Personalized Digital Notebook, Custom Digital Notepad, Customized Blank Notebook Journal, Goodnotes Android iPad Planner, Hyperlinked TabsThis digital notebook is PDF files that work with any PDF annotation apps. Also, the hyperlinked tabs completely function on GoodNotes, Notability, or Noteshelf (or other apps that supported).What's Inside The Notebook:- A digital notebook that can create up to 20 sections by yourself- Unlimited duplicate the blank page with up to 24 paper styles and 2 themes