The six we cover
(for now).
Every subject is built around the current IB syllabus and marked against real IB mark schemes. More subjects are on the way — see what's coming next below.
Pick a subject,
start practising.
Open the syllabus map for any of the six IB subjects we cover — Math AA, Math AI, Physics, Chemistry, Biology or Economics — at SL or HL. Every plan includes them all.
Spend about 6 minutes rating your confidence on every topic in the syllabus. This becomes your starting Study Profile and tells the algorithm where to begin.
Answer real IB-style questions, typed or handwritten. The AI Examiner marks each answer against the IB mark scheme in seconds, updates your topic mastery and queues your next-best questions.
Everything you need
to revise smarter.
Six things that make FourtyFive different from another generic question bank.
If only 60 meters of fencing material is available, determine the dimensions w × l that maximize the enclosed area.
A(w) = w(60 − 2w) → A'(w) = 60 − 4w = 0
w = 15, l = 30
Optimization set up cleanly — derivative correct. Lost 1 mark for not verifying the maximum with the second derivative test.
Marked like an
IB examiner.
Every answer is checked against the IB markscheme. You get a level, a band-by-band breakdown, and a worked solution that explains exactly where points were won or lost.
- Level 1–7 with markscheme rationale
- Worked solutions, not just answers
- Suggested follow-up topics in one click
Questions,
answered.
Can't find what you're looking for? Email our student team — we usually reply same day.
Which IB subjects does FourtyFive cover?
FourtyFive covers six IB Diploma subjects at both SL and HL: Mathematics: Analysis and Approaches (Math AA), Mathematics: Applications and Interpretation (Math AI), Physics, Chemistry, Biology and Economics. Every question is mapped to the current IB syllabus and marked against real IB mark schemes by the AI Examiner.
Which IB subjects are coming next to FourtyFive?
We're actively adding more IB Diploma subjects — the current shortlist is shown on the "coming soon" strip on this page. If your subject isn't there, let us know via the contact form below and we'll factor demand into the roadmap.
Does FourtyFive cover Math AA and Math AI?
Both. FourtyFive covers Mathematics: Analysis and Approaches (Math AA) and Mathematics: Applications and Interpretation (Math AI) at both SL and HL, with full coverage of Papers 1, 2 and 3 where applicable. The AI Examiner marks calculator-allowed and non-calculator answers, including handwritten working with Apple Pencil or the FourtyFive writing tablet.
What's the difference between SL and HL inside FourtyFive?
Each subject's question bank is tagged by HL-only, SL-only and shared topics, and your Study Profile only tracks topics at your selected level. Switching between SL and HL inside a subject is free and instant — your topic ratings carry over so you don't have to start from scratch.
How many practice questions does each IB subject have?
FourtyFive currently has around 4,000 syllabus-mapped IB questions in total, and the bank grows every week. Coverage spans every subject we offer, with the mathematics question banks (Math AA and Math AI) the largest today and Physics, Chemistry, Biology and Economics expanding rapidly behind them.
Are the questions on FourtyFive real IB past papers?
The questions are IB-style — written and reviewed by IB subject experts to match the style, difficulty and command terms of real IB exams. They aren't licensed past-paper reprints, which lets us match real-exam pacing and difficulty without infringing IBO copyright, and lets us generate fresh questions for Pro users on demand.
Is the FourtyFive question bank aligned with the current IB syllabus?
Yes. Every subject is mapped to the current IB Diploma Programme syllabus and reviewed when the IBO updates a course. You won't find retired material in your Study Profile — and when the syllabus changes, topics are remapped automatically so your mastery scores keep their meaning.
Does FourtyFive cover Papers 1, 2 and 3?
Yes. Every subject on FourtyFive covers the papers in that subject's IB assessment. For Math AA and Math AI that's Papers 1, 2 and 3 at HL and Papers 1 and 2 at SL; for Physics, Chemistry, Biology and Economics it's the corresponding papers in each subject's IB specification.
Can I study multiple IB subjects at once on FourtyFive?
Yes. Every plan — including the Free plan — gives you access to all six FourtyFive subjects. Your Study Profile tracks topic mastery separately per subject, and the personalisation algorithm balances recommendations across whichever subjects you're actively practising.
Do I pay extra per IB subject?
No. One FourtyFive account, one plan, all six subjects included. You don't pay per subject or per paper, and there are no per-subject add-ons. The Free plan and the Academic Weapon (Pro) plan both include the full subject catalogue.
Does FourtyFive teach the subject content, or just give me practice questions?
FourtyFive is a practice-and-feedback platform, not a video-course platform. You learn the subject content in school, with a teacher or with a tutor, and then use FourtyFive to practise IB-style questions, get IB mark-scheme feedback from the AI Examiner, and let the algorithm decide which topics you need to revise next.
Why doesn't FourtyFive cover my IB subject yet?
We launched with six high-volume IB subjects — Math AA, Math AI, Physics, Chemistry, Biology and Economics — because we wanted depth (full syllabus coverage, IB-trained marking) over breadth. We're actively expanding the catalogue and you can tell us which subject is most useful to you via the contact form on this page.
Your IB. Your pace.
Your platform.
Free to start. Free to explore. Upgrade only when you're ready.
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