What Is a PDF Annotation App and Why You Need It

Digital planners are interactive PDFs—but to write or type on them, you’ll need a PDF annotation app. These apps allow you to fill out your planner like a notebook: writing, typing, highlighting, and more.

Why you need one:

  • ✍️ Write with a stylus (or finger)
  • ⌨️ Type text directly on planner pages
  • 🔗 Use hyperlinks to navigate
  • 🧠 Highlight, erase, and customize

💡 Top apps: GoodNotes (iOS), Notability (iOS), Xodo (Android), Adobe Acrobat (Desktop), and Noteshelf (Cross-platform).

Next: Learn How to Use the Text Tool to Type in Planners.

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