# Chess Clock (Merkmatics) > Accurate, customizable, and user-friendly game clock for two-player timed games. (iPhone/iPad app by Merkmatics.) - Source: https://appshunter.io/ios/app/chess-clock-merkmatics/id347870076 (this page in markdown: same URL + `.md`) - Developer: [Merkmatics](https://appshunter.io/developer/347870079) - Category: Utilities, Games - Price: $0.99 - Rating: 4.70/5 from 12 App Store ratings · 52 written reviews indexed - Age rating: 4+ - Requires: iOS 6.0 · 6 MB - Languages: American English - Released: 2009-12-24 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/chess-clock-merkmatics/id347870076/reviews.md ## What is Chess Clock (Merkmatics)? A World-Class Game Clock for iOS. Updated for iOS 8 and the new iPhone 6 and 6 Plus. The most accurate, high performance, customizable and user friendly game clock on the App Store. It provides the highest accuracy timing that iOS allows and has more features than any other game clock on the App Store. If you think there's a feature missing let us know and we'll consider adding it. If you like the app please write a review or give it a rating. If you have any difficulty using the app or you want a new feature let me know at support@merkmatics.com. I’m grateful for your comments and support. ---------------- Features ----------------- * Individually customizable clocks for each player that allow configuration of: --- Start time --- Increment/delay time --- Increment sound (turn sound on and off as well as sound choice) --- When to begin displaying tenths of a second * Accurate to a 1000th of a second * Displays the number of moves each player has completed * Times and increments can be set with 1 second resolution * Ability to select which player starts the game * Negative Time --- Clocks can count below zero --- This is a configurable setting (off by default) * Ability to turn off the end of game sound * Compatible with iOS 6 and above ------ Delay Settings ------ * USCF Delay (clock doesn't start counting down until the delay is over). Time left in the delay is displayed clearly. * Fischer compensation (time added per turn accumulates) * Bronstein compensation (time added per turn does not accumulate) * No compensation (just set the increment time to zero) * Configurable Increment Notification System --- Screen flashes and a quiet sound is played when your increment runs out --- Individually configurable, each player can choose to have no decide if they want to disable the increment notification or can choose between 3 different sounds ----- Handles interruptions smoothly ----- * Never lose your place in the game. Games are saved when you receive a call or close the app and restored when you reopen the Merkmatics Chess Clock. * Games can be easily paused and resumed at a later time ------ Simple, Elegant look and feel ------ * The active player's timer turns green or blue when their turn begins * A subtle "click" sounds, when you complete your turn, just like a real chess clock * Two end of game sounds, a simple two-tone beep and a old school video game sound * Small secondary display shows your opponents remaining time * About page that allows you to email support from inside the App ------ Intelligent Power Management ------ * Clock is optimized to improve battery life * iPhone/iPod Touch won’t dim or lock during a game * Still dims and locks when a game is paused to conserve power * Option to use a black background to save power I use the Merkmatics Chess Clock primarily for chess but it will work for any two-player game where you want to add a time component to the game play. It will work well with Go, Scrabble, Checkers, Backgammon and many other games. If you would like to request a new feature, report a bug, or if you have suggestions about how to improve the app please let me know at support@merkmatics.com. Thank you for downloading Merkmatics Chess Clock, I hope you enjoy it. ## Key features - Individually customizable clocks - Configurable start time and increment/delay - Accurate to 1000th of a second - Displays move count - Handles interruptions and saves game progress - USCF Delay, Fischer, and Bronstein compensation options ## Recent user reviews (10 of 52) All indexed reviews: https://appshunter.io/ios/app/chess-clock-merkmatics/id347870076/reviews.md ### 5/5 — good clock, and Voice-Over friendly *2024-06-16* Easy to set and use. Most importantly, one of the most Voice-Over friendly chess clock apps. Blind chess players need a clock we can use, and stand alone models are in excess of $300! That was NOT a typo! The only addition might be the ability to create custom time controls, such 40 moves in 2 hours, followed by 20 moves in 1 hour, then having to mate the opponent in 1 hour regardless of the number of moves it takes. You've done GREAT work with this BLIND FRIENDLY app! ### 5/5 — Yes! *2016-06-10* Was looking online for a backgammon clock. Ha! It's frickin perfect! ### 5/5 — Best chess clock, period *2016-03-21* This does everything a chess clock needs to do. Better than analog, because it's easier to read when in a hurry! Keep better track of time and defeat your opponent by managing your clock! ### 5/5 — Nice *2015-09-26, version 3.0.0* Better than the free one by chess.com, does everything you want it to and more, worth my 80p. ### 5/5 — Will replace my Chronos clock. *2015-04-25* This clock is not only easy use, it is fully featured. It includes the ability to add a grace period delay. That is essential for the backgammon tournaments that I play in. As a tournament director, ease of setup is critical. Otherwise, you spend your time adjusting clocks rather than directing the tournament. Love this clock and no longer need to carry my Chronos to tournaments. ### 5/5 — Very useful *2015-03-23* Very good chess clock. ### 5/5 — Best chess clock app! *2015-01-09* Hands down, this is the best chess clock app out there! Very