Lockbook: Private Notes

In-app purchases
5.0
11 reviews
Content rating
Teen
1K+
Downloads
Content rating
Teen
Users Interact, In-App Purchases
Learn more
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About this app

Lockbook is an end-to-end encrypted notes app for writing, sketching, storing files, syncing across devices, and collaborating in real time. Your notes are encrypted before they leave your device, so even we can't read them.

Lockbook is 100% open source:
https://github.com/lockbook/lockbook

Fast & Native:
We built Lockbook for everyday use because we use Lockbook every day. Our native apps feel at home on every platform, with fast sync, offline support, and a polished Markdown editor for serious notes.

Secure:
Keep your thoughts to yourself. Lockbook encrypts your notes with keys generated on your devices. Only you and the people you share with can access your notes, folders, sketches, and files.

Private:
Know your customer? We sure don't. We don't collect your email, phone number, or name. We don't need a password. Lockbook is for people with better things to worry about than privacy.

Collaborative:
Share folders, edit notes together, and see live updates from collaborators without giving up end-to-end encryption.

Open:
Write in Markdown, sketch in SVG, and keep your work in formats you can actually use.

Honest:
Be the customer, not the product. We sell a note-taking app, not your data.

Developer Friendly:
The Lockbook CLI fits right into your favorite chain of piped-together Unix commands. Search your notes with fzf, edit them with vim, and schedule backups with cron. When scripting doesn't cut it, use our Rust library for a robust programmatic interface.

Website:
https://lockbook.net
Updated on
Jul 16, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

5.0
11 reviews
M. Tolga Günok
July 5, 2026
Beautiful app, but the left and right margins in android app is too wide. same text uses 1 line in keep and Joplin but 2 lines in lockbook. It is a shame just this little inconvenience ruins the usability. There should be an option to reduce the margins while viewing the document, then i could use this app.
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Lockbook
July 8, 2026
Hey Tolga, thanks for using Lockbook and leaving feedback. We hear you and we reduced the margins by default in the latest version (26.7.4) which is released today. Wanna give the app another spin and let us know how it goes? You can also check out the before/after screenshots here https://github.com/lockbook/lockbook/pull/4835
Ahmed Shaikh
October 4, 2025
very easy to use and performs well!
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Bradly VanDerStad
November 23, 2025
Great solution for private note taking
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What’s new

Release notes on https://github.com/lockbook/lockbook/releases/tag/26.7.16
Content rating
Teen
Users Interact, In-App Purchases
Learn more

App support

About the developer
LOCKBOOK LLC
parth@lockbook.net
2115 Amwell Rd Somerset, NJ 08873 United States
+1 973-809-0571