The most flexible I’ve used out of about a dozen

You can set the time by the minute (not an incrementally numbered dropdown menu like others) and you can change the time while it is in session. This update has short and long breaks (the current photos don’t show this feature). Also, you can choose whether or not to automatically continue, as well as whether or not to be interupted by being shown the app when time is up.

One minor issue I found with the latest update is a strange “selection” that happens on the start/stop button (it looks almost as if the icon is text that has been selected), but it hasn’t caused any problems other that looking strange. The small CPU usage from this app is ideal. I can leave the timer running all day without any trouble, which is a relief compared to a majority of the dozen or so timers I’ve used in the past, both free and paid.

A note to the developer: took me a long time to find this app because it doesn’t show up in search results for "interval timer”, like the other pomodoro timers do; however, that term does only have about half the search volume as “pomodoro timer". Before I could find the app I had to learn what “pomodoro” was, because of seeing other apps with the name, and then I had to directly search for competitors to the apps I saw available. It does show up when seaching for “timer” but the light coloring (which i enjoy… I personally love the design) seems to have made it easy for my eyes to skip over when scanning the search results, but that may just have been my experience.

austinh about Tomato One - Free Focus Timer