Saber is a handwriting-focused notes application designed for simplicity and efficiency. It offers unique features such as dark mode inversion, allowing users to write with white ink on a black background, which enhances visibility in low-light settings. Additionally, Saber supports the inversion of images and PDFs, making it convenient for users who need to reference digital materials while taking notes.

The app prioritizes user security with a dual-password system, ensuring that notes remain private even on shared servers. As an open-source application, Saber allows users to review the source code, promoting transparency in data handling. Its advanced highlighter eliminates common issues found in other apps, providing consistent color rendering for multi-line equations. With unlimited nested folders for organization and easy access to recent notes, Saber is tailored for students, professionals, and creatives looking for a reliable digital handwriting solution.