Pricing
Written answers and the first eight mechanism drawings are free for everyone. Members also get a free drawing from every topic, and a plan unlocks every drawing plus the Student Portal for private answers.
Exam Crunch Pass
For the week before the midterm.
£3.99per week
- 2 private expert answers per month
- 2 expert question submissions per month
- Private answer tracking
- Every library mechanism drawing unlocked
- Flashcards: Core Mechanisms revision deck
- Cancel any time
Monthly
Steady support through the term.
£8.99per month
- 8 private expert answers per month
- 8 expert question submissions per month
- Private hand-drawn answers
- Student Portal submission tracking
- Every library mechanism drawing unlocked
- Flashcards: Core Mechanisms revision deck
Semester Pass
Best value for a full organic course.
£34.99one-time · covers 4–5 months
- 10 private expert answers per month
- 10 expert question submissions per month
- Single one-off charge, no renewals
- Priority answer turnaround
- Every library mechanism drawing unlocked
- Flashcards: Core Mechanisms revision deck
No account is needed to read the full question library. Create one only to submit your own questions.
Written by organic chemists
Every answer is arrow-by-arrow, with stereochemistry and regiochemistry explained rather than asserted.
Submit your own problems
Photograph a problem set question and get a model mechanism written for it, within your monthly allowance.
Cancel whenever
Weekly and monthly plans renew until you cancel. The Semester Pass is a single charge that never renews.