A time-box only works
when you can see the box.
reducing context switching with visual timers

The Pomodoro technique and deep-work blocks both rely on a clear edge: a defined interval of focus followed by a defined break. The break isn't a reward bolted on at the end — it's the mechanism that keeps attention sustainable. So the boundary between work and break is the part that actually has to work. An end-of-interval alarm is a single event, and single events fail in two directions. If you're deep in the task, one chime is easy to dismiss and ignore, so the block sprawls past its edge. If you're anxious about the time, you compensate by repeatedly checking a hidden tray or tab — and every check is an interruption, which is the opposite of what a focus interval is for. A continuous, visible countdown fixes both. Because the remaining time is always in view, you never need to poll it, so concentration stays intact; and because the boundary approaches visibly rather than arriving as a surprise, you wind down naturally instead of overshooting. The cue does its job without ever demanding a deliberate look. TimeFence renders that countdown as an always-on-top HUD over your real work, so a 25/5 cycle or a longer deep-work block stays legible the whole way through. When you tend to bail before the boundary, optional Strict Mode holds it for you. Native Rust and Tauri, local-first, no telemetry.