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Tasks with priority and due dates
Title, description, priority (none / low / medium / high / urgent), optional due date. Filter by All / Active / Completed. The list syncs across your devices.
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Application · uTodo
Tasks.
Encrypted by default.
Encrypted to-do list
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Capabilities
What you can do with Tasks.
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Encrypted personal storage
All tasks live in the encrypted Personal Storage layer — never on the server in clear text. The server only ever sees ciphertext blobs.
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Convert any message into a task
From uChat, tap “create task from message” and the message becomes a task with full context preserved. No copy-paste, no context loss.
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Protection
Security for Tasks.
Content in Tasks is inside the end-to-end encrypted envelope: it is encrypted in your browser before it is transmitted, and the server stores ciphertext it holds no key for.
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Post-quantum cryptography by default
All authentication and key exchange uses NIST-standardized ML-DSA-65 (FIPS 204) signatures and ML-KEM-768 (FIPS 203) key encapsulation. There is zero RSA, zero elliptic-curve, zero classical-only crypto in the authentication path. Defeats store-now-decrypt-later attacks.
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End-to-end encryption on your device
Every payload is encrypted in your browser using XChaCha20-Poly1305 (RFC 8439) with a 192-bit nonce and a Poly1305 authentication tag. The plaintext exists only in your tab's memory. When you close the tab, the plaintext is gone.
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The server holds ciphertext it cannot open
For Tasks content the server only ever stores ciphertext and public keys. It cannot decrypt your data — by architecture, not by promise: there is no backdoor, no master key and no key escrow, because no key that would open it ever reaches the server.
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Your keys stay on your device
Your private keys are derived in your browser from three secrets only you control, and are held in memory for the session only — never written to browser storage, never sent to the server. A new device derives the same keys locally from the same three secrets.
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Mechanics
How Tasks works.
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Open Tasks in your browser
UltimaOS runs in any modern browser — Chrome, Firefox, Safari, Edge. Nothing to install. Sign in by re-entering the three secrets your keys are derived from, and the same keys are rebuilt locally on whatever device you are using.
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Your data is encrypted before it leaves your device
Sending a message, uploading a file, writing a note — the content is encrypted with XChaCha20-Poly1305 and authenticated with an ML-DSA-65 signature before any byte crosses the network boundary.
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The server stores ciphertext and returns it on demand
The server keeps an opaque blob it has no key for. When you open Tasks, those blobs are streamed to your device, decrypted locally and rendered. Plaintext exists only in your tab.
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Changes follow you across devices
Any change you make is uploaded and picked up by every other device you are signed in on, so Tasks looks the same wherever you open it.
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Inside the suite
How Tasks fits in the suite.
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Boards
Each task can attach to a Boards card. Cards inherit task completion states.
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Calendar
Tasks with due dates appear in Calendar. Completing a task closes its calendar entry.
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Notes
Tasks can be created from Notes highlights. The note fragment is kept as task context.
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Account
Tasks are encrypted in your Personal Storage layer. Recovery via Account covers Tasks too.
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Get started
Get started with Tasks.
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Open Tasks in your browser
UltimaOS runs in Chrome, Firefox, Safari and Edge. Nothing to install. Sign in with your passphrase to derive your private key locally.
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Open the workspace and launch Tasks
The launcher shows every app. Tasks is right there with its capsule video preview. Click to open.
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Connect it with the rest of the suite
Tasks works alone, but it shines when combined with the rest of the UltimaOS apps. Same identity, same workspace, one place to work.
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Frequently asked
Questions about Tasks.
Is Tasks end-to-end encrypted?
Short answer
Yes. All content in Tasks is encrypted in your browser using XChaCha20-Poly1305 with a fresh key per item. The UltimaOS server only ever stores ciphertext and public keys — it cannot decrypt your data, no matter who asks.
What cryptography does Tasks use?
Short answer
Tasks uses the same post-quantum stack as every other UltimaOS app: ML-DSA-65 (FIPS 204) for authentication, ML-KEM-768 (FIPS 203) for key encapsulation, XChaCha20-Poly1305 (RFC 8439) for symmetric encryption, and HKDF-SHA256 for key derivation.
Can I use Tasks on multiple devices?
Short answer
Yes. Sign in on any device by re-entering your three secrets and the same keys are derived locally, so your Tasks content follows you. Changes sync live across all signed-in devices.
Is Tasks GDPR-compliant?
Short answer
Yes. UltimaOS is built and operated in the European Union by an EU company. The architecture is GDPR-compliant by design — encrypted data, EU-only infrastructure, no US CLOUD Act exposure, no advertising, no third-party trackers. See the GDPR page for the full breakdown.
How much does Tasks cost?
Short answer
UltimaOS is free for individuals and families — permanently, not as a trial. Organizations pay per seat once early access ends, and that is what funds the free accounts. There is no per-app add-on.
Can I export my Tasks data?
Short answer
Yes. UltimaOS supports encrypted export of all your content for backup and portability. The export is encrypted to a key you control; you can store it on your own infrastructure or in a personal encrypted backup.
Can I share a task list with my team?
Short answer
Yes. Tasks can be personal, shared with specific contacts, or attached to a Boards project. Sharing reuses the same encrypted storage layer as the rest of your content.