intuitive. The app has a clean look and has every possible timer setting you could want. Large buttons make it easy to see how much time you and your opponent have. ### 5/5 — It's great. *2014-12-20* Works great on both iPad and iPhone. Saved me $100 from having to buy a real chess clock! ### 5/5 — My only complaint ... *2014-12-20* ... is having purchased an expensive physical chess clock that now sits unused since getting this outstanding app. ### 5/5 — Best chess clock *2014-12-20, version 3.0.0* Having looked at many others, this is easily the best chess clock app in current development that I have found. It does not ape a mechanical clock, it has a simple, clear distraction-free interface, and most of the options you'd ever want for setting timing type, with the option of asymmetrical timings. The recent update has refined it some more, and the dev listens. (Only Marcel Nijmen's Game Time rivals it for me, and that has not been updated for 5 years.) ## Frequently asked questions about Chess Clock (Merkmatics) ### What does this app do? This app functions as a world-class game clock designed for iOS devices. It provides highly accurate timing for two-player games, offering extensive customization options for each player's clock settings, including start time, increment/delay, and sound notifications. ### What are the key features of this game clock? Key features include individually customizable clocks for each player, accurate timing to a thousandth of a second, display of move counts, and support for various delay settings like USCF Delay, Fischer compensation, and Bronstein compensation. It also smoothly handles interruptions, saving and restoring game progress. ### How much does this app cost? Based on the provided information, this application is a paid app. There are no mentions of in-app purchases or advertisements, indicating a one-time purchase for full functionality. ### What devices is this app compatible with? The app is compatible with iOS 6 and above. It has been updated for iOS 8 and supports newer devices like the iPhone 6 and 6 Plus, ensuring a modern user experience. ### What types of games can I use this clock for? While primarily designed for chess, this app is suitable for any two-player game where a time component is desired. This includes games like Go and other strategy board games where precise timing is essential for fair play. ## Version history (last 5 releases) ### 3.0.0 — 2014-12-19 This app has been updated by Apple to display the Apple Watch app icon. This is a significant update to the Merkmatics Chess Clock. The look and feel of the clock has been updated to a style consistent with iOS 7 & 8, the clock settings are now position based and the icon has updated. Settings for the clocks are now based on position, the clocks are labeled A and B and the positions of the clocks are fixed. Before a game starts the clocks are labeled for clarity. Starting a game has not changed, whomever touches their clock first is Black and the opposing player is White. I understand that everyone is busy but if you could take a moment to write a review the App it would be greatly appreciated. Your reviews have an ENORMOUS impact on the reputation and continued success of the Merkmatics Chess Clock. If you don't have time to write a review you can also simply rate the App by choosing a star rating and hitting submit. You can easily navigate to the app by touching the App's icon (next to these words) after updating. I am going to be adding some features in the near future so stay tuned. If you have a suggestion for a new feature or want to advocate adding something, now is a great time to let me know at support@merkmatics.com. I would like to thank Matt McNeil, Rolf Exner and Abe Farraj for their input on the features in this release as well as for their help beta testing the App. I am extremely grateful for all of the loyal users of the Chess Clock. Thank you all for your suggestions and I wish you luck in your games, whatever you happen to be playing. Mat ### 2.92 — 2014-11-03 Bug fix for iOS 8.1. I would like to thank Abe Farraj for bringing the issue to my attention as well as for his help testing the fix. I would like to apologize for the crashing bug some iOS 8 customers were experiencing. I'm very sorry about any inconvenience it may have caused. The issue didn't occur on my devices running iOS 8 nor the simulators Apple provides so I didn't know about the issue until recently. Once I knew about the problem it was difficult to track down since I couldn't reproduce the issue. With Abe's help I was able to track down the issue and test the fix. To try to ensure that this does not happen again I would like to setup a Beta Test Group that will receive App releases for testing before they are submitted to Apple. If you are interested in joining this Beta Test Group please email support. (support@merkmatics.com) I understand that everyone is busy but if you could take a moment to write a review the App it would be greatly appreciated. Your review will have a huge impact now considering the recent issue. If you don't have time to write a review you can also simply rate the App by choosing a star rating hitting submit. I am extremely grateful for all of the loyal users of Merkmatics Chess Clock. Thank you all for your suggestions and I wish you luck in your games, whatever you happen to be playing. Mat ### 2.90 — 2014-09-16 Updates for iOS 8 and bug fixes. More updates coming soon. Please consider writing a review or rating the app, every positive rating helps a lot. ### 2.10 — 2013-04-05 Added the option to make increment notification silent. ### 2.9 — 2013-01-30 Remaining delay time is shown when in USCF delay mode. More updates are coming in the next few weeks. I would like to thank Richard Munitz for suggesting this improvement. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*