Medibuddy is an adaptive, affordable Q-bank that can carry a great deal of MRCP Part 1 practice — but its Topic Mastery scores and dashboard percentages measure how you are performing inside the app, not whether you are ready for the exam, and an adaptive feed makes that gap wider than a static bank does. This audit is for candidates already using or considering Medibuddy who want to read its analytics honestly. The principal limitation: an algorithm that personalises your questions also personalises your statistics, so the numbers describe the feed you were given rather than the exam you will sit.
What Medibuddy offers for MRCP Part 1 right now
Medibuddy sells adaptive, low-cost fixed-term access built around an AI engine that calculates a Topic Mastery Level per subject, re-tests previously incorrect items through spaced repetition, and offers both an adaptive mode (algorithm-driven selection) and a traditional mode (manual filtering). Its published MSRA product runs from £30 for one month to £60 for twelve, and the MRCP Part 1 offering follows the same adaptive, tiered pattern; verify the current MRCP-specific question count and price on the product page before purchase, as we could not confirm an MRCP-specific figure on the audit date. Two honest framings before the audit: the adaptive engine is a genuine feature, not marketing gloss, and at this price the value is real. Nothing here argues against buying it — only against misreading what it tells you.
The exam the numbers must answer to
MRCP(UK) Part 1 is two three-hour papers, 100 best-of-five questions each, no negative marking. The Federation publishes the per-paper specialty distribution and it should anchor every revision decision: clinical sciences 25, clinical pharmacology and therapeutics 15, then cardiology, infectious diseases, neurology, renal, respiratory, rheumatology, gastroenterology and endocrinology at 14 each, haematology 10, psychiatry 9, dermatology and geriatric medicine 8 each, oncology 5, medical ophthalmology 4 and palliative medicine 4. Clinical sciences plus pharmacology are nearly a fifth of the paper, and the small domains still contribute marks candidates fail margins smaller than.
What each dashboard metric actually measures
First-attempt accuracy on unseen items is the only number that behaves like the exam, because the exam is entirely first attempts. Topic Mastery Level is Medibuddy's headline construct, and it is worth understanding precisely: it is a modelled estimate of your competence in a subject based on your performance on the items the algorithm chose to show you — useful as a relative signal of where you are weak, but not a pass probability and not comparable across candidates whose feeds differed. Repeat accuracy (which the spaced-repetition system inflates by design) measures recognition of previously seen items, not durable knowledge. Coverage counts attempts, an input rather than an outcome. Difficulty and time-per-item are diagnostic gold read per domain: accurate-but-slow is a different problem from fast-but-wrong.
The property no adaptive bank can show you is transfer — whether you can answer an unseen question on the same concept phrased differently. That is exactly what the exam tests, and it is best measured by a separate, unseen question source outside Medibuddy's feed.
Adaptive selection bias: why your Mastery scores flatter or frighten you
Every adaptive engine biases its own statistics, and in two directions at once. When the algorithm concentrates on your weak areas — which is its job — your recent accuracy deflates, and a candidate who reads that as "I'm getting worse" is misreading a feature as a failure. When you switch to traditional mode and drill comfortable domains, accuracy inflates just as misleadingly. And the spaced-repetition re-tests raise your repeat accuracy while telling you little about first-attempt performance on novel material. The general rule holds with extra force for adaptive banks: any percentage produced under conditions the algorithm chose is not comparable with a mixed, unseen, timed block, and only the latter resembles the exam. This is the core argument of Your Q-Bank Percentage Is Not Your Exam Score, and an adaptive feed is precisely where it bites hardest.
Audit your distribution against the blueprint
Once a fortnight, pull your per-specialty attempted counts and Topic Mastery levels and set them against the official distribution above. The adaptive engine optimises for your improvement curve, not for the exam's weighting, so it can legitimately leave you well-drilled in the domains it decided to focus on and under-exposed in others — including the clinical sciences and pharmacology block that is nearly 20% of the paper. Read Mastery levels as a to-do list (lowest first), but read attempted-question distribution against the blueprint, because a high average Mastery over an uneven spread is not readiness.
What a credible readiness signal requires
Five conditions, all of them: unseen questions, timed at exam pace (roughly 1.8 minutes per item), mixed across specialties in blueprint-like proportions, no mid-block assistance, and a sample large enough to mean something — judge on 100+ questions across multiple sittings, not a single 30-question block whose confidence interval swallows a grade boundary. Medibuddy's traditional mode, run as timed mixed blocks, comes closest to this inside the product; its adaptive feed, by design, does not, because it is selecting to teach rather than to measure.
When to override the algorithm
Adaptive engines are optimised for engagement and improvement, which is not the same as blueprint coverage. Override by forcing timed mixed blocks in traditional mode weekly, regardless of what the feed wants to serve; forcing clinical sciences and pharmacology on a rota; forcing the micro-domains (ophthalmology, palliative medicine, oncology) that any adaptive feed under-samples because they generate few items; and forcing full-pace random blocks precisely because they ignore your Mastery profile. The algorithm is a good teacher and an unreliable examiner — use it for the first job and take the second one back.
