Preflop charts and ICM drills
Offline MTT study, built for review
8-max preflop charts, ICM charts and drills that work in airplane mode once your packs are downloaded. Your study data stays on your phone by default.
Hornbook is for serious MTT players who study before and after their sessions. It is built by a long-time, experienced MTT player.
Study only. Hornbook is for study away from the table, never during a session you are playing.
It does not connect to any poker site or app, and it does not read your screen.
Coming soon to Google Play and the App Store.
What is inside
- Preflop charts for 8-max tournament spots. Pick the stack depth, your position and the action line. See the action mix for every hand, with combo counts and a range summary.
- Heads-up chip EV charts at every stack depth, free.
- ICM charts by tournament phase: Early, Middle, Bubble, In the Money and Final Table, from documented Malmuth-Harville solver runs.
- Multiway charts for lines with more than one opponent.
- Drills. Answer a spot, then compare your answer with the chart. Your results show where your leaks are.
- English and Vietnamese interface.
Strategy you can trace
Every chart records where it came from: a documented solver run with its settings and date, or files from a long-time, experienced MTT player. No frequencies are made up. Solver output is an approximation of good play, not a guarantee, and each chart says which model it uses, chip EV or ICM.
Private by default
- No account and no sign-in.
- Your drill results, progress and settings stay on your phone by default.
- No advertising and no tracking.
- The app goes online only to download chart packs, to fetch the unlock key for a Pro pack, and to handle your subscription through the store.
- Works in airplane mode once your packs are downloaded.
The details are in the Privacy Policy.
Pricing
Free: heads-up chip EV charts at every depth, and 10 drill hands a day.
Pro: multiway and ICM charts, unlimited drills and leak tracking.
| Plan | US list price | Per month | Free trial |
|---|---|---|---|
| Monthly | USD 9.99 | USD 9.99 | None |
| 6 months | USD 49.99 | about USD 8.33 | 7 days |
| Yearly | USD 79.99 | about USD 6.67 | 7 days |
Prices are US list prices. The App Store and Google Play show the price for your region before you pay. Subscriptions renew automatically unless you cancel at least 24 hours before the end of the current period. Manage or cancel in your store account settings. Payment and cancellation go through the store, not through us.
Questions
When should I use Hornbook?
Before and after your sessions. Hornbook is for study, never during a session you are playing. Many poker sites and tournaments ban charts, solvers and similar tools while a game is in progress, and breaking those rules can cost you your account and your winnings. Use Hornbook only when your session or tournament has ended.
Does it connect to a poker site?
No. It does not connect to any poker site or app and it does not read your screen.
Does it work without a connection?
Yes, after you have downloaded your packs. The app goes online to download packs, to fetch the unlock key for a Pro pack and to handle your subscription.
Where does the strategy come from?
From documented solver runs, or from files by a long-time, experienced MTT player. Each chart records its source, its settings and its date.
Who is it for?
Adults aged 18 and over who study MTT poker. Hornbook has no real-money play and no gambling.
Which languages?
The app is in English and Vietnamese. This page is also available in Vietnamese: Vietnamese version.