Kailos

Scheduling, intuitively.

It shouldn't be this hard.Your task manager should blend into your daily life without a single hiccup. That's what Kailos is for.

Join the beta

Version 1.5.2 · 30 October 2026

Time-weighted

Every task has a time.

Minutes, not checkboxes. The rings show what you actually finished.

The Kailos board: one column per list, with today's activity rings and summary above.

Focus

One list. All the clarity.

One list, its own rings, and a window of its own if you want it.

A single list with its summary rings and tasks.

Insights

See the shape of your week.

This week, your streak, and what's due next.

The Insights page with focus time, a weekly chart and a streak grid.

Themes

Make it yours.

Twelve themes. Your pick follows you to every device.

The board in the Moonlight theme. The board in the Deep Blue theme. The board in the Solara theme. The board in the Dark Green theme.

Sign in

One click. Every device.

Continue with Google or Apple, then the same lists everywhere.

The Kailos sign-in page with a Continue with Google button.
Offline firstSaved on your device first, synced after.
Mac, PC, Android/iOSOne sign-in with Google or Apple, the same lists on every device.
Live updatesChanges appear on your other devices in seconds.
Your data, your folderUpdates never touch your tasks.

Built around time, not just checkboxes

Every task has an effort in minutes. That one idea turns a to-do list into a picture of your day.

Activity rings

Three rings show the work you finished today, this week and all time, plus time left, due today, overdue and your streak.

Insights

This week against last week, a 14-day activity grid, per-list progress and upcoming deadlines.

Lists and board

Colored lists as columns on one board. Drag tasks between them, or pop a list out into its own window.

Quick to use

Add tasks inline with a due date, effort and list. Undo anything. Overdue? Push it a week; it counts as a strike.

Gentle reminders

A day, six hours and an hour before something is due. On Android, even when Kailos is closed.

Backups you control

Export a full backup or a Markdown list, and import it anywhere.

Why Kailos

Why Kailos beats Google Tasks

Google Tasks keeps a list. Kailos knows how long every task takes, so it shows you where your time goes, plans the big things for you, and keeps your data out of anyone's ad business.

FeatureKailosGoogle Tasks
Every task has a length, from minutes to hoursSo "write the essay" and "email Sam" don't count the same.YesNo
Activity ringsThe time you finished today, this week and all time.YesNo
Day streaks and strikesPushing an overdue task back a week counts against you.YesNo
Insights and a weekly WrapThis week against last, a 14-day grid, what's due next.YesNo
Projects that plan themselvesA big task split into daily sessions around your days off.YesNo
Reminders ahead of timeA day, six hours and an hour before it's due.YesAt the due time
Twelve themesYour pick follows you to every device.YesLight and dark
A real desktop appWorks offline, lists in their own windows.Mac (Windows soon)Inside Gmail and Calendar
No ad company behind itYour tasks are never used for advertising or tied to anything else you use.YesPart of Google
Syncs your phone and computerYesYes

Android/iOS

Your day, in your pocket.

The same tasks, rings and projects, on the same core as the desktop app. Pull down to add, swipe to move around.

Progress on Android: streak, strikes, this week's minutes, daily bars and a five-week activity map.
Progress at a glance
Kailos on Android: the activity rings with a seven-day streak in the middle, hours left today and the tasks coming up.
Home: rings, streak, what's next
Projects on Android: a research paper split into five daily sessions, one done, with the next session ready to check off.
Projects, session by session
Home on Android in the Sakura theme, pink and plum.
Twelve themes, on both apps
The add-task sheet on Android: a title, then list, date and time pills, and Add task.
  • Pull down to add. Name it, tap a list, date or time.
  • Reminders arrive even with the app closed.
  • Separate accounts for school and work, mergeable any time.
  • Easy updates. One tap on Android, the App Store on iPhone.
Join the beta Android and iPhone

Beta testers get new builds first, and a direct line to tell us what to fix.

The Plan project dialog: total effort, due date, working days and the resulting daily sessions.

Projects

Big things plan themselves.

Turn a large task into daily sessions. Pick a due date, block days off, and Kailos spreads the work across the rest.

  • Working days. Block whole weekdays or single dates.
  • Finish on the due date or start today, with sessions previewed first.
  • Sessions are real tasks. They count toward your rings and reschedule like any other.

Account & sync

Sign in with Google or Apple. Pick up anywhere.

Sign in once and your Mac, PC, Android phone and iPhone stay in step, even offline.

  • One-click sign-in with Google or Apple. No new password. Only a sign-in token is kept, in your system's secure storage.
  • Live. Edits show up on other devices in seconds, and catch up after a dropped connection.
  • Everything that matters. Lists, tasks, strikes and your theme follow you. Window positions stay per device.
  • Safe by design. The newest edit wins, and signing out never removes anything from your device.
  • Private. The server lets you read and write only your own data.
The Kailos board on the desktop, one column per list.
All tasks on Android, showing the same lists and tasks.

Privacy

Your data stays yours

Your tasks live on your device. If you sign in, a copy syncs through Supabase so your devices stay in step. Kailos uses your Google email only to recognize your account, never for ads, and you can have the hosted copy deleted at any time.

Read the full privacy policy

What's new

The latest versions

The newest Desktop and Android/iOS releases. Every earlier version is in the changelog.

Loading release notes…

See the full changelog

Questions

How do I join the beta?

Sign up on the beta program page. Testers get early builds and a direct line to tell us what to fix.

Why Kailos over Google Tasks?

Google Tasks keeps a list. Kailos gives every task a length in minutes, so it can show the time you actually finished (rings, streaks, insights, a weekly Wrap), split big projects into daily sessions and remind you before things are due. Your data is never used for advertising. See the full comparison.

Do I need an account?

Yes, a Google or Apple sign-in the first time you open it. After that it opens straight into your lists and works offline, syncing when you're back online.

What does Kailos see in my Google or Apple account?

Only your email, to tie your data to you (Apple may give us a private relay address instead). It never reads your mail, contacts or files.

What if two devices change the same task?

The newest edit wins, on every device.

What happens to my tasks from before accounts?

Nothing is lost. Your library links to your account the first time you sign in.

How do updates work?

Kailos checks when it opens and from the menu. Your data is stored separately, so updates never touch your tasks.

Why is it called Kailos?

It blends kairos (καιρός), the right or opportune moment, with telos (τέλος), the end something is working toward. The app is about doing the right thing at the right time, with every task aimed at a goal. It was called Tasker before.

Is there a phone version?

Yes, for Android and iPhone. Both are in beta, and you can join the beta to try them.