Lockday Lockday is a private planner for tasks, calendar and habits: post-quantum encrypted, offline-first, with a decoy PIN, no tracking and no Google services. Features List, board and calendar views. See your tasks as a list, a Kanban board or on a calendar, and switch at any time. Phones, tablets and foldables. Recurring tasks. Daily, weekly, monthly, yearly, every Nth weekday, or a quota like 3 times a week. Repeat on a fixed schedule or from the day you finish. Skip or reschedule one occurrence without breaking the series. Tasks, events and time blocks. Check off what you finish and place the rest on your calendar. Projects, sections and labels, with priorities, deadlines, durations and subtasks. Task templates. Save a set of tasks once and recreate the whole list whenever you need it. Home screen widget with today's tasks, checked off without opening the app. Search and bulk actions. Reschedule, move, label, complete and more, on many tasks at once. Works offline. Create, edit and complete tasks on a flight, underground or on a weak connection. Everything syncs when you are back online. - Habit tracking with streaks, heatmaps and history. (Pro) File attachments: 1 GB of encrypted storage, files up to 100 MB. (Pro) Encryption Your data is sealed on your device with AES-256-GCM. Every item's key is wrapped with a post-quantum hybrid of X25519 and ML-KEM-768. The server sees random IDs, timestamps and sync status, never task titles, notes, dates, labels, project names or attachment contents. Decoy PIN. One PIN opens your real profile, another opens a decoy profile that looks ordinary. Biometric or PIN lock, with auto-lock. Shared projects hand a collaborator the key to that one project and nothing else. (Pro to share, free to join) No account required to use Lockday on a single device. No email. No phone number. No questions. Sign in with a passkey. You can create an account with no password at all. This build has no Google code No Play Services, no Firebase, no Play Billing. Notifications arrive through Lockday's own push server, with nothing extra to install. The same signed APK is on lockday.net/download, with its SHA-256 published alongside. Free forever, Pro for more Every privacy and security feature is free, including sync across devices. The free plan covers 5 projects and 10 labels with unlimited tasks. Pro lifts those limits and adds habit tracking, file attachments and project sharing, as an annual plan or a one-time lifetime purchase, paid in Bitcoin on-chain. No ads, no trackers, no selling your data. Export your tasks any time. How the encryption works, in full: lockday.net/security