This would be awesome! Custom stamps or stamps from the app-store similar to sticker packages.

I'd like a custom stamp that I could use to annotate notes and/or note pages, such as a stamp that contains a write-in field for Date, page #, etc. This would be useful for cases where I want to reuse existing templates (e.g. squared paper) without having to recreate the entire template from scratch.

Noteshelf features this. I used a √ stamp to indicate individual page sync to Evernote. Can easily see status in multi-page view.

Please add the Feature.

I completely agree with the idea of a standard set of symbols (arrows, x's, check marks, etc.), in addition to the ability to create a custom stamp.

1. Time stamp would be great

Custom stamps, too, please! I use GoodNotes to annotate sheet music, and I'd love to upload a variety of custom symbols (with transparent backgrounds) to use with a Stamp feature.

Fantastic app!

And since GoodNotes are vector files (so awesome!), give the app the ability to accept custom vector stamps such as transparent PDFs.