Comparison

Chess Prep Pro Openings vs ChessBase Mobile Chess

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Chess Prep Pro Openings

Master chess openings by building custom repertoires and training your memory. Analyze opponent moves, discover blind spots, and utilize an advanced engine for in-depth preparation. Expand your knowledge with downloadable repertoires and import/export PGNs.

Highlights
  • Custom chess opening repertoires
  • Repertoire training and memory sharpening
  • Blind spot finder against player games
  • Chess openings player database
  • Advanced StockFish engine analysis
  • Downloadable and importable repertoires
Features
Read full description

Master chess openings: Build chess opening repertoires & memorise your openings.Chess Prep Pro is the ultimate chess openings app, designed to perfect your openings and elevate your game through custom chess opening repertoire creation and training. How does it work? Chess Prep Pro allows you to create your own custom chess openings repertoires, and prepare for any opponent move. A chess opening repertoire is an opening plan that contains player responses for opponent moves in the opening phase of the game. With a chess opening repertoire, you will not be left scrambling to find the best move during a real game, as you will already remember the best move from studying and practicing your repertoire. Discover Chess Prep Pro's Features: - Custom Chess Opening Repertoires: Build unlimited custom repertoires for any chess opening. Add as many moves and variations as you need to be prepared for every game. - Repertoire Training: Sharpen your memory with chess opening repertoire training. The app challenges your memory with random positions from your opening repertoire, tracking your progress and helping you master every move. - Blind Spot Finder: Stay ahead of your opponents with our blind spot finder feature that analyses your chess openings repertoire against billions of player games, identifying the most likely opponent moves that you did not prepare for. - Chess openings player database: You can use a player openings database that contains billions of moves to find out the most likely opponent move to prepare for. - Advanced Engine: Utilize the latest StockFish engine for in-depth analysis and uncover the best responses to any situation on the board. - Downloadable opening repertoires: Expand your opening knowledge with an ever-growing library of specially created and sourced opening repertoires, curated for your success. - Import / Export: Easily import and export PGNs to and from the app. You can even import liches studies. Master your chess openings now !

About

ChessBase Mobile Chess

Access a vast chess game database, save and analyze your own games, and practice openings. This app offers advanced notation and sharing features, with a free tier and optional premium upgrades for more extensive cloud storage and search capabilities.

Highlights
  • Access 13+ million chess games
  • Save and sync personal game databases
  • Analyze games with built-in engine
  • Live opening book statistics
  • Create and practice opening repertoires
  • Advanced game notation and sharing
  • PGN file compatibility
Features
Read full description

ChessBase Mobile is the training, playing, and analysis platform for chess players who track their progress by the numbers. ChessBase Mobile is built by ChessBase, the company behind the standard desktop software used by world champions and club players alike for over 30 years. Solve tactics puzzles rated by difficulty and watch your Elo rise or fall with every attempt. No participation trophies, your rating reflects exactly where you stand. The tactics database draws from positions in real games, not synthetic exercises, so the patterns you train are the patterns you encounter at the board. Puzzle Fight puts you head-to-head against another player in a timed series of 24 tactical positions. Both players solve the same puzzles simultaneously. The one who solves more, faster, wins - and gains Elo. Structured competition, not a casual minigame. Play live games in Blitz and Rapid formats against opponents worldwide. Premove support, clean interface, no clutter. The ChessBase Online Database contains over 14 million games. Search by player, position, or opening. Review grandmaster games, study endgame structures, track opening trends - the same database used by professionals, accessible from your phone. Cloud analysis with several engines, including Fritz and Lc0. Basic cloud analysis with Fritz is free. For deeper analysis, scalable cloud servers are available, from Large to Gargantuan, paid per minute in ducats. Lc0 brings neural network evaluation for positions where classical engines struggle. The engine panel shows evaluation, depth, and principal variation. Build and maintain your opening repertoire in the cloud. 300 opening overviews with repertoire suggestions help you get started with new systems. A live opening book provides up-to-date statistics for every position. Three practice modes let you drill your variations until they stick. Annotate your games with comments, symbols, variations, arrows, and markings. Save games and analyses in cloud databases that synchronise across all your devices. Share positions and games via link, image, GIF, FEN, QR code, or PGN. Upload and download PGN files for full compatibility with desktop software. AI Kibitzer provides live commentary during games and puzzles — with personality. Chess-legend anecdotes, opinions, the occasional bad joke. Like a friend with too much chess trivia sitting next to you. Audio output included. Available in 27 languages. Customisable board colours, piece sets, and notation display. Light and dark mode across all screens, or set to follow your device preference. No ads. No energy systems. No artificial gating. Open the app, train, close the app. Free to use, all functions are available at no cost. ChessBase Premium unlocks expanded cloud storage and unlimited database search results. Free: search the online database (max 50 games displayed), up to 10 cloud databases (10 MB total), cloud clipping for up to 10 games. Premium: unlimited database search, up to 200 cloud databases (500 MB total), cloud clipping for up to 400 games. Privacy policy: https://en.chessbase.com/pages/security Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Chess Prep Pro Openings4 screens
ChessBase Mobile Chess4 screens

