Go Clock Pro
Byo-yomi clock. Built for go.
Only for iPhone
$1.99 · Designed for iPhone. Not verified for macOS.
iPhone
1.0 launch: a go-only clock with byo-yomi, Canadian, Fischer, and Absolute. Multilingual countdown, no ads, no tracking, no subscription. One-time $1.99.
Go Clock Pro is a focused game clock for over-the-board go. Place the device beside the board, pick a preset, and start a 9x9, 13x13, or 19x19 game in seconds. No setup maze, no ads, no tracking.
WHY GO CLOCK PRO
- All four go time systems: Japanese byo-yomi, Canadian byo-yomi, Fischer increment, and Absolute.
- Asymmetric time controls for handicap and teaching games. Black and white can use different settings.
- Multilingual countdown in Chinese, English, Japanese, and Korean, with beep and haptic fallbacks.
- Two-sided table layout. Each player reads their own clock from their side of the board.
- Mistake-proof controls. Reset and resign require a deliberate long press.
- Tournament Lock keeps appearance and voice settings stable during a match.
- Offline by design. No accounts, no ads, no tracking, and no network requests.
WHAT YOU GET
- Built-in presets covering common East Asian byo-yomi, Korea 40s, Western Canadian, and Europe Fischer formats
- Custom games with full asymmetric time control
- Resume the last game after the app is closed
- Four visual themes: Kaya, Slate, Washi, and Tournament
- VoiceOver, Larger Text, Reduce Motion, high contrast, and color-independent cues
- Built for iPhone. iOS 16 and later.
PRICING
Go Clock Pro is a one-time $1.99 purchase. No subscription. No in-app purchases. No ads.
FOREGROUND USE
Go Clock Pro is designed for foreground table use. iOS limits background timers and audio to specific app categories, and game clocks are not one of them. When the app enters background or the screen locks, the game pauses and saves a snapshot. Resume requires you to come back and tap. This is a deliberate trade-off for accuracy: a snapshot you trust beats a background timer you cannot.
For best results, place the device flat on the table beside the board, keep the screen on, and keep the app in the foreground.
SUPPORT
98stoned.thrifty@icloud.com
PRIVACY POLICY
https://kaiqin04.github.io/goclockpro/privacy/
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Wei Zhi Qin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Wei Zhi Qin
- Size
- 3.7 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 4 more
- English, Japanese, Korean, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Wei Zhi Qin
