Chess Clock

Time games of over-the-board chess

GameBoard & CardsRecently updated on Flathub

Actively maintained

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About

Chess Clock is a simple application to provide time control for over-the-board chess games. Intended for mobile use, players select the time control settings desired for their game, then the black player taps their clock to start white's timer. After each player's turn, they tap the clock to start their opponent's, until the game is finished or one of the clocks reaches zero.

Changelog

Runtime update and translations - Update to GNOME 51 runtime - Add brandcolors and maintenance updates, thanks to Brage Fuglseth - New and updated translations.

Required configuration

Requires: a screen with its shortest side at least 360 px, offline use only. Supports: mouse or touchpad, keyboard, touch screen.

Additional information

Project

Developer: Evangelos Ribeiro Tzaras
License: GPL-3.0-or-later (free software)What this license lets you do
Homepage: gitlab.gnome.org/World/chess-clock
From the project: Report a bug Source code Contribute Help translate
Latest release: October 10, 2026 (9 days ago)Actively maintained · 2 releases in the last year
Release history: Last 4 releases
0.6.3October 10, 2026
0.6.2October 31, 2025
0.6.1September 13, 2024
0.6.0September 27, 2023
Languages: 44 languages

Install

Size: 506.1 KB
Installs: 12,647 on Flathub80 in the last 7 days
Available via: Flatpak · Arch Linux · Nixpkgs
Flatpak sandbox: Limited access
Runs in a sandbox with no access to your personal files or devices beyond what's listed.

About this data

Sources: 4 independent sources agree
Catalog data as of: October 12, 2026

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How each source lists it (3)

Source	Name	Version	Built by	License	Description
Flathub (Flatpak)	Chess Clock	0.6.3	Official build	GPL-3.0-or-later	Time games of over-the-board chess
Arch Linux	chess-clock	0.6.3-1	Distribution build	GPL-3.0-or-later	Simple application to provide time control for over-the-board chess games
Nixpkgs	chess-clock	0.6.2	Distribution build	GPL-3.0-or-later	Time games of over-the-board chess