chess.ceo vs Chess Clock

Whether you're a beginner learning openings or a tournament player preparing for your next opponent, Chess.ceo gives you professional chess analysis tools right on your phone. Engine Analysis Analyze any position with Stockfish, the world's strongest chess engine, running locally on your device, no internet required. Need more power? Cloud Engines let you run analysis on a dedicated cloud machine, billed per minute and only while it's running. 14M Game Database Explore over 14 million master-level games with real-time opening statistics. For any position, instantly see which moves were played, how often they led to wins, and at what rating level. Filter by rating range and time control to find data relevant to your level. Endgame positions are covered by seven-piece Syzygy tablebases showing perfect play with distance-to-mate. Opponent Preparation Search any player by name, country, or FIDE title. View their game history, ratings, and most-played openings. Study their repertoire and identify weaknesses before your next tournament game. Link players across FIDE, Lichess and Chess.com profiles. Live Tournament Broadcasts Follow ongoing tournaments with live game boards, per-board evaluation bars, and live standings. Jump straight into any player's games while a round is in progress. Full Game Analysis Import games via PGN, paste from clipboard or load from file. The engine evaluates every move and shows where mistakes were made. Build a complete variation tree with main lines and sidelines, annotate key moments, and save your analysis for later. PGN Files Organize your analyzed games into files and folders, synced across devices when you sign in. Import hundreds of games at once, or export to share with coaches and training partners. Additional Features • Chess960 (Fischer Random) with one tap • Chess clock with customizable time controls • Position editor for setting up any position • Search games by position across your files • Landscape and tablet support • Seven languages: English, German, Spanish, French, Russian, Chinese, and Arabic Free to Use All of the above is free, no ads. Create an account and start analyzing. CEO Tier: Optional Subscription For players who want more: • Pro Board: full-screen, distraction-free analysis • Full database offline: all 10 million games on your device, no connection needed • Higher daily limits on search, preparation, and database queries • More storage for your PGN files Subscribe monthly, cancel any time. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://chess.ceo/docs/tos Privacy Policy: https://chess.ceo/docs/privacy

Chess Clock times your games and records each result for you, like a paper scoresheet. Chess groups can run their club in it too. A serious clock • Presets from bullet to classical, plus your last three controls one tap away • Fischer increment, US delay and Bronstein delay • Tournament stages ("after 40 moves, add 30 minutes") with a live countdown to the next stage • Accurate to the tenth of a second, immune to timer drift • Low-time warnings that scale to the control, with distinct haptics at each handoff, at ten seconds and at five • Clock sounds: a click on each move, ticks at ten seconds and at five, a tone when a flag falls. They play on silent; the speaker button turns them off • Big mirrored display, portrait and landscape; the waiting side dims so you know whose move it is • Two layouts: Face to face, or Side of the board, with both times facing one edge for a phone lying beside the board • Pause, then lock the phone: both times stay on the Lock Screen. Quit the app and the game is still paused when you come back An automatic scoresheet • Enter names once. The app records every finished game with result, control, move count and how it ended • Win / loss / draw totals per player, head-to-head for every rivalry • Tap any game for its move-time timeline: how long each move took, both sides. It marks the longest think and the sharpest time-trouble stretch Clubs, for real-world chess groups • Create a club, publish it, and let members find it by name or by scanning its QR code • A results table with continuous Elo ratings that the app updates as members play • Club nights with RSVP, a looking-for-a-game signal, and a recap you can share as an image • A rated member directory, an activity feed, and moderation tools for owners and admins • Time-odds suggestions when two rated members sit down together Friends and nearby play • Nearby phones find each other when you start a game, so you pick your opponent instead of typing a name • Exchange finished games with a nearby friend, phone to phone, with no internet involved Your data No account to create and no ads. The clock and scoresheet live on your phone. For clubs, the app uses your iCloud sign-in as your identity and stores club data (names, rosters, results) in Apple's iCloud. We run no servers. You can delete your club data from inside the app at any time. Backups Export everything the app holds to one file and keep it wherever you keep your files. Restore it on a new phone, or after a reinstall, and your record comes back. You encrypt each backup with a password you choose; without it, nobody can open the file. Chess Clock Pro (one-time purchase, no subscription) • Custom time controls: any base time, increment, delay style and tournament stage • Full match history and the move-time timeline for every game • Head-to-head breakdown of every rivalry • Six premium themes: Tournament, Ocean, Midnight, Blossom, Iris and Coral Chess Clock comes in 43 languages, from Arabic to Vietnamese.