Review every game.
Right on your phone.
Import a finished game and Knight Rise grades every move with an accuracy score and plain-language coaching. Play a 2300-ELO Rust engine, challenge friends online or over local Wi-Fi, scan a board with the camera, and learn from 21 lessons and 42 puzzles. No account. No telemetry. The engine and your game history live on-device · online play is opt-in.
Everything in one app.
On-device by default.
Knight Rise is what every major chess site already does · but without the account or the tracking. The engine, analysis, lessons, and history run on your phone. Online friend play is there when you want it · always opt-in.
Game Review
Import a game by PGN, a game link, or a recent game · the engine grades every move and scores accuracy per side, all on-device
Coach Mode
Every move scored · best line, threats, plans · plain-language explanations
2300-ELO Engine
Native Rust engine on-device · four difficulty tiers · play from any FEN you paste
Online Friend Play
Play by link in any messenger (iPhone or Android), Game Center turn-based, or live via a linked lichess account · all free
Local Multiplayer
Same-Wi-Fi peer-to-peer · chat and emotes · no matchmaker, no server
Messages Play
Play a full chess game inside an iMessage thread · moves stay between you
Board Scanner
Point the camera at a real board or another screen · the vision pipeline writes the FEN for you
Share Extension
Share any screenshot to Knight Rise · the engine returns the best move inline
Browser Extension
Analyze the active tab on every major chess site · one-tap engine eval
Game History
Every game saved on-device · move-by-move replay, jump to any position, export as PGN
FEN Wallet
Save any position to play or study later · paste a FEN and open it in the viewer or against the engine
Learn Chess
4 interactive sections: board orientation, Pokemon-style piece cards with 3D tilt, 21 lessons covering rules and tactics, plus 42 practice puzzles. Always free.
Daily Puzzles
Hand-picked tactical sets · streaks and a difficulty curve · works fully offline
104 Achievements
Earn badges for captures, checkmates, streaks, and milestones. Stack a dozen earn paths to unlock up to a full year of Pro free. Syncs with Game Center.
Time Controls
Bullet, blitz, rapid, classical, or unlimited · Fischer increment · flag-fall by FIDE rules
Daily Goals
3 random goals every day · capture hunts, win targets, move challenges · resets at midnight · streak rewards
Three Languages
App UI localized in English, Spanish, and French
Offline When You Want
Single-player, study, scan, puzzles, and local play run with no internet · online friend play and game-link import use the network you choose
Private by Design
No account · zero telemetry · engine, analysis, and game history stay on your device
Replay any game
with a coach beside you.
Import a finished game by PGN, paste a game link (a lichess game URL works), or pick a recent game · Knight Rise runs it through the on-device engine and grades every move from Best to Blunder, with a per-side accuracy score. Each turn shows the best move square-to-square on the board, plus a plain-language key idea and the lesson to take away.
- Import by PGN, by game link, or pick a recent game
- Every move tagged: Best, Excellent, Good, Inaccuracy, Mistake, Blunder
- Per-side accuracy score and the best move shown on the board
- Plain-language coaching: the key idea and the lesson · reviews cached for instant reopen, with selectable depth
Review runs on-device · games you import by link are fetched from the link you choose.
See every move
the way a coach would.
Drop in a PGN, scan a board, paste a FEN, or just play · Knight Rise runs the position through a native Rust engine and a coach layer that names each move (Best, Good, Inaccuracy, Mistake, Blunder) and explains why. The engine is real, the explanations are written, the verdict is yours.
- 2300-ELO Rust engine that runs entirely on-device
- Move-by-move tags · Best, Good, Inaccuracy, Mistake, Blunder
- Suggested continuation lines with click-to-explore variations
- Play from any position · paste a FEN and take on the engine
The engine is yours · analysis runs on your phone.
Play a friend anywhere.
Online or across the table.
Send a game through any messenger with Play by Link · it works iPhone to Android. Take turns through Game Center, or go live through a linked lichess account with chat and reactions. Prefer offline? Pair up over local Wi-Fi or play a full game inside an iMessage thread. Every way to play a friend is free.
- Play by Link · send a game through any messenger, iPhone to Android
- Game Center turn-based on iOS · live online via a linked lichess account
- Local-Wi-Fi peer-to-peer and chess by iMessage still included
- Fair play: engine assistance is disabled during live online games
All friend play is free · online modes are opt-in.
Point the camera.
Get a position back.
A computer-vision pipeline reads a real-world chess board and writes the FEN for you. Detect the board corners, classify every piece, and hand the position straight to the engine for analysis · all on-device, no upload.
