Chess Clock by ChessRank

ChessRank Chess Clock
A professional, full-featured chess clock for serious players — tournament-ready, beautifully designed, and completely offline.

CORE FEATURES

14 Built-In Time Controls
From bullet to classical — 1 min, 1+1, 2+1, 3 min, 3+2, 5 min, 5+5, 10 min, 15+10, 20 min, 30 min, and delay-based presets (5+5s delay, 25+5s delay, 90+30s delay). One tap to select, one tap to start.

Custom Time Controls
• Simple mode — set hours, minutes, seconds, increment, and delay
• Advanced mode — build multi-stage time controls (like FIDE classical: 40 moves in 2 hours, then 1 hour to finish), with per-player independent settings
• Supports Fischer, Bronstein, and Delay timing modes

Dual Orientation
• Vertical — standard portrait mode
• Horizontal Left / Right — sit across the board, each player reads their time right-side up

Smart Display
• Active player glow with animated pulse
• Tenths-of-a-second precision under 10 seconds
• Color-coded urgency — orange under 20 seconds, red under 10
• Move counter and stage tracker for advanced presets

Sound & Feedback
• Toggle sound effects and haptic feedback
• 20-second warning alert before flag fall
• Custom audio cues for tap, pause, time out, and trainer

Chess Time Trainer
Improve your time management:
• Per-player reminder intervals (5s, 10s, 15s, 30s, 60s, or custom)
• A visual pulse on your clock when you should be deciding
• Separate intervals for Player 1 and Player 2

Game History & Statistics
Every game is automatically saved with:
• Total duration, moves, and pause time
• Per-player stats — total thinking time, average move time, fastest and longest think
• Move-by-move timeline of how long each player spent on every turn
• Clock-derived accuracy, computed from the clock itself
• Bulk delete or clear all history

Personalization
• 5 theme colors — Purple, Blue, Green, Orange, Rose
• Restore all default time controls with one tap

Offline & Lightweight
• No internet required to play
• All data stored locally on your device
• Send feedback directly from the app when you're online

Designed for Real Games
• Pause anytime — adjust either player's clock during a pause
• Auto-saves unfinished games so you never lose progress
• Keeps the screen awake during active games

ChessRank Chess Clock — built for the board, not the browser.