chess2board vs Opening Prep
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
chess2board
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chess2board turns a photo of a chess board into a digital position in seconds. Point your camera at a physical board or an on-screen position—the app detects the pieces so you can review, correct, and use the position in your chess tools. FEATURES • Photo & screenshot: fast AI recognition of pieces and position • Board editor: fine-tune the position with drag-and-drop or tap-to-edit • Export: copy the FEN or generate a PGN for your engines and chess apps HOW IT WORKS • Open the app and photograph a position—from a book, a screen, or a live game. • Check the result on the interactive board and tap to fix any mistakes. • Copy the FEN, generate a PGN, or open the position in Lichess, Chess.com, and more. PLANS • The free tier gives you 2 scans—each slot recharges 24 hours after use—plus the board editor and FEN & PGN export. • GM mode (one-time in-app purchase, no subscription) unlocks unlimited scans, scan history, no ads, and priority processing—depending on what the app offers at the time of purchase. IMPORTANT Positions are produced by AI and may contain errors—always verify the position before using it in competition or for critical analysis. Download chess2board and go from any board to a usable digital position, easily. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Opening Prep
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Opening Prep: Chess Trainer is a chess opening trainer for studying and memorizing chess openings from your own PGN repertoire. Import PGN files or paste PGN text, organize your opening repertoire, and train chess lines move by move directly on the board. Opening Prep: Chess Trainer is built for focused opening preparation, repertoire study, and fast memorization of opening variations. Train as White, Black, or both sides, review repertoire trees, continue previous training sessions, and improve difficult positions with targeted repetition. Perfect for tournament preparation, online chess, and daily opening practice. Features • Import chess repertoires from PGN files • Paste PGN text directly into the app • Train chess openings as White, Black, or both • Practice opening lines move by move • Continue previous training sessions anytime • Continue training for a specific repertoire • Study repertoire trees and branching variations • Preview repertoire lines before training • Autoplay repertoire variations on the board • Tap moves in notation to jump to any position • Track mistakes, accuracy, and training streaks • Train difficult positions and weak opening lines • Quick actions for new sessions and hardest positions • Optional move sounds and haptic feedback • Works fully offline with local storage • No account required Opening Prep: Chess Trainer is a lightweight PGN repertoire trainer designed for serious chess opening preparation without unnecessary complexity.
Screenshots
Verdict
The clearest difference is in-app purchases: Opening Prep at none against chess2board's 1. Opening Prep also leads on ads (none vs shown) and update cadence (every 3 days vs every 11 days). On price, device support and iOS requirement 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. chess2board sells 1 one-off in-app purchase. Opening Prep asks for nothing beyond the download.
chess2board ships an update every 11 days, Opening Prep every 3 days. The most recent releases landed on September 15, 2026 and September 5, 2026 respectively.
| Parameter | chess2board | Opening Prep |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 11 days | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.6 |
| Further details — not scored | ||
| Size | 39 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Vincent Asselin | Roman Bogatenko |
In-app purchases
chess2board
- chess2Board GM Mode$4.99
Opening Prep
No in-app purchases
Questions
Is chess2board free?
Is Opening Prep free?
Do chess2board or Opening Prep have ads?
Which is updated more often, chess2board or Opening Prep?
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