Lockday encrypts your data with quantum-resistant cryptography before it reaches our servers. Offline-first. No ads. No tracking. No email. No phone number. No questions.
Daily, weekly, monthly, yearly, every Nth weekday, or a quota like 3 times a week on whichever days suit you. Repeat on a fixed schedule or from the day you actually finish, and skip or reschedule a single occurrence without breaking the series.
See your tasks as a list, a Kanban board, or on a calendar, and switch at any time.
Invite specific people to a project and work on it together. They get the decryption key for that project alone, so they see what's shared and nothing else.
Group tasks into projects, split a project into sections, and tag across them with labels.
Save a set of tasks as a reusable template, then spin up the whole list again in one tap, for packing lists and repeatable routines.
See today's tasks at a glance and check them off without opening the app. On both Android and iOS.
Create, edit, and complete tasks on a flight, underground, or on a weak connection. Everything syncs automatically when you are back online.
Set a decoy PIN that opens an ordinary-looking workspace, while your real tasks stay hidden and encrypted. An optional panic PIN wipes the real data on unlock. For when handing over the phone is not optional.
Task titles, notes, due dates, project names, and labels are sealed on your device with AES-256-GCM before they reach a server. Each item key is wrapped with a hybrid X25519 + ML-KEM-768 scheme, so your data stays safe even against a future quantum computer.
The server only holds encrypted data, never a word you write. The keys even resist future quantum computers, defeating "harvest now, decrypt later."
Read the full security model →Every privacy and security feature is free. Pro lifts the limits and adds power tools.
Pay monthly, yearly, or once.
Everything in Free, plus:
Pay through the App Store or Google Play. On the direct builds, annual and lifetime plans also accept Bitcoin, paid on-chain.
Go ProA private place for ideas, errands, and reminders. Free to start.