MerlinPix is a math problem solving app created by Team Merlin that allows users to take photos of math equations, import photos from their camera roll, and receive step-by-step solutions. Based on user testing, the app provides all the key features of PhotoMath and MathPix with additional capabilities for matrix problems. User feedback highlighted areas for improvement including the cropping tool, keyboard functions, and labeling of buttons. The team plans to address these issues in future versions.