Mapping Medical Exams Into an Interactive Knowledge Graph
How Metro Tech engineered Hippo Prep for medical educators, transforming hundreds of disorganized PDF past papers into an intelligent learning graph used by paying postgraduate doctors.
The Problem: Chaos in Medical Preparation
Postgraduate medical aspirants preparing for the rigorous National Board (DNB) Anaesthesia final exam traditionally rely on disjointed folders of past question PDFs. Doctors working 12-hour hospital shifts lacked any structured way to know which topics were frequently tested, how concepts linked across years, or what their personal study coverage was.
The requirement was clear: build a focused, calm study workspace designed for long reading sessions on mobile screens, free from clutter and social distractions.
The Metro Tech Architecture
Metro Tech engineered Hippo Prep from the ground up to replace static PDF reading with a dynamic, concept-oriented learning graph:
- 4-Level Concept Graph: 226 previous-year questions (2015 to present) clustered concept-wise. Candidates immediately see high-yield exam topics vs rare one-offs.
- Active Recall Workspace: Every question features model answers, clinical discussion points, and a cloud-synced personal notes editor.
- Cloud Progress Engine: Topics automatically update mastery states as doctors mark questions revised, syncing in real time across mobile and desktop.
- Frictionless Monetization: Integrated Google OAuth sign-in and Razorpay checkout, allowing candidates to unlock full access in under 30 seconds.
Key Production Metrics
“Prepare with clarity, not a bunch of PDFs. The learning graph lets doctors focus on high-yield questions without wasting hours sorting files.”