FocusClock

FocusClock keeps three simple things in one calm, dark place. The clock tab shows a real analog face with a sweeping second hand next to a large digital time and today's date. The focus tab runs a countdown you set to twenty-five, fifty or ninety minutes, drained across a segmented bar; start it, pause it, reset it, and every finished stretch quietly adds its minutes to your day. The stats tab totals the minutes and sessions you have logged and draws the last seven days as a small bar chart, so a good week is easy to see. Everything is kept on your device, nothing needs an account, and the whole thing stays out of your way while you work.