A worked dashboard example
Suppose after four weeks Medibuddy shows: overall accuracy 69%; Topic Mastery high in cardiology and gastroenterology, low in clinical sciences and endocrinology; the adaptive feed currently 60% weighted to your three weakest topics; average 2.3 minutes per item in neurology at 70% accuracy. Read naively, "69% and improving" sounds reassuring. Read properly: the low clinical-sciences Mastery over a thin attempted sample is a live liability on a fifth of the exam and takes next week's largest quota; the high cardiology Mastery can be maintained with one small block; the deflated recent accuracy is the adaptive feed doing its job on your weak areas, not a decline; and neurology's problem is pace, not knowledge, so it gets timed blocks specifically. Next week's plan is quotas, not a pass prediction — and no Topic Mastery number was mistaken for one.
A seven-day pattern for busy trainees
Monday: 40 Medibuddy questions in adaptive mode, letting the engine target your weak topics, explanations read. Tuesday: 30 more plus a spaced-repetition review of earlier errors. Wednesday: a timed, unseen 50-question mixed block in iatroX's free MRCP Part 1 bank — unseen items, adaptive selection that probes related weaknesses across topic boundaries, and a first-attempt signal Medibuddy's own repeats cannot give you. Thursday: rest or 20 light questions. Friday: 40 Medibuddy questions in traditional mode, forced into blueprint domains your audit flagged, timed. Saturday: a timed mixed block, reviewed the same day by error type. Sunday: spaced review of the week's errors only. Medibuddy does adaptive drilling and explanations; iatroX does unseen transfer measurement; neither is asked to do the other's job, and nothing here requires access to anyone's proprietary algorithm.
Topic Mastery is a compass, not a finish line
The most important habit with an adaptive bank is to keep Topic Mastery in its proper role. It is a compass — it points at where to spend effort next — and it is emphatically not a finish line, because a subject can turn green on the strength of the specific items the algorithm chose to show you while the exam samples the same subject in ways you never met. Two candidates can reach identical Mastery profiles from completely different question sets, which is why Mastery is not comparable between people and not a pass probability for either.
The practical test is to periodically decouple the compass from the map. Take a subject Medibuddy rates as high Mastery and, in traditional mode, pull a fresh unseen block of that subject at exam pace. If your first-attempt accuracy on the cold block matches the Mastery rating, the compass was honest. If it drops sharply, the Mastery was inflated by the adaptive feed's particular selection, and the subject is not as secure as the dashboard claimed. Do this a handful of times across your strong and weak subjects and you calibrate the whole dashboard: you learn how much to trust its greens, which is worth more than any single number it shows you. It is the same logic that makes an unseen source such as iatroX the honest counterweight to any adaptive engine — the engine teaches, the cold block measures, and the gap between them is the thing you actually need to know.
Continue, supplement, switch or stop
Continue while unseen mixed performance is rising and your blueprint audit is roughly level. Supplement (with unseen mixed blocks and transfer practice) if Medibuddy's numbers rise while unseen performance stalls — that is the adaptive engine teaching recognition, not transfer. Switch only for a measurable gap: a domain the feed covers thinly for you, or analytics you cannot get; novelty is not a reason and sunk cost is not a reason to stay. Stop question-grinding and move to mock conditions in the final fortnight when coverage is complete, first-attempt accuracy is stable and pacing is on target — completion of a bank, or a full row of green Mastery bars, is not an exit criterion.
Frequently asked questions
Is Medibuddy enough for MRCP Part 1 on its own? Its adaptive engine and volume can carry much of the practice load affordably, but it cannot provide the one measurement that predicts the exam — performance on unseen, mixed, timed material — so add independent mock-condition practice and treat Topic Mastery as a study-priority signal rather than a readiness verdict.
Which MRCP Part 1 component does Medibuddy not reproduce well? The exam's fixed blueprint weighting under unseen timed conditions: an adaptive feed optimises for your improvement curve, not the exam's distribution, so it systematically under-rehearses whichever domains it decides you need less of — often the drier clinical-sciences and pharmacology block that carries the most marks.
How many Medibuddy questions should I complete per day for MRCP Part 1? Composition matters more than volume, but 40–60 on weekday study days and 80–100 on a weekend day is sustainable alongside clinical work; distribute by your blueprint audit rather than by whatever the adaptive feed prefers, and protect two timed mixed blocks per week.
When should I stop using Medibuddy and move to mixed mocks? When every blueprint domain is attempted above your coverage floor, first-attempt accuracy is stable across two weeks, and pacing sits at or under 1.8 minutes per item — shift the balance to timed mocks and unseen blocks, usually the final three to four weeks.
How should I combine Medibuddy with iatroX without duplicating practice? Give each a non-overlapping job: Medibuddy for adaptive domain drilling and its spaced-repetition review; iatroX for unseen timed blocks, transfer measurement and adaptive selection that surfaces related weaknesses you did not choose — so your readiness signal always comes from questions neither you nor the algorithm selected.
Editorial notes and references
Written by Dr Kolawole Tytler, NHS GP and founder of iatroX. Last checked 19 July 2026; Medibuddy figures are vendor-published (MSRA pricing £30–£60 confirmed; MRCP-specific counts to be verified on the product page). Disclosure: iatroX operates a free competing MRCP Part 1 bank, so this audit names Medibuddy's strengths plainly and confines the iatroX role to jobs the audited product does not claim to do. Corrections via the feedback route on iatrox.com. References: MRCP(UK) Part 1 format and blueprint (thefederation.uk/examinations/part-1/format); Medibuddy product pages (medibuddy.co.uk); related reading: the best MRCP Part 1 banks and why your Q-bank percentage is not your exam score.