100BB · UTG · RFILIVE
A♠
K♥
Fold
Call
Raise 2.5x
Correct
Practice GTO spots, import your own ranges, study the preflop library, and run postflop scenarios. A complete training tool — free, in your browser.
Six modes that share one workflow — study the chart, drill the spot, test it on a friend.
You're dealt a hand in a real spot — UTG open, BB defense, a 4-bet pot. The range is hidden. Pick fold, call, or raise. The solver answers in the same heartbeat: right or wrong, and the exact frequency. No charts to scroll. Just the rep, over and over, until the correct play is the one you'd make without thinking.
When you want to look instead of drill, Study is your reference library — the full 13×13 chart for any spot. Click a hand to see its exact raise / call / fold split. Five ways to view a range, so it sticks the way that works for you. Browse it, learn it, then jump straight into a quiz on the same spot.
Built-in spots are a start. The ranges that actually matter are the ones from your coach, your group, your own solver work. Paste them in — standard notation, any source — and Preflop Driller treats them exactly like the built-in spots. Save them permanently to your library, sorted by stack, stake, and format.
Preflop is half the game. The Postflop Lab is a full equity workbench: pick a board, set both ranges on a dual matrix, and watch the breakdown update live. Range vs range, hand vs range, hand-class distribution, blockers, runouts — the analysis a desktop tool gives you, running in a browser tab with nothing to install.
Drilling alone tells you how you're doing. Drilling against a friend tells you who's actually better. Send a challenge — you both get the exact same hands, so it's pure skill, zero variance — and see who drills the spots sharper.
Choose a built-in spot or paste your own range. Any position, any common situation.
A hand is dealt, the range hidden. Make the call from memory — fold, call, or raise.
Right or wrong, with the exact frequency, instantly. Wrong answers come back more often until they don't.
Every part of Preflop Driller — practice, study, range imports, the Postflop Lab, 1v1 challenges — is free. No credit card. No trial timer. No feature locked behind a "pro" badge. Open it in your browser and start. That's the whole offer.
Open the appYes — all of it. Practice, study, imports, Postflop Lab, 1v1. No card, no trial, no locked features. Open the app and start.
Not to drill, study, or use the Postflop Lab — open the app and go. Signing in (free) adds cloud sync for your range library, plus friends, 1v1 challenges, and range sharing.
Solver-generated GTO ranges run to convergence — 100bb 6-max cash, standard bet sizes (2.5x open, 3x 3-bet, ~2.3x 4-bet). The same class of math behind any serious solver.
Yes. Paste any range in standard notation, save it permanently to your library, and drill it exactly like a built-in spot — same feedback, same charts, same quiz. GTO or exploitative, both work.
A full postflop equity workbench — set a board and two ranges, see range-vs-range and hand-vs-range equity, hand classes, blockers, and runouts update live. Everything a desktop hand-analysis tool does, in a browser tab.
Send a friend a challenge. You both drill the exact same hands — pure skill, no variance — and see the head-to-head score when you're done. Play whenever, or live in real-time.
Yes. It runs in any browser, including your phone. Nothing to install — just open the page.
It opens in your browser. It's free. There's nothing to lose but your leaks.
Open the appNo card. No login to start. Opens instantly.