Red Pen

Red Pen is a purchasable web app that allows users to provide quick visual comments on projects that need feedback while keeping track of previous versions of each project. The price of the tool varies from $20 to $90 based on the number of projects you want to run at the same time. Regardless of which package you choose, Red Pen offers unlimited team members, singles, project versions, and invites. This is a great tool for collaborative group work on visual design projects.

 

Red Pen