While most iOS annotation apps only let you markup PDF files, Scribble lets you annotate 35 different document types.
So, for example, if a colleague sends you a diagram, PowerPoint deck, Word doc, Excel spreadsheet, or other file, you can draw big red Xs on them.
You can scribble notes and add question marks to the document, too. Most importantly, you’ll keep the important approval process flowing without needing a laptop or the native apps used to create the documents.
Scribble for iPad is $4 and you can get it here: