Pricing
One course free.
Then go all the way.
Foundations is free forever. Pro unlocks the other nine courses — 256 lessons and over 1,800 problems.
Free
£0/forever
No card required.
✓ Course 0 — Foundations (24 lessons)
✓ 2 full Pro lessons — The Gradient & Eigenvectors
✓ Every interactive figure
✓ Unlimited auto-graded practice
✓ Progress saved on this device
Most popular
Pro
£42/year
That’s £3.50/mo — save 50%
✓ Everything in Free, plus:
✓ All 10 courses · 285 lessons
✓ 1,000+ problems, endlessly refreshed
✓ Progress synced across devices
✓ Every future course included
Card required to start — you won't be charged during the trial.
Then billed automatically · cancel anytime
Prefer to pay once?
£42 once — a full year of Pro. No subscription, nothing renews.
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Pay once
No card for the free course · cancel in two clicks.
Price includes VAT where applicable.