Platform

One engine.
Every product runs on it.

JEEnify and NEETnify look like two companies’ work. They are one system with two syllabi bolted on — which is why a fix to the exam player, the analytics model or the delivery layer improves both the same week.

Content pipeline Exam engine Security

01 — Content

From a PDF to a tagged, solved, reviewed question

The hard part of an exam platform is not the app. It is turning decades of papers, textbooks and coaching material into structured items a machine can reason about and a student can trust.

Ingest — PDFs and scanned images, with direct text extraction and OCR fallback, plus embedded figure and diagram extraction
Structure — each item split into stem, options, answer, marking type, chapter, unit, topic tags and difficulty
Solve — step-by-step solutions drafted with frontier vision-capable models, including the figures the question depends on
De-duplicate — TF-IDF cosine similarity catches near-identical items before they reach the bank
Review — a human gate in the admin console; nothing publishes on the model’s say-so

Source paper in
A past paper, a practice sheet or a centre’s own PDF lands in the queue.
Extraction run
Text, figures and inline images are pulled out and each question is reconstructed as structured JSON.
Solutions drafted
Worked, stepwise solutions are generated against a fixed format standard and validated for shape.
Human review & publish
A reviewer approves or corrects, then the item goes live under the right subject and syllabus unit.

02 — Assessment

An exam engine that behaves like the real one

Students lose marks to an unfamiliar interface. We removed that variable by reproducing the portal rather than approximating it — the same palette states, the same navigation, the same unforgiving clock.

Four test modes — syllabus practice, self-paced series, previous-year papers and scheduled live mocks
Correct marking schemes per exam, including negative marking and numerical-answer tolerance
Live sittings at scale with countdown, auto-submit, resumable sessions and a published leaderboard
Shuffled ordering and per-student papers so answer-sharing stops being trivial
Export to PDF for centres that still run a paper exam hall

03 — Analytics

Measurement a student can act on

A total score tells a student almost nothing. What changes behaviour is knowing which chapter is bleeding marks, how long they are over-spending on it, and what the trend looks like against the exam that is coming.

Chapter accuracy

Per-chapter and per-unit correctness across every attempt, ranked worst-first.

Pace

Time-per-question against the budget the real paper allows, flagged where it exceeds it.

Percentile projection

Marks-vs-percentile mapping built from historical trends, applied to the student’s current score.

Readiness score

A single honest number combining coverage, accuracy, pace and recency — designed to be uncomfortable early.

04 — Multi-tenancy

Every coaching centre gets its own instance of everything

A centre is a first-class tenant, not a folder. It has its own URL, its own branding, its own admin console, its own members, its own papers and its own analytics — and no visibility into any other centre’s data.

Centre code and slug that students use to join, with an access-request flow the admin approves
Roles for centre admins, teachers and students, each with a scoped console
Private content — a centre’s own uploaded papers stay inside that centre
Shared question bank available to build from, without exposing anything a centre authored

What a centre actually gets

TENANT ISOLATION

yourcentre — students, papers, results, notices, materials
another-centre — entirely separate; no shared identifiers, no cross-reads
Skelro shared bank — readable by both, writable by neither

Centre-authored content never joins the shared bank unless the centre explicitly asks us to publish it.

05 — Delivery & scale

Built for a phone on a shared tower

Most of our students are not on office Wi-Fi. The platform is engineered around that constraint rather than apologising for it.

Installable PWA

Add to home screen on Android, iOS or desktop. Service-worker caching keeps the shell and the current paper available through a dropout.

Mobile-first performance

Aggressive payload budgets, image optimisation and web-vitals monitoring in production — measured on real devices, not a laptop.

Managed cloud infrastructure

Containerised services on managed cloud with a managed PostgreSQL primary, automated backups and health checks — sized to absorb a live-mock spike.

Layer	What we run	Why
Application	Next.js (App Router) with React and TypeScript in strict mode	Server rendering for crawlability and cold-start speed; one language across the stack
Content services	Python 3.13 extraction and solution pipeline	The document, OCR and ML tooling lives in Python
Model layer	Frontier vision-capable LLMs behind our own prompt and validation standard	Figures matter in Physics and Biology; a text-only model is not enough
Data	Managed PostgreSQL, single writer, automated backups	Attempts and results are financial-grade records; we treat them that way
Delivery	Containers on managed cloud, CDN-fronted static assets, PWA service worker	Predictable scaling through live-mock peaks

06 — Trust

Security, privacy and exam integrity

We hold minors’ data and we publish numbers students make decisions on. Both deserve more care than a marketing page usually admits.

Accounts

OAuth sign-in plus phone and email with OTP verification
Server-side sessions with active expiry monitoring
Scoped roles for students, centre admins and staff

Data

Encrypted in transit; access limited to the services that need it
Payments handled by regulated gateways — we never store card data
Automated backups with tested restores

Exam integrity

Per-student shuffled papers and server-authoritative timing
Solutions withheld until submission
Attempt audit trail behind every published score

Found something that looks wrong? Write to security@skelro.com. We read every report and we do not pursue researchers who disclose in good faith.

Want the same engine under your own brand?

Skelro Centers gives a coaching institute the whole platform — question bank, paper builder, exam engine and analytics — on its own URL.

For Institutions Request a demo

One engine.Every product runs on it.