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Every expert you admire was once a beginner who refused to quit.
Every expert you admire was once a beginner who refused to quit.
Interactive, visual lessons in maths, science, logic, data and computer science.
Brilliant teaches you to think — maths, logic, science and CS concepts through visual puzzles. Teyro teaches you to do: coding and AI skills where each lesson makes you apply the idea. Brilliant is mostly behind a subscription; Teyro is free to start. For maths intuition pick Brilliant; for practical coding and AI with a stronger habit loop, pick Teyro.
Pick Teyro if: you want to write code and use AI tools, not just understand concepts.
Get Teyro freeFree to start · No ads · iPhone, Android and web
| Feature | Teyro | Brilliant |
|---|---|---|
| What you learn | Coding (web development, mobile apps, programming fundamentals, software development) and AI (using AI tools, building agents and automations) | Maths, logic, science, data and computer science |
| Lesson format | Four short steps per lesson: learn one idea, apply it straight away, reflect, then go deeper if you want | Interactive visual problem solving |
| Price model | Free to start. Many courses are free end to end; paid courses let you try the first two lessons free | Limited free lessons; Premium subscription |
| Where it runs | Runs in the browser and installs to your Home Screen on iPhone and Android in one tap — no app store | iOS, Android and web |
| Motivation system | Streaks with freezes and repair, weekly leagues, three daily quests, chests, coins, hearts | Streaks and XP |
| Certificates | No completion certificates yet | None |
| Community | Each course has a community you join after your second lesson | Minimal |
Competitor prices change often, so we describe the pricing model rather than quote a number. Check Brilliant's site for today's price.
We read 60 recent App Store reviews of Brilliant. These themes came up most in the 12 one- and two-star reviews.
Small sample from Apple's public reviews (US, UK, India, Nigeria, Canada, Australia), collected Sep 28, 2026. Unhappy reviewers are not typical users — treat this as a list of risks to check, not a verdict.
Every comparison page on this site ends with this list, so you can decide with the full picture.
Khan Academy is free for maths and science. For coding and AI, Teyro is free to start and many courses are free end to end.