I recently updated a few things at timer.ac. It is a timer application that I worked on. It allows designing timers that come one after another. I recently added some code to show information about the next timer when the current timer ends.
Another update is about the sound warnings. It is possible to mute/unmute the sound warnings for ending timers. The default is the muted state and there is an unmute button. I recently added some information on the main page about how to start a timer with unmuted state.