The most useful MRCPCH FOP and TAS resource is the one that addresses your remaining preparation problem. Official material establishes the assessment; a question bank provides repeated application; a scientific explanation repairs a prerequisite gap. Buying several banks without identifying that gap can leave less time to review the questions already attempted.
This comparison is published by iatroX and includes iatroX among the options. It is based on public product information checked on 3 October 2026, not a head-to-head accuracy study. The RCPCH timetable lists the autumn FOP and TAS papers on 14 October 2026, making resource restraint especially relevant to booked candidates.
Give FOP and TAS separate preparation goals
The RCPCH structure and syllabi page, updated in August 2026 and checked on 3 October, describes FOP as assessing clinical knowledge, understanding and decisions, and TAS as assessing the scientific principles underpinning practice. Each currently contains 100 single best answer questions over two hours.
Those distinctions should influence your review. A FOP error may require comparing clinical alternatives in context. A TAS error may reveal that a physiological or pharmacological relationship is not understood. Neither paper should be reduced to a caricature of pure experience or pure memorisation.
The College also states that the theory examinations can be taken in any order. Check current official requirements rather than inheriting an inaccurate sequence from a commercial FAQ or an older revision guide.
Official materials: the anchor for scope and format
Start with the RCPCH theory examination resources. Use the syllabus, official preparation routes and examples to establish the task before evaluating a provider's claims.
Official material has a different role from a large commercial bank. It can calibrate expectations without necessarily providing the same volume of practice or a personalised review system. A candidate should not interpret that difference as a reason to skip it.
Check the date of any mock or book. Older material may still explain useful science while using an outdated question format. Preserve its explanatory value where appropriate, but do not use an inherited timer or item type as the specification for October 2026.
Pastest: combined or separate preparation with explanatory support
The Pastest FOP and TAS product, checked on 3 October 2026, advertises a combined question bank, searchable textbook, analytics, Tutor mode and Ask Pastest. It also offers separate FOP and TAS products. Its described past papers are constructed using customer feedback about examination themes, not presented here as official released RCPCH papers.
The combined page displayed £119.98 for three months, £199.98 for six months and £239.98 for twelve months, with a 48-hour free option. Those are the published combined-product prices on the review date; the separate FOP product displayed £59.99 for three months. Confirm the exact selection and checkout terms rather than comparing a single-paper price with a two-paper bundle.
Pastest may suit someone who wants question practice and a substantial explanatory resource together. Its AI support also means guided help is not unique to iatroX. A last-fortnight candidate already using it effectively may gain more from targeted review than from changing platforms.
BMJ OnExamination: question selection and mobile review
The BMJ FOP and TAS page, checked on 3 October 2026, advertised 1,722 questions, difficulty selection, review of difficult items, mock tests, group learning and an app with offline access. Those are published features, not evidence that its score predicts an individual examination result.
This is a relevant option for candidates who value a familiar question-review workflow or need learning access during periods without a dependable connection. Test that the available explanations resolve the type of uncertainty you actually have, especially when the problem is an underlying scientific concept.
A current payable FOP/TAS price was not exposed in the public product text reviewed. Check the duration selector and checkout rather than relying on an old price quoted elsewhere. The absence of a verified figure here should not be interpreted as a claim that BMJ is more or less expensive than another option.
iatroX: a connected attempt, explanation and return workflow
According to iatroX's October 2026 product information, the platform lists separate FOP and TAS question-bank coverage with adaptive sequencing, spaced repetition and a Socratic Tutor linked to an attempted question. Its planner uses the examination date, available daily time and quiz performance to organise revision. See the exam catalogue.
A useful session begins with an independent attempt. The learner then explains the mistaken reasoning, explores the missing distinction and returns later to related material. The attraction is a structured learning sequence rather than a claim that one more question library is always needed.
Ask-iatroX and free question access are free without trial expiry or a verification gate. The October 2026 subscription price is £99 paid upfront annually, equivalent to £8.25 per month billed annually, or £29 monthly. Full banks, ongoing Socratic Tutor, planner, simulations and CPD tools are included together. Simulations and CPD are not separate add-ons, but their inclusion does not mean every feature is relevant to FOP or TAS.
Test an explanation before paying for more volume
A fictional candidate, Grace, can select an answer after recognising a remembered phrase but cannot explain the scientific relationship. Her comparison task is to choose a small sample of difficult concepts and assess whether each resource helps her reconstruct the reasoning without the explanation open.
She checks the source basis, clarity, important qualifications and whether she can apply the idea to a different item. For usability, she tests the route back to an uncertain question and the effort required to organise a later review. This is a proposed personal evaluation, not a claim that those tests have been run on the products here.
Do not compare library counts as though every question has equivalent difficulty, explanation depth or relevance. Nor should an overall provider user count be treated as the number of current FOP or TAS candidates. The decision should follow the task you need the resource to perform.
Choose by candidate scenario
For someone uncertain about format or scope, official RCPCH material comes first. For a candidate wanting a combined bank and textbook-style explanation, Pastest is a relevant option, with separate products worth considering when only one paper is being taken. For someone prioritising established question review and offline mobile access, BMJ's published workflow deserves examination.
For a learner who wants question-linked reasoning and planned returns in one environment, iatroX is a relevant choice. For a candidate already progressing with one bank and appropriate references, keeping that setup may be preferable to buying any new subscription. In the final fortnight, the strongest purchase decision may be to spend the available time reviewing rather than shopping.
Frequently asked questions
Do I need separate resources for FOP and TAS?
You need separate learning goals, but not necessarily separate subscriptions. Check whether the chosen product covers the paper or papers you are actually sitting.
Are commercial past papers official RCPCH examination papers?
Do not assume so: inspect how the provider describes their construction. Official College resources and commercially produced mocks have different provenance.
Is adding a second bank useful in the final fortnight?
Only when it resolves a defined gap such as insufficient unfamiliar practice or an explanation you cannot obtain elsewhere. More volume can otherwise displace needed review.