Tempo · Atomic Watch Sync

Your phone knows the time. Tempo knows the exact time.

Tempo is an atomic-clock app with style.

Powered by NTP (Network Time Protocol), Tempo continuously synchronises with internet time servers — keeping your displayed time accurate to within ~10 ms of true UTC. The result is a clock that looks stunning and tells the exact time, every time.

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⏱ PRECISION TIME
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• Syncs automatically with your choice of NTP server: Cloudflare, Google, Apple, Microsoft, Facebook, NIST, NTP Pool, or any custom host
• Configurable sync interval, from every 10 seconds to every 15 minutes
• Real-time NTP offset, round-trip delay, stratum, and precision displayed on screen
• Digital time readout with millisecond precision (toggle between 3-digit and 1-digit display)

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🎨 BAUHAUS DIAL, YOUR WAY
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• Analog clock face inspired by Bauhaus design principles: clean, geometric, timeless
• 16 dial colours: from classic Cream to bold Coral, Slate, Viridian, and more
• 14 lume colours: phosphorescent glow activates automatically in dark mode
• Optional complications: hour numerals, seconds bezel, small-seconds sub-dial, date window
• Three movement modes: mechanical 28 800 bph (8 beats/sec), quartz 1 Hz step, or continuous millisecond sweep

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🔤 TYPOGRAPHY
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• 11 clock-face fonts to match your taste
• Modern & Clean: Inter, Roboto Mono, Montserrat
• Soft & Rounded: Nunito, Varela Round, Lexend
• Retro & Sport: Share Tech Mono, Orbitron, Space Mono
• Classic & Elegant: Playfair Display, Cinzel

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⌚ WATCHMAKER'S SYNC TOOL
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• Set your mechanical watch to the second - amber "get ready" signal 5 s before target, green "push crown" exactly on cue
• Configurable target second (0-59) to match your watch's hacking position
• The most precise free watch-setting tool on Android

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🌗 ADAPTIVE THEMES
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• System, Light, and Dark theme - automatically follows your device preference
• In Dark mode, lume colours glow with a realistic multi-layer halo effect
• Fullscreen mode: tap the clock to hide all controls for a pure, distraction-free display

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⚙️ SETTINGS
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• Choose your preferred NTP server or enter a custom hostname
• Adjust the sync interval to balance accuracy vs battery life
• Personalise the dial colour, lume colour, movement type, and font independently

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🔒 PRIVACY FIRST
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• Zero data collection: Tempo never gathers, stores, or transmits personal data
• No analytics, no ads, no account required
• The only network traffic is the outbound NTP sync packet

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📱 CLEAN & LIGHTWEIGHT
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• Minimal permissions: INTERNET only (required for NTP sync)
• No background services, no push notifications
• Works beautifully on phones and tablets in both portrait and landscape