Samsung Write on PDF offers a variety of brushes and writing styles to annotate documents with, to fit a variety of needs. Not only that, but you can easily change the brush’s color and size with the app’s intuitive controls.
That being said, it’s worth noting that to edit any specific PDF, the document will need to have editing permissions enabled. Only with permissions will you be able to create annotations or fill fields.
Overall Samsung Write on PDF is an essential app for writing on and sharing PDF files. On top of all that, it also has an intuitive PDF viewer you can use to read any document on your device.