StudyPRN has been the default SCE question bank for over a decade. iatroX is the newer platform challenging it with adaptive learning, bundled pricing, and a modern mobile experience. This is a direct comparison across the dimensions that actually matter for your SCE preparation.
Question count and coverage
StudyPRN covers all thirteen SCE specialties. Question counts range from approximately 450 (Geriatric Medicine) to 890 (Endocrinology), with most specialties sitting between 500 and 800 questions. Questions are written by named UK consultants and reviewed by specialist editorial boards.
iatroX covers all thirteen SCE specialties with 1,500 or more questions per specialty. Questions are generated using an AI-assisted pipeline with clinical verification against primary UK and European guidelines — NICE, ESC, BTS, BSR, BHIVA, KDIGO, EASL, and the relevant JRCPTB curriculum. Each question includes a detailed explanation with explicit guideline referencing and disposal of every incorrect option.
On raw question count, iatroX offers roughly twice the volume per specialty. Whether that translates to better preparation depends on question quality, which is harder to compare objectively. StudyPRN's named-author approach carries credibility. iatroX's guideline-first approach ensures currency with the latest recommendations. Both produce exam-grade content — the format and difficulty level are comparable.
Adaptive learning
StudyPRN delivers questions in sequential or random order. There is no adaptive algorithm. If you answer ten cardiology questions correctly and struggle with three electrophysiology questions, the platform does not adjust. You manage your own revision priorities manually.
iatroX uses an adaptive algorithm that tracks your performance at the individual topic level and adjusts question selection in real time. Topics where you perform poorly are weighted more heavily in subsequent sessions. A spaced repetition layer schedules review of previously answered questions at intervals designed to maximise long-term retention. This is the single largest functional difference between the two platforms.
For a time-pressed registrar juggling clinical commitments with exam preparation, adaptive learning is not a luxury — it is the difference between spending revision time efficiently and spending it on topics you have already mastered.
Pricing
StudyPRN charges per specialty with time-limited access. A three-month Respiratory subscription costs around £199. A three-month Geriatric Medicine subscription costs around £79. There is no bundle pricing and no cross-specialty access. If you want two specialties, you pay twice.
iatroX charges a single subscription that covers every exam on the platform — all thirteen SCEs, plus MRCP, MRCPCH, MRCPsych, FRCA, MRCGP, PLAB, and international exams. That subscription costs £29 per month or £99 per year.
To put this in concrete terms: a registrar preparing for the SCE Respiratory exam would pay approximately £199 for three months on StudyPRN, or £87 for the same three months on iatroX (which also includes access to every other exam bank on the platform). For the annual plan, the comparison is even more stark — £99 per year on iatroX versus £199 for a single three-month specialty block on StudyPRN.
Mobile experience
StudyPRN is a responsive website. It works on mobile browsers but is not a native app. There is no offline access. The interface is functional but reflects a design language from an earlier era of web development.
iatroX has native iOS and Android apps with offline question caching and progress syncing across devices. The quiz interface is optimised for mobile with touch-friendly option cards, keyboard shortcuts on desktop, and haptic feedback on iOS. You can revise during a commute, between clinics, or on a night shift without needing a laptop.
Performance analytics
StudyPRN shows your overall percentage correct and basic progress metrics. Topic-level analysis is limited.
iatroX provides a performance dashboard with topic-level heatmaps showing your accuracy and question coverage across every curriculum domain. You can see exactly which topics are strong, which are weak, and which have not been covered at all. This data drives the adaptive algorithm but is also visible to you — making it straightforward to plan targeted guideline reading for your weakest areas.
Mock exams
StudyPRN offers timed mock exams for some specialties.
iatroX offers full mock exams for every SCE specialty, simulating the real format — two papers of 100 questions, each timed at three hours. Performance is broken down by topic, difficulty, and time per question. You can sit half-length mocks if time is limited.
The honest assessment
StudyPRN is a proven product with a decade of track record and named consultant authors. If you have used it before and trust it, it will not let you down — the content is solid and the pass rates among its users are respectable.
iatroX is the better product on almost every functional dimension — adaptive learning, question volume, pricing, mobile experience, and analytics. The trade-off is that it is newer and does not carry the same institutional familiarity.
For most registrars preparing for an SCE in 2026, iatroX offers significantly more value for significantly less money. The adaptive algorithm alone justifies the switch — structured, data-driven revision is measurably more effective than working through a static bank in random order.