ChessFlow vs VocalChess
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
ChessFlow
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ChessFlow is the training app built for tournament players - openings, middlegames and endgames - and the only one that lets you drill them on a real electronic chessboard. Train your lines on screen, or connect your Chessnut board over Bluetooth and practice with real pieces in hand, guided by the board's LEDs. Then let spaced repetition bring each line back right before you'd forget it, so your prep actually sticks. TRAIN ON A REAL ELECTRONIC BOARD Connect your Chessnut (Go, Air, Air+, Pro) and train with the pieces in your hands. The LEDs guide you - steady light for your opponent's move, a blink for a hint, a fast blink when the app plays the move for you. Make a mistake? Retry, ask for a hint, or let the app show you. REMEMBER YOUR OPENINGS WITH SPACED REPETITION ChessFlow uses an SM-2 algorithm adapted for chess openings: every line returns right before you're likely to forget it. Only a perfect run speeds up the schedule; anything shaky comes back tomorrow. No line ever disappears for months. A seven-day forecast shows how many lines come due each day, so you always know when a backlog clears. DRILL YOUR WEAK SPOTS ChessFlow tracks the positions where you go wrong most often and serves them back as targeted puzzles. Turn on Drill random positions for an endless stream of positions from the lines you've trained in the open repertoire - a fast way to keep it sharp. PRACTICE ANYWHERE ON THE VIRTUAL BOARD No hardware needed. Train on screen with tap-to-move and premove, just like chess.com and lichess. Your iPad becomes a training station; your iPhone keeps your repertoire in your pocket. PLAY IT OUT AGAINST STOCKFISH Stop anywhere in a line and play the position out against Stockfish 19, at a strength you choose. Explore variations in free analysis, with a slim evaluation bar beside the board, and export them. With ChessTools, our free clock app, on your iPhone, ChessFlow presses the clock for you. YOUR REPERTOIRE, FROM ANY SOURCE Keep building your repertoire in the chess app you already use - Chess Studio, for example. Link its iCloud folder and ChessFlow reads those PGN files without ever changing them: you study and edit there, you train here. Add a variation there and it's waiting the next time you open the file, with all your progress kept. You can also import single PGN files or paste FEN positions. Attach a course PDF or your notes to any repertoire; PDFs even reopen at the page you left, on every device. BUILT TO KEEP YOUR DATA SAFE Everything syncs across your iPhone and iPad via iCloud - lines, progress and colors. Training progress is merged across devices, never overwritten. Automatic daily backups, plus manual export and import. EXPORT & SHARE Copy or share your lines as PGN for lichess and chess.com. Export your games versus the computer as PGN or a tournament-style PDF scoresheet. Free to try, with a 14-day full-access trial. Subscriptions unlock unlimited training on the virtual board, or everything including the physical board. Requires iOS 17 or later. iPhone and iPad, one app. Questions or feedback? developer@chesstools.it Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.chesstools.it/chessflow/privacy.html
VocalChess
Play chess hands-free by speaking your moves. The app recognizes voice commands for piece movements, captures, castling, and promotions. It's designed for blindfold training and offers an offline, private experience.
- Speak chess moves naturally
- Hands-free gameplay
- Blindfold training mode
- Offline and private operation
- Adjustable engine difficulty
- Move history navigation
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Play chess against a chess engine on your iPhone by speaking your moves. Say "knight f3", and the move lands on the board. The engine answers aloud, so you can keep your eyes off the screen. VocalChess is built for players who want to play hands-free and train blindfold: holding the position in your head. Say it the way you think it • Pieces: "knight f3", "bishop takes e5", "knight b takes d2". • Pawns: "e4", "e takes d5". When only one move can capture on a square, "takes d5" is enough. • Castling: "castle kingside", "castle queenside". Promotion: "e8 promotes to queen". • Your words appear on screen as you speak, and the app waits while you pause mid-move. • Say "undo" or "take back" to take a move back, or "resign" to end the game. You can also tap the board. It asks before it guesses • When the app is sure, the move plays at once. • When it isn't, it asks "Did you say …?" and you answer yes or no, by voice or by tap. • When nothing legal matches what it heard, it shows "Say again". It never plays a move you did not say. Choose your game • Tap the play button for a new game: pick one of six levels, from Novice to Master, and play as White, Black or Random. • Step back through the game with the move buttons, or say "back", "forward", "start" or "latest". Looking back never changes the game. • Close the app mid-game and pick up where you left off. Hear the game • The engine's reply is read aloud in a natural voice that runs on your iPhone: "Black, knight f6". Check and the result of the game are read too. • Turn on "Speak my moves" to hear your own moves read back as well. • You can talk over the app while it speaks. Blindfold • Tap the eye to hide the pieces. The squares and coordinates stay; the position lives in your head. • With the board hidden, every move is read aloud, yours included. Private and offline • No account, no ads, no tracking, no in-app purchases. The app sends only anonymous usage counts, never what you say, and Settings turns them off. VocalChess runs on iPhone with iOS 26.5 or later, and hears and speaks moves in English. The open-source licences of the software the app ships, including the chess engine's source link, are in Settings → Apps → VocalChess → Acknowledgements.
Screenshots
Verdict
The clearest difference is in-app purchases: VocalChess at none against ChessFlow's 4. ChessFlow's advantage is update cadence (every 4 days vs every 8 days) and iOS requirement (17.0 vs 26.5). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. ChessFlow sells 4 in-app purchases, starting at $4.99 per month. VocalChess asks for nothing beyond the download.
ChessFlow ships an update every 4 days, VocalChess every 8 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.
| Parameter | ChessFlow | VocalChess |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 4 days — better | Every 8 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 26.5 |
| Further details — not scored | ||
| Size | 202 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Giorgio Donnoli | STUDIO MARABEL LLC |
In-app purchases
ChessFlow
- ChessFlow Virtual$4.991 Month
- ChessFlow Premium$8.991 Month
- ChessFlow Virtual$29.991 Year
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- ChessFlow Premium$49.991 Year
VocalChess
No in-app purchases









