Amazing resource It's the kind of resource that any student should have. It has a great approach, and you learn by doing. Besides the website being an amazing tool, their team is incredibly responsive and helpful for any support issues.

Great interactive learning tool Great interactive learning tool, works like duolingo but for maths!

Refund request Excellent response from Customer Service to my refund request which was processed in a quick and friendly way.

Perfect app and great support team This is indeed great app and great people who support it. I think it is hard these smartphone days and distractions all over to focus and study, although it is so interesting stuff to learn. I wish I had the time and learning skills to use it properly. Last thing to note the subscription model, where you automatically paying w/o noticing should be changed. The company must try to find a way to inform customers before auto renewl period

This is definitely worth your time! First, this company produces an amazing product. The lessons are broken into easily digestible bits that you can consume at your own pace. The content of these lessons are each important in their own right, and fit together to form the larger lesson seamlessly. Second, when I had any issue at all, they responded immediately, respectfully, and with clear concern for my issue and finding a resolution that I was happy with. The people I have dealt with directly have all been very helpful, friendly, and professional. Thank you, Brilliant.org, for an amazing product, your amazing employees, and simply a very pleasant and enjoyable experience while improving myself and learning something new.