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Kairos

Your tasks in the right order, fitted into your day. No account, no network.
New in version 3.9.0
Kairos 3.9.0: rename priorities and point levels (Settings → Planning); best hours also measured by efficiency (where you finish faster than estimated); first recurring task and Settings walked through step by step; Team: working days and hours per member, notes attached to exchanges, a member can propose a task to the manager; desktop: choose the data folder, optional diagnostic log, system proxy.
Kairos puts your tasks in the order to do them and fits them into the gaps of your day, at the right time.

An order you can explain
Each task gets a priority score (WSJF): its value (priority P0, P1 or P2, plus the urgency of its deadline) divided by its effort in points. Small and important goes before big and distant; an overdue task always comes first. “Why this position?” shows the calculation in one tap.

A realistic day

  • Tasks are placed around your meetings, with a buffer after each one.

  • Deep-work slots are protected; in the afternoon, complex tasks give way to lighter ones.

  • Fixed times, recurring tasks (daily, weekdays, weekly, “on the 23rd of the month”), dependencies between tasks, editable subtasks, French public holidays.



Capture without friction (GTD)
An idea? A note. A task? A title is enough: it waits in “To process” until you give it a priority and a size, one tap each.

Real time
A timer per task, with an ongoing notification; alerts when you go past the estimate, forget a running timer or need a break, even with the app closed. Statistics compare your estimates with the time actually spent.

Manage a team (optional)
Off by default, team management adds a second space for the manager, who remains the only user:

  • Members and absences, a shared backlog, progress tracking with its log.

  • Each person’s load against their capacity, and a suggested split of the tasks; your own personal tasks can count in your load.

  • Monte Carlo forecasts: finish dates as percentage chances, threatened deadlines, “What if…?” scenarios.

  • File exchanges with members who use Kairos: they receive their tasks and send back their progress.

  • Everything stays on the device; the personal space never shows anything from the team.



Your data stays with you

  • No account, no ads, no trackers, no network permission.

  • Export and import a JSON file, to back up or switch devices.



Kairos is also available for Windows, Linux and macOS, and in the browser. Free software under the MIT licence, in French and English (your choice in the settings; English by default if your system is not in French).
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Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

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  • Version 3.9.0 (30900) suggested Added on Oct 27, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • com.skohscripts.kairos.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.8 MiB PGP Signature | Build Log

  • Version 3.6.0 (30600) - Added on Oct 25, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • com.skohscripts.kairos.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.7 MiB PGP Signature | Build Log

    • New in version 3.4.0
    Kairos 3.4.0: hours by day of the week (own hours or a day off); learned durations for tasks without an estimate; a guided first task, “Discover Kairos” chapters and a “New in this version” section on Home; date picker and shortcuts, “Move…” a task, a message when you block a task, plainer settings with “Restore default settings”; the old-version import is removed; many fixes.
  • Version 3.4.0 (30400) - Added on Oct 18, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • com.skohscripts.kairos.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 2.7 MiB PGP Signature | Build Log

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