Free
$0forever
All the practice, and most of every course.
- The first 60% of the lessons in every course
- Every question bank and past paper
- Every interactive
- Notebooks, points, streaks and progress
- Ask AI and AI marking with your own Gemini key
Pricing
Free to start. One simple upgrade.
Every past paper and every interactive is free, for as long as you like — and so is the first 60% of every course, with no account needed. Pro opens the rest of the lessons and makes the AI tutor and AI marking work without setting anything up.
Pro
Every lesson · AI included$11.89/ month
Every lesson, and AI that just works.
- Everything in Free
- Every lesson in every course
- AI tutor included — no key to set up
- AI marking included — written and handwritten answers
Pro is billed monthly. There is no yearly plan and no contract — switch back to Free whenever you like. Prices in US dollars.
Compare
What is in each plan.
| Free | Pro | |
|---|---|---|
| Learning | ||
| The first 60% of the lessons in every course | ||
| The rest of every course’s lessons | ||
| Every question bank and past paper | ||
| Every interactive | ||
| Instant marking of choice, ordering and sorting answers | ||
| Solutions and mark schemes on every question | ||
| Your account | ||
| Progress, Sigma points and streaks | ||
| Notebooks and lesson notes | ||
| Light and dark mode | ||
| AI | ||
| Ask AI and AI marking with your own Gemini key | ||
| AI tutor included, no key needed | ||
| AI marking of written and handwritten answers included | ||
Questions
Plans and billing.
What does the Free plan include?
Every question bank and interactive, the first 60% of the lessons in every course, notebooks and your progress — plus Ask AI and AI marking when you add your own Gemini key. A guest gets the same without an account.
What does Pro add?
Every lesson in every course, and the AI tutor and AI marking included — no key to set up. See pricing.
Is there a yearly plan or a student discount?
No. There is one paid plan, billed monthly, at one price.
Can I cancel?
Yes, at any time, from Settings → Subscription & billing. You keep everything on the Free plan.
Is the AI free?
With your own Gemini API key, yes — on the Free plan and as a guest. On Pro the AI is included, so you need no key.
How do I get a Gemini API key?
From Google AI Studio, with a Google account. Paste it into Settings → AI. It stays in your browser.
Start free. Upgrade only if you want to.
All the practice and most of every course cost nothing.