Charaka NEET-UG

Charaka is a free NEET-UG prep app built in India, named after the ancient physician whose treatises shaped Indian medicine. It's designed for one thing: deliberate, distraction-free practice for the Physics, Chemistry, Botany, and Zoology aspirants take on every year.

No signup. No account. No email. Nothing about you ever leaves your iPhone.

WHAT'S INSIDE

- 960+ practice questions across all four NEET subjects, mapped to NCERT chapters and tagged by concept and difficulty.
- A custom "PYQ-style" library — past-year-pattern variants for NEET 2019 to 2024, marked clearly so you know when you're rehearsing exam-style stems vs original Saras-authored questions.
- Hint ladders on every question — four progressively bigger nudges before the full explanation, so you're forced to think before you reveal.
- Concept-mastery tracking via Bayesian Knowledge Tracing — your dashboard shows what you've actually internalised, not just what you've attempted.
- Mock tests in three flavours: Full NEET (180 questions, NTA timing), Subject (45 questions), and Chapter or fully Custom paper sets with locked timing, locked difficulty filters, and ad-free runtime.
- Previous-year paper mode — attempt entire NEET pattern papers from a chosen year.
- Notes with inline LaTeX, Apple Pencil sketches, and a personal PDF library for the textbooks and class notes you already use.
- An AI tutor for hints, explanations, and Socratic doubt-solving — powered entirely by Apple Intelligence on your device.

ON-DEVICE AI, FOR REAL

The AI tutor uses Apple's Foundation Models framework, which runs inside iOS itself on Apple Intelligence–eligible iPhones (iOS 26+). Your prompts and the model's responses never leave your phone. We have no server. We have no logs. We could not retrieve your AI conversation if you paid us to.

PRIVACY YOU CAN AUDIT

- No account creation, sign-in, email, or phone number — ever.
- No analytics SDKs. No crash reporters operated by us. No A/B testing. No remote logging.
- No camera, microphone, location, contacts, or App Tracking Transparency prompt.
- All your attempts, notes, sketches, imported PDFs, and mock-test results are stored only on your device via Apple's SwiftData framework.
- Ads are served by Google AdMob configured with the most restrictive privacy posture available: under-age-of-consent treatment globally, no IDFA, no personalisation, G-