Lockbook is a privacy-focused note-taking app for writing Markdown notes, keeping documents and making simple sketches. Its folder-based workspace puts the selected note beside a list of files and folders, while a toolbar offers formatting controls for users who do not want to type Markdown syntax. Content is encrypted on the device before cloud synchronization, and notes can also be used offline. Basic file tools support organizing, moving, renaming, deleting and sharing documents, but do not replace Windows File Explorer.
| Author: | Lockbook |
| License: | Freeware |
| Price: | $2.99 |
| Released: | Oct 10, 2026 |
| File size: | 74.90 MB |
| Downloads: | 46 |
| Keywords: | secure document organizer, Lockbook, download Lockbook, editor, markdown note editor, write note, offline notes, sketch note, sketch note app, Markdown note, memo, private note taking app, write, note, encrypted notes, Lockbook free download |
| Author URL: | https://lockbook.net/ |
Lockbook is a privacy-focused note-taking application for people who want to keep written notes, documents and simple sketches together. It organizes content in folders and presents the selected item in a clean editing workspace, with the folder list beside the open note. Its focus is on private, personal documents rather than serving as a full replacement for Windows file management or a dedicated art application.
Notes can be written in Markdown, using simple formatting symbols for elements such as headings and bold text. Lockbook renders the formatting as the note is written or viewed, while a toolbar provides text-formatting controls for users who prefer not to remember Markdown syntax. This supports both quick memos and longer, structured documents without requiring a separate word processor for basic writing tasks.
The application also includes drawing tools for quick sketches and handwritten content. These are suited to rough diagrams, simple mind maps, arrows or circles used to mark up an idea, rather than detailed illustration or design work. Notes and related files can be organized in directories; users can create folders, move or rename items, and delete them. Documents can also be shared, while offline use lets users work with content without an active connection.
Cloud synchronization keeps content available across devices. Before data leaves the device, Lockbook encrypts it, so the cloud stores unreadable encrypted content rather than plain-text notes. This local encryption is central to the application's approach to privacy and is useful for personal writing or documents users do not want stored as readable data on a server. Sharing and synchronization complement the folder-based workflow without turning the application into a general-purpose file manager.
Lockbook is freeware for Windows 10 and Windows 11, with support for 32-bit and 64-bit Windows 10 systems. Its file tools are intended to manage notes and associated documents: they do not provide the bulk operations, advanced sorting and filtering, drive management or system-wide access found in File Explorer. It is best suited to users seeking a focused workspace for secure notes, Markdown documents and occasional sketches.