4.8
Free practice for the subjects your course assumed you already knew.
Interactive STEM courses with a daily lesson and a Premium wall.
Best for building intuition in maths, cs, and science between lectures
Reviewed 16 September 2026 · Prices checked the same day
4.7
102K reviews
Brilliant sells interactive courses in maths, computer science, data, and science, plus Koji, its tutor. Free allows a daily lesson with limits. Premium unlocks the catalogue, unlimited lessons, and the full tutor. Billing is annual (one payment, renews yearly), monthly, or a family plan for up to six. Brilliant does not print a stable public dollar figure on the logged-out subscribe page. US list has long sat near $12.50 a month effective on annual or about $25 monthly; confirm at brilliant.org/subscribe. Checked 21 September 2026.
This is not your course. It is a gap-filler when the lecture jumped a concept. It will not grade your problem set.
Pricing
freemium
Premium annual (best rate), monthly, or family up to 6; confirm at checkout
Free version
Daily lesson with caps; Koji preview
Platforms
Web · iOS · Android
Use it the week linear algebra stopped making pictures in your head. Then go back to the problem sheet.
Checked 2026-09-21
| Model | Freemium |
|---|---|
| What free actually includes | Daily lesson with caps; Koji preview |
| Cheapest paid tier | Premium annual (best rate), monthly, or family up to 6; confirm at checkout |
| Student pricing | None published |
Links from StudyApps include ref=studyapps.
Daily lesson with caps; Koji preview Checked 16 September 2026.
Cheapest paid plan: Premium annual (best rate), monthly, or family up to 6; confirm at checkout. Prices checked 16 September 2026.
Building intuition in maths, CS, and science between lectures
Logged-out site hides the real price
Free practice for the subjects your course assumed you already knew.
Free graphs, geometry, and 3D that schools already trust.
A computational engine, not a chatbot that guesses the integral.
