Good customer service! Good customer service! I've stopt using brilliant, but forgot cancel substription, so next subsription got payed automaticly. I've didn't want to use brilliant this year so i contacted to customer service. And got contacted to Steph. I got helped quickly, and kindly. Its nice to meet company which is not made just for taking people money. Big thanks to Steph!

Amazing App They really deliver what they advertise. I really enjoyed how courses are structured and they help on improving your problem solving approach. Once you start you can't stop, keep saying one more, one more. I love it.

Disappearing classes Although the classes are interesting and the math is (sometimes) well explained, there are also a lot of issues with Brilliant: *Classes disappearing in the middle of doing it. Algebra 2 for example *Classes skimming through essential piece of information, e.g. Introduction to linear Algebra. I'd really recommend a mix of other solutions if you want to further your understanding of mathematics. Khan Academy & 3Brown1Blue (and many other free resources) provide better explanation and have the same level of interactivity.

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

Excellent learning tool Content is designed simply to increase readability, and attached to examples that help solidify the principles. Very organized and navigating courses and content is smooth. Fair customer service that strives to evaluate needs on an individual level.