If this sounds like your week
Most “simple timers” are not simple for your machine.
“Neurodivergent-visible countdown low-latency overlay discipline” often leads to Electron by default, which is a lot of process overhead for a countdown. TimeFence is local-first, zero telemetry, and built in Rust with Tauri so the HUD does not feel like a second browser living in your task manager. The overlay path is about performance, not about collecting usage graphs.
Where tooling usually breaks
RAM is not infinite. Neither is your patience for bloatware.
The honest reason people search “Neurodivergent-visible countdown low-latency overlay discipline” is that most “apps” are distribution stacks pretending to be tools. A Windows overlay timer should be small, local, and auditable. That is the bar TimeFence is built for: Rust + Tauri, not a second Chromium install with a “productivity” skin.
What you are not installing
# A timer should not be a second browser with analytics SDKs
Telemetry: off
Account required: no (it's a local Windows app)
Runtime: Tauri (native shell) + Rust
Job: a visible HUD, not a growth funnel