This week, I've spent some time to update the app to significantly improve the useability. Beyond a strong visual refresh, key improvements are:
- full offline mode support: no more need of an Internet connection after the first usage. This is achieved using a AppCache manifest file.
- new pause/resume control button.
How to use the timer
This timer simply works in a (recent) browser: http://éole.net/timer/. On a desktop/laptop computer, using the fullscreen mode gives the best result.
The app is available under a CC-BY-SA license. Source code is on GitHub: https://github.com/pierre-haessig/visual-timer
Possible future updates
I may take the time to add the necessary manifest file to turn this web app into an actual hosted Firefox OS app.