for PLO4, PLO5, PLO6 and Big O with datasets downloadable under CC BY. The paid plan ($60/mo or $588/yr) opens the full postflop library and any board you type in.