Comparison

Chess Prep Pro Openings vs Chess Clock & Chess Timer

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

Chess Clock & Chess Timer

This app provides a tournament-ready chess clock for over-the-board games. It offers customizable time controls, including increments and delays, and features like time odds for balancing skill levels. Enjoy a clean interface with sound cues and mid-game adjustments for a distraction-free experience.

Highlights
  • Tournament-ready chess clock
  • Customizable time controls (increment, delay)
  • Time odds for uneven matchups
  • Presets for various game speeds
  • Mid-game adjustments
  • Offline and low battery impact
Features
Read full description

Chess Timer is a fast, tournament-ready chess clock built for OTB (over-the-board) games. Pick a preset for bullet, blitz, rapid, or classical, or build advanced time controls with increment and delay. Use Fischer increment, Bronstein, or simple delay, plus sudden death and multi-stage time control setups like 40 moves in 2 hours + rest of game. Play with kids or balance skill levels using time odds (time handicap) with different time per player. Enjoy stunning themes with high-contrast readability for tabletop mode, crisp sound cues, and quick mid-game adjustments. Features • One-tap turn switching with clear visual states and optional sounds • Presets for bullet, blitz, rapid, classical • Fischer increment, Bronstein, and delay • Multi-stage time controls and move-control setups (example: 40/120) • Time odds (time handicap) for uneven matchups, ideal for kids • Pause, reset, and add or subtract time mid-game • Offline, low battery impact, clean distraction-free UI • Also great for 2-player board games like go, shogi, Scrabble, checkers, backgammon, chess timer Easy to play chess: 1. Choose a preset or set base time, increment, delay, and stages. 2. Place the phone between players and tap to start. 3. Tap after each move to switch, pause anytime, adjust if needed. Terms Of Use: https://www.appside.io/chesstimer/termsandconditions.html Privacy Policy: https://www.appside.io/chesstimer/privacypolicy.html

Screenshots

Chess Prep Pro Openings4 screens
Chess Clock & Chess Timer4 screens

Verdict

The call

The clearest difference is ads: Chess Clock & Chess Timer at none against Chess Prep Pro Openings's shown. Chess Clock & Chess Timer also leads on review sentiment (100% vs 75%). Chess Prep Pro Openings's advantage is update cadence (fortnightly vs every 6 weeks) and rating (4.5 vs 4.3). 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 Chess Clock & Chess Timer sells 2 in-app purchases, starting at $3.99 per 7 days. 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 4.3. Both are backed by a comparable volume of ratings — 22 and 20 respectively. Written reviews complicate that: 75% of Chess Prep Pro Openings's written reviews are positive against 100% of Chess Clock & Chess Timer's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Chess Prep Pro Openings ships an update fortnightly, Chess Clock & Chess Timer every 6 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
Chess Prep Pro Openings versus Chess Clock & Chess Timer: the parameters behind the verdict, then further details
ParameterChess Prep Pro OpeningsChess Clock & Chess Timer
PriceFreeFree
Rating4.5 (22 ratings) — better4.3 (20 ratings)
Positive reviews75.0% of reviews100.0% of reviews — better
Number of ratings22 — better20
Update frequencyFortnightly — betterEvery 6 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17
Further details — not scored
Size214 MB9 MB
Age rating4+4+
DeveloperTomasz BogunMaksym Farynets

Customer experience

Chess Prep Pro Openings

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

Chess Clock & Chess Timer

All ratings20 ratings
Positive80.0%
Neutral5.0%
Negative15.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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
2 purchases

Chess Clock & Chess Timer

Subscriptions2
  • 3 Days Free3 Days trial$3.997 Days
  • Premium Annual$49.991 Year

Questions

Is Chess Prep Pro Openings free?
Chess Prep Pro Openings is free to download, with in-app purchases available.
Is Chess Clock & Chess Timer free?
Chess Clock & Chess Timer is free to download, with in-app purchases available.
Which has better reviews, Chess Prep Pro Openings or Chess Clock & Chess Timer?
Chess Prep Pro Openings is rated higher. Chess Prep Pro Openings averages 4.5 out of 5 from 22 ratings, while Chess Clock & Chess Timer averages 4.3 from 20 ratings.
Do Chess Prep Pro Openings or Chess Clock & Chess Timer have ads?
Chess Prep Pro Openings shows ads; Chess Clock & Chess Timer does not.
Which is updated more often, Chess Prep Pro Openings or Chess Clock & Chess Timer?
Chess Prep Pro Openings ships an update fortnightly, and Chess Clock & Chess Timer every 6 weeks. Most recently, Chess Prep Pro Openings was updated on November 3, 2026 and Chess Clock & Chess Timer on November 5, 2026.

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