Flag vs Chess Clock

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 Privacy: https://bountyapps.com/flag/privacy.html Terms: https://bountyapps.com/flag/terms.html

The chess clock built for real play. Whether you're grinding one-minute bullet online prep, running a tournament arbiter's floor, or teaching a kid how to press their first clock — Chess Clock has the time control you need, and gets out of your way while you use it. •••••••••••• EVERY TIME CONTROL THAT MATTERS • Bullet: 1 min, 2 min • Blitz: 3+0, 3+2, 5+0, 5+3 • Rapid: 10, 15+10, 25+10 • Classical: 30, 60, 90+30 • FIDE Classical: 40 moves in 90 minutes + 30 in 30 minutes + SD in 15 minutes + 30-second increment from move 1 — the World Championship spec, implemented exactly • Armageddon • Hourglass mode • Go and Shogi: byo-yomi periods with FIDE-correct consumption • Scrabble presets • 17 built-in presets across 7 categories •••••••••••• TOURNAMENT-ACCURATE Fischer increment, Bronstein delay, US/Simple delay, Japanese byo-yomi, Canadian overtime, hourglass, and multi-stage transitions — all FIDE-correct. Move-by-move state persists across every action, and you can undo the last press if you fat-fingered a tap. •••••••••••• BUILT FOR THE TABLE • Two big edge-to-edge tap zones — nothing to miss under match pressure • Flat-on-table mode rotates the opponent's clock so both players read face-up • Monospaced digits, tenths of a second in the last 20s • Six visual skins: Classic B&W, Wood, DGT green LCD, Tournament navy & gold, Neon, Midnight — pick one per match • Voice announcements at 60s / 30s / 20s / 10s / 5-4-3-2-1 • Live Activity keeps the clock on your Lock Screen and in the Dynamic Island •••••••••••• MOVE HISTORY & ANALYTICS Every press is logged with its duration. When the match ends, review: • The full move timeline with per-move deltas • Per-side stats: moves, total time, average, longest think • Cross-match analytics: your play streak, average move time, longest think ever, time-trouble rate, wins as White vs Black • Export as PGN with clock annotations for Lichess, SCID, ChessBase • Or export as CSV or JSON for your own analysis •••••••••••• BROADCAST & SPECTATE Tap share to generate a 6-digit code. Anyone with the code can watch your match live from iPhone, iPad, Mac, or the web at chessclock.app — clocks sync in real time. Two-code model: give the edit code to your opponent, the view code to spectators. •••••••••••• DESIGNED FOR SERIOUS PLAY • iPhone, iPad, macOS, visionOS • Landscape and portrait supported • Native SwiftUI — buttery, low-latency • No ads, no accounts, no distractions Chess Clock is a passion project by a chess player, for chess players. Feedback and feature requests are always welcome — tap Send Feedback in Settings.