- Board-corner detection and perspective rectification
- On-device piece classification across pieces, sides, and squares
- One-tap export to analysis, play, or PGN
- Save the result to your FEN Wallet to study later
Vision runs locally · no photos uploaded, no third-party model calls.
Learn Chess, Your Way.
From beginner to confident player.
Four interactive sections guide you from board basics to advanced tactics. Explore the board, collect Pokemon-style piece cards with holographic 3D tilt effects, master 21 lessons on rules and tactics, and sharpen your skills with 42 practice puzzles. Every lesson is interactive with tap-to-play board demonstrations. Always free, no subscription required.
- Board orientation, coordinates, and FEN notation
- 6 collectible piece cards with 3D tilt and holographic shine
- 21 lessons: castling, en passant, forks, pins, back rank mates
- 42 curated puzzles from famous games to endgame challenges
The full Learn tab is free · no subscription gate.
104 Achievements to Earn.
Every move counts toward something.
104 achievements that reward everything you do: captures, checkmates, special moves, learning milestones, and daily goals. Plus 3 random daily challenges that reset at midnight to keep you coming back. Stack a dozen earn paths to unlock free Pro · up to a full year.
- Badges for captures, checkmates, castling, en passant, promotion
- 3 random daily goals every day: capture hunts, win targets, move challenges
- A dozen stackable earn paths for free Pro · up to a full year
- Apple Game Center integration
Earn paths reward free Pro · no strings attached.
Pay what you use.
Nothing more.
Free for play, all friend play, Game Review of your own games, the full Learn tab, daily puzzles, and 104 achievements. A one-time $0.99 unlocks in-app analysis. Pro adds the on-device vision pipeline and extensions · or earn it free through a dozen stackable paths.
Free
No account · forever free
Play the engine across all four difficulty tiers, challenge friends online or over local Wi-Fi, review your own games move by move, learn chess from scratch with 21 interactive lessons, and track your progress with 104 achievements. No sign-up required.
- Play vs the 2300-ELO on-device engine · all four tiers
- All friend play · Play by Link, Game Center, lichess, local Wi-Fi, iMessage
- Game Review of your own games · accuracy and coaching on-device
- Full Learn tab · 21 lessons, 42 puzzles, FEN Wallet
- Achievement tracking · 104 badges, Game Center sync, daily puzzle
- No account · no telemetry · single-player and local play work offline
Analysis
One-time · unlocks Analyze tab
Unlock the in-app Analyze tab with full engine evaluation, coach mode, and FEN tools. Pay once, keep forever. No subscription, no server round-trip.
- Everything in Free
- In-app Analyze tab with engine eval + candidate moves
- Coach Mode · plain-language move explanations
- Paste-FEN viewer with PNG export
Pro
3-day free trial
1-week free trial · save 30%
Lifetime · one-time
Everything in Analysis plus the on-device vision pipeline. Read any board from your camera or any other app, and analyze positions wherever you find them. Or earn it free · a dozen stackable earn paths add up to a full year of Pro.
- Everything in Analysis
- Board scanner · camera + screenshot vision pipeline
- Share extension · analyze from any app
- Safari extension · works on every major chess site
- Stack a dozen earn paths for free Pro · up to a full year
- Same engine, same coach · runs on-device
Start on Free · upgrade inside the app.
Prices listed in USD · regional pricing applies on the App Store and Google Play
Multiplayer is a library.
Read it. Fork it. Run it.
Knight Rise's local-Wi-Fi multiplayer doesn't reinvent the network layer · it sits on top of an open-source mesh transport we maintain in the open with the rest of the StealthOS project.
ConnectionPool
P2P mesh networking library · from StealthOS
Knight Rise's local-Wi-Fi multiplayer is built on top of ConnectionPool · the same open-source mesh library that powers pools and games in StealthOS. Local peers connect over the device's native peer transport with DTLS encryption · remote peers via a self-hosted relay with Noise NK and ChaCha20-Poly1305. No matchmaker, no account. (Online friend play uses Game Center, a linked lichess account, or Play by Link instead.)
On-device by default.
Online only when you ask.
No account, no tracking, and the engine, analysis, and your game history stay on your phone. The only time anything leaves your device is when you start it yourself · importing a game by link or playing a friend online.
No account
Open the app and you are in · no email, no sign-up.
No telemetry
Zero analytics, zero tracking, zero third-party marketing SDKs.
On-device
Engine, vision, analysis, and game history all run on your phone.
Online play is opt-in
The only network calls are ones you start · importing a game by link and online friend play.