Plans & pricing

Pay for what you need

Buy individual chapters from any subject page, or choose a plan for a fixed period. All payments are one-time: nothing renews automatically.

Every chapter is sold on its own, with its price, page count and access period shown on the chapter page before you pay.

Individual chapters suit targeted revision. Plans cover every included chapter, including ones added during your plan.

If you already own a chapter, a plan won't replace that access. You always keep the longest access you have.

Any applicable taxes are itemised at checkout before you pay.