Simple pricing. Start free.
Two complete lessons are free in full — A1.1 Water and B1.1 Carbohydrates and lipids — and revision slides are free on every lesson. Pro unlocks the rest of the syllabus.
Everything you need to judge whether this is worth paying for.
No card, and no account needed to start.
What you get
- Two lessons open in full — A1.1 and B1.1 — with study notes, quiz, skills practice and exam papers
- Every answer explained, with the misconception it's testing
- SL and HL, with HL-only material kept out of SL
- Revision slides on every lesson, all 4 themes
- Sit any paper a teacher shares with you by code
- Progress saved across your devices when you sign in
The whole syllabus — notes, questions and exam papers for every lesson.
The most flexible way to try Pro.
Everything in Free
- Two lessons open in full — A1.1 and B1.1 — with study notes, quiz, skills practice and exam papers
- Every answer explained, with the misconception it's testing
- SL and HL, with HL-only material kept out of SL
- Revision slides on every lesson, all 4 themes
- Sit any paper a teacher shares with you by code
- Progress saved across your devices when you sign in
Plus, only with Pro
- The other 38 lessons (34 live now, 4 coming soon), each with study notes, quizzes, skills practice and exam papers
- All 2,381 exam-style questions, each with a markscheme
- Full practice exam mixed from the whole syllabus — Paper 1A, 1B and 2 in real format and timing
Build and share real papers from the free lessons.
A free teacher account is all you need.
What you get
- Paper generator in every format — quiz, 1A, 1B, Paper 1, Paper 2, either section, or hand-picked
- Questions from the two free lessons, A1.1 and B1.1
- Print papers and markschemes — lean answer key or full explanations — or save as PDF
- Share codes — students sit the exact paper you built
- Assign a paper to your class — see who handed in, their scores and time taken, and mark written answers
- Revision slides on every lesson to use in class
Build papers from the entire question bank, for every class you teach.
Yearly only. Paid once, never renews by itself.
Everything in Free
- Paper generator in every format — quiz, 1A, 1B, Paper 1, Paper 2, either section, or hand-picked
- Questions from the two free lessons, A1.1 and B1.1
- Print papers and markschemes — lean answer key or full explanations — or save as PDF
- Share codes — students sit the exact paper you built
- Assign a paper to your class — see who handed in, their scores and time taken, and mark written answers
- Revision slides on every lesson to use in class
Plus, only with Pro
- Questions from all 40 lessons — the full bank of 2,381
- Build papers spanning any topics and both levels
- Full study notes for every lesson
Passes, not subscriptions
You pay once and your pass runs until its end date. Nothing renews by itself and you're never charged again. Not happy? You get a full refund within 30 days of paying — email [email protected]. Everything listed as free stays free.
How to pay
Paying for Pro
Checking the payment options for where you are…
- Create a free account in the app — your pass is added to it, so it works on your devices.
- Open Upgrade to Pro from your account menu, top right. You'll see where to send the payment and your own payment code.
- Send the payment by Whish — from the Whish app, or in cash at any Whish shop — with your payment code in the transfer note.
- We switch your account to Pro, usually within a few hours. Paid for Until your exams? Add your exam year to the note too.
Teachers: the same steps from a teacher account — open Teacher Pro in your account menu ($149 for 12 months).
Open the app · Questions? [email protected]
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Questions
What you're actually getting
Which syllabus is this built for?
The current IB Biology syllabus: the guide published in 2023 and first examined in May 2025. We follow its latest edition (updated May 2026, used from the May 2028 exams), which clarifies what students need to know and adds the official data booklet. Every lesson is written against the guide's syllabus statements, and questions follow the data booklet's notation and required diagrams. The questions are our own, written in the style of IB papers — they aren't past papers.
Are these real IB past papers?
No. They're original exam-style questions written to the real papers' structure, command terms and mark allocations, each with its own markscheme. Every question is tagged with the syllabus statement it assesses.
What exactly is free?
Two complete lessons — A1.1 Water and B1.1 Carbohydrates and lipids — with their notes, quizzes, skills practice and exam papers. Revision slides are free on every lesson in all four themes. Students can also sit any paper a teacher shares by code.
Do students need an account?
Not to start. You can study the free lessons and sit a teacher's shared paper without signing up. Without an account, progress is saved on your own device; with a free account, it follows you to every device you sign in on.
How do share codes work?
A teacher builds a paper and gets a short code. Any student who pastes that code gets exactly that paper — same questions, same order, same timing — then marks their own work against the markscheme. No accounts, no files to email.
Do I see my students' results?
Not yet. A student who sits your paper marks their own work against the markscheme and sees their score immediately, but that score stays on their device — nothing is sent back to you. Teacher-side class results are the next feature we're building. Today the honest answer is that the share code gives your class the same paper and instant feedback, not a gradebook.
Is SL and HL handled properly?
Yes. Pick a level and the question bank respects it: HL-only material never appears in an SL paper, and HL-only lessons aren't offered at SL.