The story
Thousands of sessions, and one setting he never changed.
The founder edits video and produces music videos. That work takes twenty minutes to get into and every interruption costs him. He kept time in sessions of twenty five minutes, with a break between them and a longer break after every four, and he recorded every one. Over the years that record grew to several thousand sessions. The session length was a setting he could change the whole time, and he never did.
The timer that kept those records was a browser tab, and it had three problems. Refreshing the page cancelled the session. Leaving the page cancelled the session. And it did not work on a phone, because the phone put the tab to sleep and the countdown stopped with it. It also got slower every month, because every screen downloaded the entire history every time.
Untimer started as the fix for those problems. Along the way it became its own thing: one timer, one session length, a beginning you wind, and a record that tells you what happened. It was built for the founder first and tested on his own history.