AXS Companion | 142 followers on LinkedIn. The AXS Companion is a free, open online resource to help students fill out the Common App | The AXS Companion to Common App is a free, open online resource. As an educational tool, it is used side-by-side on a phone or computer as students answer questions on their Common App application. The goal is to increase access and clarity for students in under resourced communities as they apply to college.