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The notes app built for handwriting Source


Saber is the notes app built for handwriting.

It's designed to be as simple and intuitive as possible, while still delivering unique features that you'll actually use. Additionally, Saber is available across all your devices, large and small, and syncs between them seamlessly.

Notably, it can invert your notes when you're in dark mode. This allows you to write with white ink on a black background, which is much easier on the eyes in low-light environments like when the teacher turns off the lights in class. Images and PDFs are also inverted, so you can still use a digital printout or a textbook without the fuss.

Saber uses a dual-password system to protect your notes from anyone but you, even if they have complete control over the server. You can safely store your notes on the official Saber server, another server, or even host your own!

The app is completely open-source so that anyone can view the source code and see exactly what it's doing and how it handles your data. Many other note-taking apps are closed-source and proprietary, meaning that their inner workings are a mystery to the public.

As someone who studies maths, highlighting multi-line equations was always a hassle with other apps, where the highlighter would change color when it overlapped with itself. Another problem I had was that in some apps, the highlighter would render on top of the text, fading it out and making it hard to read. Saber's highlighter has no such issues. It utilizes canvas compositing to render the highlighter in a way that is consistent with/better than traditional paper, where it handles overlaps and maintains color consistency.

Saber has everything you need to keep your notes organized. Create folders inside folders inside folders to your heart's content with no limit on the number of nested folders. And even though a note may be buried deep within a nested folder, you can still access it easily with your most recent notes always available on the home screen.

Discover a whole new way to capture and organize your thoughts with Saber. Whether you're a student, professional, or creative mind, Saber is your trusted companion for digital handwriting. Download now and let your ideas flow freely!



To make the app launch on GLES 2 devices, make sure to set the environment variable LIBGL_ALWAYS_SOFTWARE=1.

Project links: Links to (pages with) screenshots:


Mobile Fit: 5

Perfect - this app fits your phone screen just fine out of the box and works nicely with touch input!

Project status: mature

This project has been in development for a long time and is usually well beyond its 1.0 release. It should work fine.


Connectivity: This app works better with a continous internet connection, but does not require it.

 Every feature of this app can be accessed via touch screen, no mouse or keyboard needed.

 This app is (according to its appstream metadata or description) intended to be compatible with mobile devices.


Is this app packaged for my distribution?

green: current and packaged,
red: packaged, but not current, ratings and other details may not apply.

Packaging status

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Get it on Flathub!

Install as flatpak: https://flathub.org/apps/com.adilhanney.saber.flatpakref

Get it on Snapcraft!

Please note that Snap only supports these distributions.

If you're lucky*, you can install this app by just hitting this button:


* You need to have an appstream:// handler, e.g., GNOME Software or KDE Discover, installed and the app needs to be available in a configured software repository, more details.

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Licensing and technical details

License: GPL-3.0-only Metadata: MIT

Frameworks: Flutter

Programming languages: Dart

Build system: flutter

AppStream Metadata URL: https://raw.githubusercontent.com/saber-notes/saber/main/flatpak/com.adilhanney.saber.metainfo.xml