A time blocking app for people who hate rigid calendars

Kairo is a time blocking app for people who found calendar-grid blocking too brittle. You give each task a planned time and a duration estimate, run it with a built-in focus timer, and let the day flex when reality arrives. Blocks live on your task list and monthly calendar rather than as wall-to-wall calendar events, so one overrun does not knock over the whole day.

Time blocking works, the research on implementation intentions is clear that deciding when and where you will do something makes it far more likely to happen. What fails is the brittle version: a calendar packed edge to edge at 8am that is fiction by 11. One meeting overruns and the rest of the day is a wall of lies you now have to re-plan.

• Blocks in Kairo are intentions, not appointments. A task planned for 2pm with a 90 minute estimate is a commitment to start, not a contract with the grid.
• Overruns do not cascade. If the 2pm thing takes until 4, nothing else turns red. The next task is simply still there, and tomorrow's Fresh Start sweep helps if the day defeats you.
• The focus timer closes the loop. Start a task and a timer runs against its estimate, which is how your guesses get better week over week.

If your day is meetings-first and you want tasks physically drawn on the same Google Calendar your team sees, a calendar-native tool fits better: Akiflow and Sunsama both do drag-to-calendar time boxing, and Motion auto-places blocks for you. We compare them honestly in Kairo vs Akiflow and Kairo vs Sunsama. Kairo's calendar sync is on the roadmap but not shipped, so today Kairo is the right pick when you want time blocking that bends instead of breaks, at about a tenth of the price.