The right moment,
measured.
A focus timer, planner and honest insights app for Android. It lives entirely on your phone. No account, no AI, no internet.
Everything you need to do deep work, and see it honestly.
Focus that measures itself
Sessions timed to the second from real timestamps, so they stay exact if the app closes or the phone restarts. Leave mid-session and the distraction is counted.
Plan it, then do it
Tasks with projects and estimates. Real focus time is logged against each one automatically. Notes stay linked to the session they came from.
A ten-second check-in
Mood, energy, sleep and habits once a day. It's what lets Kairo tell you how sleep changes tomorrow's focus.
Share the work, not your data
Story cards and transparent stickers for Instagram, Snapchat and WhatsApp. Task names stay hidden unless you choose.
Stats nobody else gives you.
Plain maths on your own data, computed on your phone. Every number explains how it was calculated, and stays hidden until there's enough data to be true.
- Focus half-lifeHow long you usually stay focused before the first distraction.
- Peak windowThe two hours you actually do your best work.
- Switch costExtra minutes lost every time you change project.
- Estimate driftHow far your time estimates run over, or under.
- Sleep × focusHow much more you focus after a good night.
- MomentumYour last week against your four-week pace.
It can't send your data anywhere.
It doesn't have internet.
Accounts, ads, trackers or AI. Kairo has no internet permission at all.
The database on your phone is encrypted, and so is every backup, with a password only you know.
Export everything to open formats, any time. Back up to Drive, OneDrive, Dropbox or an SD card.