Sustain: Focus & Study Timer

Train your focus like an athlete — a calm focus timer

Android Productivity Time Tracking출시일 2026년 7월 16일

Sustain: Focus & Study Timer이란?

A calm focus timer built on one idea: focus is trainable, like a muscle. Do deep Flow sessions, take real phone-free breaks, and watch your stamina grow. A beautiful falling hourglass, three modes, no ads, no tracking — nothing collected, ever.

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