JharTest – Mobile Learning & CBT Exam App
Designed & Built for JharTest EdTech / In-House Product
Cross-platform Android & iOS exam preparation mobile app featuring authentic CBT test engine, instant ranking leaderboards, offline exam persistence, and seamless in-app updates.
“JharTest Mobile App is a dedicated student-facing Android application engineered with React Native and Expo. Built specifically for competitive exam aspirants (JSSC, JPSC, and state recruitment exams), the app delivers a fluid, distraction-free environment for practicing full-length mock tests, sectional quizzes, and past-year question banks. Key mobile capabilities include a full-screen interactive CBT interface with timers and question status palettes, custom in-app APK update delivery with direct download progress, local state persistence to protect against network drops, and native payment integration for instant test series activation. ”
1. Mobile Exam Integrity & Crash Prevention: Preventing data loss or timer resets when students minimize the app, receive incoming calls, or experience sudden network drops during live tests. 2. Smooth In-App Updates for Direct APK Users: Ensuring users who install APKs outside the Play Store receive instant, one-click update popups with direct background downloading. 3. Complex Mathematical & Bilingual Rendering: Formatting complex math equations, Hindi/English bilingual question toggle, and diagram questions on screens of varying aspect ratios without UI distortion.
1. Resilient Offline Exam Session Engine: Implemented local state storage and background synchronization using React Context and Async Storage to ensure zero test progress loss. 2. Custom GitHub/CDN In-App Updater: Built an automated update check service (`updateService.ts`) with SemVer comparison, download progress tracking, and direct intent installer triggers. 3. High-Performance Mobile UI: Created responsive UI components with micro-animations, tactile haptic feedback, dark/light contrast modes, and quick-navigation question palettes. 4. Seamless Mobile Checkout: Integrated native payment popups with instant order verification, auto-unlocking test folders without requiring app reloads.
