Squid App is a note-taking app that allows you to write and draw on your Android device using an active pen, passive stylus, or your finger. It also allows you to markup PDFs to fill out forms, edit/grade papers, or sign documents.
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You can import images, draw shapes, add typed text to your notes, and easily select copy/paste, and move content between pages and notes. Squid also allows you to organize your notes within notebooks, making it easy to keep your notes and work organized.