Learn poker with Chip.

A poker range calculator turns one number, the share of hands you want to play from a given seat, into the exact set of starting hands that makes it up. Texas hold'em has 169 distinct starting hands. The calculator ranks them, draws them as a 13×13 grid, and lights up the ones inside your range, so you can learn a threshold instead of memorising a list.

The chart is free on iOS and Android: no account, no ads, and it works offline. The paid tier adds the parts that come from solving rather than ranking: formats and stack depths beyond the free 100bb cash-game slice, the per-hand EV column, and the AI coach.

It is the standard 13×13 grid of every Texas hold'em starting hand: pocket pairs run down the diagonal, suited hands sit above it and offsuit hands below. A preflop range chart colours in the hands you play in a given situation, so an opening range is a shape you can recognise at a glance rather than a list you recite.

GTO stands for game-theory optimal: a strategy that cannot be beaten in the long run by any counter-strategy, even one that knows exactly what you are doing. A GTO preflop solution is not a raise/fold list. It is a set of frequencies, where a hand might raise 68% of the time and fold the rest, plus the EV of each option. It is a baseline to deviate from deliberately, not a script.

A chart answers "what"; a coach answers "why". An AI poker coach reads the same solution data the chart is drawn from and explains it in plain English: why a hand sits just inside a range, which hands dominate it, what changes when you move one seat. That reasoning is what transfers to the spots no chart covers.

Every seat from under the gun to the big blind, at tables from heads-up (2 players) to full ring (10). Each seat has a default opening percentage for each table size, and you can save your own numbers over any of them.

Both. The iOS and Android apps are on the App Store and Google Play, and the web app at app.pokerrangecalculator.com runs the range chart, solutions and the trainer in any modern browser with nothing to install.

No. The chart works fully offline and stores your settings on your device. An account only matters if you buy a subscription and want it to follow you to another device.

It depends on where you are playing, and you should check first. Live card rooms generally do not want phones or notes in use while you are in a hand. Online, rules vary by site: many permit static charts but prohibit any tool that is fed your actual hand in real time. This app is built for study away from the table, which is also where it does the most good.