Flag: Chess Clock & Timer

Phone flat between you. Top half flips so your opponent reads it right-side up. Tap to switch. The chess clock that finally feels like sitting across the board.

A real chess clock, built for real chess players.

Most apps stop at Fischer, swap your color every turn, and put Bronstein behind a paywall. Flag does all of it, without a subscription.

FIVE INCREMENT MODES

• Fischer — increment added after every move. OTB and online standard.
• Delay (USCF) — clock pauses for a fixed delay before counting down.
• Bronstein — used time returned at end of move, capped at the increment.
• Hourglass — time flows from one side to the other.
• Byo-yomi — Japanese overtime periods after main time runs out.

DISPLAY & TAP

• Split or Color display modes.
• Tap your own half (chess tradition) or tap anywhere — your choice.
• Persistent White/Black sides — they don't swap based on turn.

ALSO IN FLAG

• Full game history with per-move timing • Stats dashboard — averages, move-time charts, time-trouble heatmap
• Pause, resign, agree-draw shortcuts
• Customizable haptics and sounds
• Custom time-control presets — bullet, blitz, rapid, classical, byo-yomi

PRO — ONE-TIME UNLOCK. NO SUBSCRIPTION.

7-day trial of every Pro feature. After that, a one-time unlock keeps everything forever. No subscription. No ads. Pay
once, own it.

Pro adds Bronstein, Hourglass, and Byo-yomi modes; 12+ premium clock themes (Wood, Tournament felt, Brass DGT, Carrara
Marble, Library, Fischer 72, Havana, Zen, Frost, Streamer, Neon and more); unlimited custom presets; and premium switch sounds.

PRIVACY

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