Tasks that can grow
Create nested tasks when a task needs more detail. Add another level whenever the work needs to be broken down further.
A fluid task app for personal productivity
Start with a task. If it grows, add the tasks that belong to it. If those grow, keep going.
Start simple, then add the tasks that belong when something needs more room.
Built around the task in front of you
Use duun to create tasks, add notes, share focused work, and plan from the tasks themselves when the tree gets deep.
Share focused work
Invite a friend or family member into a specific task and they can follow the related work with you. Changes appear in real time.
Use it across devices
Keep your tasks with you from your computer to your phone, so quick captures and deeper planning can happen where they fit.
Keep context with the task
Write notes in Markdown or rich text, keeping decisions and rough thinking attached to the work without turning every note into a date.
Works with AI clients
Connect Codex, Claude Code, or another MCP client with scoped access to your tasks.
Plan with your tasks
Keep unscheduled tasks in view, commit time for what matters, and optionally sync scheduled tasks with Google Calendar. When availability is enabled, duun checks your connected calendar before scheduling time.
Private by default
duun is built for personal work, so privacy matters. The content you write is encrypted before it is stored, which means your task details are not kept in plain, readable text.
Pricing
Every product feature is included in both plans. Use duun for free on a couple of active devices, and upgrade when you want it everywhere.
Free
For keeping personal tasks clear across your everyday devices.
$0
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Pro
For using duun across your devices and collaborators.
$3/month
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