Correctness isn't the paid part. Every plan runs the same engine, the same double-checked answers and the same server-side marking. What money buys is volume, depth and paper.
Free, and staying free
A full 45-question mock — real blueprint, Sections A and B — and a new one each time we publish
The 75-minute clock, and marking the moment you submit
Every answer worked out twice before you see it
1 drill session per topic, up to 3 total, in any 24 hours
Past-paper topic analysis, common pitfalls, formula sheet and exam timetable
Your score history, topic breakdown and per-question timing
What a paid plan adds
2 Paper 1 + 2 Paper 2 mocks per 30 days, on top of the free one
PDF export — question paper, answer key and worked solutions
Repeated-mistake tracking — the errors that keep coming back across your marked papers, not just inside one
2 drill sessions per topic, per day
Counts, not adjectives: every paid allowance above is a stated number — per 30 days for mocks, per 24 hours for drills. The free mock runs on no clock: you get the current one, and the next one when we publish it. We don't sell an unlimited plan, because we couldn't honestly deliver one.
The Season Pass ends that day and never renews, so nothing more is charged. Your account goes back to the Free plan: your score history and topic breakdown stay, and the free mock, instant marking and free drills keep working. The extra mocks, PDF export and repeated-mistake tracking stop. Monthly is different: it renews each month until you cancel it in Manage billing.
I'm on Monthly. Can I switch to the Season Pass?▾
Yes, while the pass is on sale (until the end of 12 Dec 2026, Hong Kong time). Sign in and press Upgrade on the Season Pass card above, or upgrade from your account page. The days of your current Monthly period that you've paid for and not used come off the price, and your Monthly subscription ends as soon as the pass is paid for, so it won't renew again.
What's in the Paper 1 PDFs?▾
Each Paper 1 mock you generate comes as three printable PDFs, each in English and in Chinese: the question-answer book (19 questions, with ruled space under each for your working), the marking scheme (the full solution, with the marks for each step) and the answer key (each part's final answer). Paper 1 has no online sitting: you print it, sit it on paper and mark it yourself with the scheme. Paper 1 mocks come with the paid plans.