Pattern library

Screen-time patterns: what totals leave out

A plain-language guide to danger windows, sticky sessions, reopenings, notification hooks, and app-switching loops.

By Klokd editorial team · Published and reviewed 10 October 2026

Five useful patterns

A pattern is a repeatable shape in usage, not a diagnosis or a moral label.

  • Danger window: use repeatedly rises during a particular time period
  • Sticky session: a visit continues much longer than intended
  • Reopening: the same app returns soon after it was closed
  • Notification hook: use repeatedly follows a notification
  • Switching loop: attention cycles through a familiar sequence of apps

Why the distinction matters

Two people can have the same daily total and need different tools. A timer may fit a sticky session, while a schedule may fit a danger window and notification controls may fit a notification hook.

Patterns are prompts, not verdicts

Usage data has context software cannot fully know. Klokd shows the evidence behind a detected pattern and asks the user to decide whether it is meaningful before creating a rule.