Recommendations to others considering Optimal:
If you are a UI/UX designer and need to test his design then you can try this application. Review collected by and hosted on G2.com.
What problems is Optimal solving and how is that benefiting you?
It is used by me for the purpose of user testing of the projects of the clients and also some self-projects. Here you get to do not only user testing but also you can get through the information architecture and reiterate the designs based on such information. Review collected by and hosted on G2.com.