UX Metrics offers free tools to research, test, and refine any information architecture. Run unlimited online card sort and tree test studies with as many participants as you want, whether you're a complete beginner or a seasoned research expert. Card sorting will help you understand and optimize for your users' mental models, while tree testing will help validate and optimize your information architecture so that you can make confident recommendations and design decisions. UX Metrics studies are optimized for a great participant experience on any device, and you can invite participants to your study by providing them with the included shareable link. You'll get instant insights with crystal clear reports that can be easily shared with your clients and stakeholders.