GODOG is a pro-grade game clock and byo-yomi timer built for the game of Go. Use one phone or link two: a single phone starts a game instantly; two phones connect directly via QR code, each player facing their own clock — just like a real game table.

【Time Systems】
・Japanese byo-yomi: set main time, byo-yomi seconds and periods freely
・Fischer increment: adds time after every move — also great for chess
・Voice countdown reads out the seconds, so your ears know when time is short
・Automatic timeout judgment, calibrated to the millisecond on real devices

【One-Phone Mode】
One phone as the clock; Black and White each tap their own side.

【Two-Phone Mode】
Link two phones via Wi-Fi or personal hotspot (QR pairing). No server involved — no internet needed during play:
・Watch your own clock; your opponent's time stays in sync
・Disconnection detected automatically, with guided reconnect
・No sign-up, no account, no personal data collected

【Languages】
・English, 日本語, 한국어, 繁體中文, 简体中文
・Fully localized interface, tutorial, and voice countdown
・Automatically matches your system language on first launch

【Design】
・Dark theme, with optional full-screen immersive mode during play
・Pause / resume / resign / draw, and one-tap rematch after a game

【Pricing】
Free to download and use. One-phone byo-yomi is completely free. Two-phone mode and Fischer increment use points (earn them by watching ads — stock up in advance), or upgrade to Pro with a one-time purchase: all ads removed, every feature unlocked forever, free restore on a new device.

Feedback is always welcome via the in-app Help Center.