app
5-Minute Timer
Public UnreviewedA countdown timer that goes green to red, then flashes red and counts negative when time's up.
5-Minute Timer
A countdown timer that starts green, sweeps to red as it runs down, and once it passes zero keeps counting negative while the whole screen flashes red at 1 Hz. Play/pause, reset, and on-the-fly time adjustments. One self-contained HTML file — no build, no server.

Live Demo
Press Start, let it run past zero, and watch it flash. Everything is baked in — the demo above is the real app.
Install
adompkg install timer
Quick Start
timer # serve it locally → http://localhost:8741/
TIMER_PORT=9000 timer # pick a different port
Or just open ~/.local/share/adom-timer/index.html in any browser — it needs no server.
Screenshots
Ready — full green at 5:00

Time up — flashing red, counting negative

Features
- 5-minute countdown with a depleting progress ring and large tabular digits.
- Color sweeps green → yellow → red as the remaining time shrinks.
- Past zero it counts negative (
-0:01,-0:02, …) and the whole background strobes red at 1 Hz while running. - Pause stops the strobe (digits stay red) for a calm, readable "time's up" state.
- Play / Pause and Reset buttons (Space and R keyboard shortcuts).
- −60s / −30s / −10s / +10s / +30s / +60s adjust buttons that work whether running or paused — add time to climb back into the green.
- Wall-clock-accurate timing (
performance.now()), so it stays correct even when the tab is backgrounded. - Fully self-contained: a single static HTML file, zero dependencies.
Dependencies
This app has zero adompkg dependencies. It is one self-contained HTML file with no external libraries, fonts, or services.
Talk to the AI
- Open / run: "open the timer", "start a 5 minute timer", "serve the countdown timer"
- Use: "reset the timer", "add 30 seconds", "pause it"
Skills
| Skill | Purpose |
|---|---|
timer |
Describes the app, how to run it (timer launcher or open the HTML directly), the controls, and the green→red→flash behavior. |
# 5-Minute Timer
A countdown timer that starts green, sweeps to red as it runs down, and once it passes zero keeps counting negative while the whole screen flashes red at 1 Hz. Play/pause, reset, and on-the-fly time adjustments. One self-contained HTML file — no build, no server.

## Live Demo
<iframe src="/blob/app/timer/demo/index.html" width="100%" height="560" frameborder="0" style="border-radius: 10px; border: 1px solid #30363d;"></iframe>
Press **Start**, let it run past zero, and watch it flash. Everything is baked in — the demo above is the real app.
## Install
```
adompkg install timer
```
## Quick Start
```bash
timer # serve it locally → http://localhost:8741/
TIMER_PORT=9000 timer # pick a different port
```
Or just open `~/.local/share/adom-timer/index.html` in any browser — it needs no server.
## Screenshots
### Ready — full green at 5:00

### Time up — flashing red, counting negative

## Features
- 5-minute countdown with a depleting progress ring and large tabular digits.
- Color sweeps green → yellow → red as the remaining time shrinks.
- Past zero it counts negative (`-0:01`, `-0:02`, …) and the whole background strobes red at **1 Hz** while running.
- Pause stops the strobe (digits stay red) for a calm, readable "time's up" state.
- **Play / Pause** and **Reset** buttons (Space and R keyboard shortcuts).
- **−60s / −30s / −10s / +10s / +30s / +60s** adjust buttons that work whether running or paused — add time to climb back into the green.
- Wall-clock-accurate timing (`performance.now()`), so it stays correct even when the tab is backgrounded.
- Fully self-contained: a single static HTML file, zero dependencies.
## Dependencies
This app has **zero** adompkg dependencies. It is one self-contained HTML file with no external libraries, fonts, or services.
## Talk to the AI
- **Open / run:** "open the timer", "start a 5 minute timer", "serve the countdown timer"
- **Use:** "reset the timer", "add 30 seconds", "pause it"
## Skills
| Skill | Purpose |
|---|---|
| `timer` | Describes the app, how to run it (`timer` launcher or open the HTML directly), the controls, and the green→red→flash behavior. |