Overview
Built and shipped a cross-platform exam prep app for HVAC technicians studying for the EPA Section 608 certification. The app supports focused study, adaptive practice, mock exams, reminders, and offline access so users can prepare anywhere without losing progress.
Key Features
- Four study sections covering Core, Type I, Type II, and Type III certification content
- Multiple learning modes including cram, study, smart practice, mock exam, bookmarks, and most missed
- Adaptive question weighting that pushes users toward weaker material until questions are mastered
- Per-section readiness scores, saved progress, result history, and mastery tracking
- Daily or weekly reminder notifications to keep study habits consistent
- Offline-first question access with bundled content and cached updates
- Over-the-air question updates from Supabase without forcing a full app release
Technical Highlights
- Flutter single-codebase architecture for iOS and Android deployment
- Provider-based state management for quiz flow, bookmarks, and progress data
- SharedPreferences and local file caching for offline resilience
- Supabase-backed sync/versioning model for question updates
- Reusable widget structure for question cards, navigation, and review flows
- Production app distribution through public app stores and a companion marketing site