Bars marks is a free Chrome add-on developed by Denis Pashkov. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This add-on is designed to help users track new grades assigned in the electronic diary system called "Bars".

The add-on works by allowing users to access the grades page and click on the extension icon to record the existing grades. If a few days pass and teachers assign new grades retrospectively, users can simply follow the same process to view a report on the new grades.

Bars marks provides a convenient solution for users who want to stay updated with their grades without manually checking the electronic diary system regularly. With its simple functionality, this add-on enhances the user experience and saves time.