In behavioral psychology, a "variable ratio schedule" is one where a reward is given after an unpredictable number of responses. This is the most powerful type of reinforcement—it’s why people are so addicted to slot machines and social media feeds.

This unpredictability mimics the "game loop," making it easier to slip into a flow state where you lose track of everything but the task.

Our Liquid Countdown Timer allows you to easily set "custom" durations, letting you experiment with variable lengths for your focus sessions. The beautiful, fluid display makes the experience of watching the timer feel like a part of a larger, engaging game.

Experiment with your focus on our free visual timer