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.

Good for children (i guess) The idea is cute but imho accomplishes nothing. It tries to "gamefy" the learning experience but just muddles the learning in the process. I can see this being a fun way to learn about our world for small children or maybe young teens, but the site is definitely marketed towards all age groups. Just reading the wikipedia article about whatever subject you want to learn will most likely get you a better grasp on the topic than spending money on the premium subscription, which a lot of it is being spend on making 'cute animations' and keeping the app running. I have yet to come across actual exercises which require any deeper skill whatsoever. If you have a small child at home which wants to learn about science and the like in a playful way or if you are an adult and want to feel like you are learning something new on your commute this is probably not something bad. For me though this feels like another attempt to make an app for something which does not need it. Buy a book instead.

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.

Customer Support Just want to say that in these days of AI/Automation, it was extremely pleasant to get real, prompt and excellent customer support. Maria responded right away and took care of the matter right away! Awesome!

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.