Sandy365 - Business Learning Audio App

Role: Full Stack Developer (Solo)

Background: A mobile-first platform that helps users learn languages through curated audio-transcript learning units.

Challenge: Build a dynamic learning flow that supports two languages, real-time progress tracking, and challenge-based motivation.

Developed collections of “Learning Units” with dual-language support (English/German).

Integrated audio playback with synchronized transcripts.

Implemented persistent progress tracking across sessions.

Designed logic to auto-reset progress when switching units.

Introduced streak-based challenges and progress goals to boost engagement.

Added automatic collection completion detection.

Technologies: FlutterFlow, Firebase (Auth, Firestore, Storage), Dart Custom Code, Audio Playback Integration.

Your Role: Handled complete design and development—from schema planning to UI/UX, coding, and deployment on Android and iOS.

Outcome: A smooth, immersive language-learning experience that keeps users engaged through progress mechanics and smart content delivery.