Private by default. Encrypted when synced.

The core planner is designed to work on your device without forcing cloud sync before you can use it. You can plan locally first; cloud sync is optional, not the foundation of the product.

Because your data lives on your device by default, the app stays fast and keeps working offline — on a plane, on a weak connection, or whenever you simply prefer to stay local.

WeekFlux does not embed analytics to track how you plan. There are no behavioral tracking pixels watching what you do inside the planner.

Your tasks, notes, habits, schedules, and planning behavior should not become a behavioral analytics feed. WeekFlux treats the contents of your planner as private by default.

That means the sensitive details of your week — who you meet, what you work on, your routines — are not mined to profile you or improve an ad model.

For users who want cross-device access, encrypted sync can be enabled intentionally. It is built on a zero-knowledge model: your data is encrypted on your device before it is sent, and the server only ever stores ciphertext it cannot read. WeekFlux even rejects any attempt to upload unencrypted planner data as a safeguard.

WeekFlux uses well-established, standard cryptography built directly on the browser's native Web Crypto API — no custom or homegrown algorithms. Here is exactly what happens under the hood.

A single random data key encrypts your planner. That data key is then separately wrapped by your password, by a recovery key, and optionally by a passkey — so you can change your password without ever re-encrypting your data, and no wrapping secret is ever sent to the server.

Because encryption is zero-knowledge, WeekFlux cannot reset your password for you. When you set up your vault you receive a one-time recovery key — keep it somewhere safe, because it is the only way back in if you forget your password. If you lose both, the data cannot be recovered by anyone, including us.

On supported devices you can unlock with a passkey or biometrics (fingerprint or face) instead of typing your password each time. These use the WebAuthn PRF extension to unlock locally on your device; the biometric or passkey secret never leaves it. A configurable auto-lock clears the key from memory after a period of inactivity.

WeekFlux is built around a simple principle: your planning data should serve you, not become a tracking dataset. Privacy here is the default state, not a paid add-on or a setting buried in a menu.

You decide where your data lives. Stay fully local, or turn on encrypted sync when you are ready — and turn it back off without losing anything.