Kilonotes

Noteful is a digital note-taking and annotation app optimized for handwriting on iOS devices that blends fluid pen input with powerful document tools. You can write naturally using Apple Pencil or touch input; its custom ink engine records strokes as scalable vector ink, and you can switch between three brushes (ballpoint, fountain, highlighter), sizes, and colors. Beyond handwriting, Noteful supports importing PDFs and Office documents, annotating with typed text, images, and shapes, and layering multiple paper templates within a single notebook. Notes can be organized flexibly via hashtag tagging (including nested tags), rather than rigid folder structures, and you can browse content by tags or pin important pages. It offers a layer system so you can annotate without altering base content, hiding or reordering layers as needed. Editing tools include a precise eraser, lasso selection for moving or resizing content, unlimited undo/redo, and split-view multitasking.

CollaNote is a versatile note-taking and PDF markup app available for iPad, iPhone, and Mac that blends handwriting, sketching, collaboration, and AI tools in one environment. You can choose from over 25 pens and brushes, stabilize handwriting for smoother writing, and use infinite paper with customizable templates. CollaNote supports importing and annotating PDFs, slides, images, and documents, exporting notes to PDF, and backing up via iCloud for seamless syncing. It includes translation tools (for over 90 languages), flashcard creation with media, real-time collaboration across users, and password-protected notes. AI-powered features include a built-in AI calculator for handwritten notes, smart drawing tools (auto shapes), AI sticker generation, and writing assistance. The app also supports audio recording synchronized with handwriting, enabling you to replay lectures or meeting moments in context.