
Multi-device Sync for Learning Progress
Objective
To build a learning platform that seamlessly synchronizes users’ progress—such as watched videos, completed modules, quiz scores, and notes—across multiple devices in real-time.
Key Features
Student Panel:
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Secure login with email/mobile or social auth (Google, etc.)
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Resume learning from where left off on any device
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View synced history: watched videos, completed lessons, quizzes
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Sync notes, bookmarks, and flashcards in real time
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Offline mode with automatic sync when reconnected
Instructor Panel:
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View learners’ progress across devices
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Push updates or materials that sync on all devices
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Track completion analytics in real time
Admin Panel:
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Monitor device sessions per user
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Track syncing errors or delays
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Manage data synchronization settings and logs
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Export user activity reports
Tech Stack
Layer | Technology |
---|---|
Frontend | React Native / Flutter (Mobile), React.js (Web) |
Backend | Node.js + Express / Django / Spring Boot |
Database | Firebase Realtime DB / MongoDB / PostgreSQL |
Authentication | Firebase Auth / JWT / OAuth 2.0 |
Sync Engine | Firebase Cloud Sync / Redis Pub/Sub / Socket.io |
Offline Storage | IndexedDB (Web) / SQLite (Mobile) |
Hosting | AWS / GCP / Firebase Hosting |
Workflow (Step-by-Step)
1. User Login
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Authenticated users can log in from any device
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Each device is registered under their profile
2. Learning Progress
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Progress (video timestamp, completed lessons, etc.) auto-saved
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Data saved locally and then synced to cloud
3. Multi-Device Sync
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When user logs into a second device:
‣ Pulls last known progress from cloud
‣ Loads synced bookmarks, notes, and flashcards
4. Real-Time & Background Sync
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Background sync engine ensures updates are near-instant
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Conflict resolution in case of simultaneous edits
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Offline changes are queued and synced when reconnected
5. Analytics & Monitoring
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Admin dashboard for device logs, sync success rates
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Usage analytics (per device/platform)