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FourtyFive Free is free forever and includes 50 AI-marked checks per month plus the full personalisation algorithm. Academic Weapon (the Pro plan) is billed monthly or yearly through Stripe — yearly works out about 17% cheaper than paying month-by-month. Exact prices show in your local currency at the top of this page.

The main difference is volume and AI features. Free gives you 50 AI-marked checks per month; Academic Weapon raises that to 150. Academic Weapon also unlocks two AI features — AI Tutor Chat (live help while you're solving) and the ability to generate a fresh similar question with mark scheme on demand. The question bank, mark schemes, subjects, analytics and devices are identical on both plans.

An AI check is one submitted answer the AI Examiner marks for you — typed or handwritten. After a check you get a band-by-band score against the IB mark scheme, a worked solution and an updated topic mastery score in your Study Profile. Free includes 50 checks per month; Academic Weapon includes 150.

No. Plan checks reset on your monthly anniversary and don't roll over. Yearly subscribers still get fresh 150-check allocations every month, not one annual lump. Referral-bonus checks, if you've earned any, are banked separately and don't expire — so you can save them for mock-week.

Yes. Academic Weapon is a Stripe subscription you can cancel any time from your account settings — your Pro features stay active until the end of the period you've already paid for, and you won't be charged again. You can downgrade to Free at the end of the period, or upgrade from Free to Pro instantly.

Yes — paying annually saves roughly 17% versus twelve monthly payments. You still get fresh AI checks every month rather than one big annual allocation, and you still get the same AI Tutor Chat and similar-question generation. Yearly is the better deal if you're studying for May or November IB exams.

No. You can type all your answers, handwrite them on an iPad with Apple Pencil, or use the FourtyFive writing tablet — a pressure-sensitive USB stylus pad that plugs into any Mac, Windows or Chromebook laptop. The AI Examiner marks handwritten answers to the same IB mark scheme standard as typed answers. Academic Weapon yearly subscribers get 50% off the writing tablet.

All six FourtyFive subjects — Mathematics: Analysis and Approaches (AA), Mathematics: Applications and Interpretation (AI), Physics, Chemistry, Biology and Economics — are included at both SL and HL on every plan. You don't pay per subject.

FourtyFive bundles AI marking, AI tutoring, personalised IB recommendations and a 4,000+ question bank into one subscription. Most competitors charge separately for question banks, video courses or tutoring, and human tutors typically cost more for a single hour than a yearly Academic Weapon plan does for a whole IB session of unlimited practice.

Yearly Academic Weapon is already discounted around 17% versus monthly billing, and yearly subscribers get the FourtyFive writing tablet at 50% off. For school or class licences we work directly with IB coordinators — get in touch via the contact form on this page.

Yes. Any plan you start gives you continuous access through your mocks and your real IB exams (May or November session) as long as the subscription remains active. The personalisation algorithm gets more accurate the longer you use it, so starting earlier in DP1 or DP2 generally produces stronger recommendations by exam season.

We analyse your answers to personalise recommendations, build your Study Profile and improve the AI Examiner. We don't sell personal data to third parties. Stripe handles payment information; we never see your full card details. See the Privacy Policy for full detail.