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.

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.

Can't cancel 7-day trial (solved) Tried to cancel the trial before deadline, but the cancel subscription button won't work (still doesn't work now). No way to cancel, I got billed €124,95. Immediately requested for a refund and haven't used any courses since being charged, will update if I receive it. Be careful with this company. UPDATE: Thanks you Steph from customer service, who has promptly issued a full refund after an email. It may be better to directly email the support team rather than to submit a refund request through the app. The app itself is good to awaken a beginner's interest, but offers not much after that. If you want to cancel a trial, make sure to do so through email to be safe.

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

Such a great way to learn Such a great way to learn! Algebra is like a foreign language to me most of the time. This program helps me decipher and understand the practical application of Algebra. I would 100% recommend Brilliant to anyone in search of a better way to engage with math. Also, their customer service folks are excellent.