Sumkan – Focus Timer

Sumkan

In-app purchases

About this app

Sumkan is a calm Pomodoro focus timer that helps you build a steady rhythm of deep work and mindful breaks — on your phone, tablet, and Android Watch.

Start light, focus deep. Tap once and a quiet 25-minute focus session begins, followed naturally by a short break. No noisy dashboards, no pressure — just a timer you can trust.

WHY SUMKAN
• Calm by design — a focus surface that breathes slowly around the timer and never competes for your attention.
• Offline-first — your timer, settings, focus records, and tasks stay on your device. Close the app or restart your phone, and the active session is restored.
• Private — works with no account and no sign-in. Nothing is sent to a server.

FOCUS THAT FITS YOUR DAY
• One-tap start, pause, skip, and reset.
• Adjustable focus length, short break, long break, and long-break interval.
• A daily goal you can see at a glance.

CONNECT TASKS TO FOCUS
• Plan tasks by date and link today's task to the timer.
• See exactly what you focused on, session by session.

SEE YOUR RHYTHM
• Calm daily, weekly, and monthly focus stats.
• Heatmaps, trends, and tag/task analysis help you learn when you focus best.

ON YOUR WRIST
• A Wear OS / Android Watch companion mirrors the phone timer.
• Start, pause, skip, and reset right from your wrist.

MAKE IT YOURS
• Tide backgrounds, color themes, motion levels, sounds, and fonts.

SUMKAN PRO (one-time purchase)
Pay once through Google Play — no subscription. Pro unlocks unlimited tasks, detailed stats, watch support, full customization, and backup/restore. Your purchase can be restored on a new device.

Sumkan is available in 12 languages. Start with one quiet block today.

What’s new

Welcome to the first release of Sumkan.

• Calm timers for focus, short breaks, and long breaks
• Offline-first timer restoration
• Todos and statistics for understanding your focus rhythm
• Wear OS companion support for Sumkan Pro users