Verdict

The call

The clearest difference is rating: Chess Prep Pro Openings at 4.5 against ChessBase Mobile Chess's 2.9. Chess Prep Pro Openings also leads on review sentiment (75% vs 41%) and update cadence (fortnightly vs every 6 months). ChessBase Mobile Chess's advantage is ads (none vs shown). On price, ratings volume, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Chess Prep Pro Openings sells 3 in-app purchases, starting at $3.99 per month and ChessBase Mobile Chess sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Chess Prep Pro Openings holds the better App Store score, 4.5 against 2.9. Both are backed by a comparable volume of ratings — 22 and 18 respectively. Written reviews point the same way: 75% of Chess Prep Pro Openings's written reviews are positive against 41% of ChessBase Mobile Chess's.

UpkeepUpdate frequency

Chess Prep Pro Openings ships an update fortnightly, ChessBase Mobile Chess every 6 months. The most recent releases landed on October 19, 2026 and October 18, 2026 respectively.

Scorecard4 real differences · 6 level
Chess Prep Pro Openings versus ChessBase Mobile Chess: the parameters behind the verdict, then further details
ParameterChess Prep Pro OpeningsChessBase Mobile Chess
PriceFreeFree
Rating4.5 (22 ratings) — better2.9 (18 ratings)
Positive reviews75.0% of reviews — better40.6% of reviews
Number of ratings22 — better18
Update frequencyFortnightly — betterEvery 6 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size214 MB1 MB
Age rating4+4+
DeveloperTomasz BogunChessBase GmbH

Customer experience

Chess Prep Pro Openings

All ratings22 ratings
Positive86.4%
Neutral4.5%
Negative9.1%
Written reviews24 reviews
Positive75.0%
Neutral4.2%
Negative20.8%

ChessBase Mobile Chess

All ratings18 ratings
Positive44.4%
Neutral5.6%
Negative50.0%
Written reviews32 reviews
Positive40.6%
Neutral0.0%
Negative59.4%

In-app purchases

3 purchases

Chess Prep Pro Openings

Subscriptions2
  • Monthly premium subscription$3.991 Month
  • Yearly premium$24.991 Year
One-time1
  • Lifetime Premium$59.99
1 purchases

ChessBase Mobile Chess

Subscriptions1
  • ChessBase Premium (Monthly)$3.991 Month

Questions

Is Chess Prep Pro Openings free?
Chess Prep Pro Openings is free to download, with in-app purchases available.
Is ChessBase Mobile Chess free?
ChessBase Mobile Chess is free to download, with in-app purchases available.
Which has better reviews, Chess Prep Pro Openings or ChessBase Mobile Chess?
Chess Prep Pro Openings is rated higher. Chess Prep Pro Openings averages 4.5 out of 5 from 22 ratings, while ChessBase Mobile Chess averages 2.9 from 18 ratings.
Do Chess Prep Pro Openings or ChessBase Mobile Chess have ads?
Chess Prep Pro Openings shows ads; ChessBase Mobile Chess does not.
Which is updated more often, Chess Prep Pro Openings or ChessBase Mobile Chess?
Chess Prep Pro Openings ships an update fortnightly, and ChessBase Mobile Chess every 6 months. Most recently, Chess Prep Pro Openings was updated on October 19, 2026 and ChessBase Mobile Chess on October 18, 2026.

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