Cadexa: a study app for NCC cadets

The problem

NCC cadets prepare for their certificate exams from printed précis and scattered question lists. There was no simple way to practise by subject, see weak areas or sit a timed mock test on a phone.

What we built

• Lessons and question banks for all four wings: Army, Navy, Air Force, and Remount and Veterinary
• Chapter tests, subject papers and full mock papers with worked solutions
• Progress analysis so cadets can see and fix their weak areas
• Plans priced by wing and certificate, sold as in-app purchases through Google Play Billing
• The product website, cadexaindia.com, with features, pricing, FAQs and the app’s terms, privacy and refund policies

How it runs

One Expo and React Native codebase talks to a FastAPI server that holds the question bank and the plan catalogue, so questions and prices can be updated without a new app release.