It's easy to use, it has great visualization tools so that you can easily test your landing pages or even ads without having any prior coding knowledge! I think there are some minor bugs here and there but nothing major (like crashing). The support team was very helpful when we had issues with our account during testing phase of one project. We've been using this tool since last year in production environment at my current employer - they have helped us solve all problems related to performance optimization through their dashboard as well as API integration which saved me tons of time compared to other analytics platforms out there.