Remy

Inspiration

Remy was born from a simple frustration: reminders and to-dos should just work — silently, reliably, and across all your devices.

We wanted to build a productivity app that feels invisible but powerful — syncing seamlessly without requiring users to constantly open the app or manually refresh.

What it does

Remy is a cross-platform to-do and reminder app that keeps your tasks perfectly in sync across devices.

• Silent background synchronization
  
• Real-time updates across devices
  
• Offline task and reminder creation
  
• Automatic sync when internet connection returns
  
• Clean, distraction-free experience
  

Even if the app isn’t in the foreground, your data stays up to date.

How we built it

We focused on reliability, efficiency, and scalability from the beginning.

• Background tasks to refresh and sync data when the app is not active
  
• Silent push notifications to trigger updates without interrupting the user
  
• Supabase for authentication, database, and backend services
  
• Webhook batching system to prevent overloading silent push capabilities
  
• Optimized sync logic to minimize unnecessary network calls
  

Challenges we ran into

• Refreshing data while the app is not in the foreground
  
• Handling FCM limitations and inconsistencies with silent push delivery
  
• Ensuring reliable background execution under system constraints
  
• Avoiding notification throttling while maintaining near real-time sync
  

Accomplishments that we're proud of

• Full support for both iPhone and iPad
  
• Seamless background synchronization
  
• Creating reminders and to-dos without internet access
  
• Automatic synchronization once connection is restored
  
• Efficient system design without excessive battery usage
  

What we learned

• Deep integration with Supabase and backend architecture
  
• Backend development for notifications and background tasks
  
• Managing push notification systems at scale
  
• Designing resilient sync logic for real-world network conditions
  

What's next for Remy

• Launching an Android version with the same silent background sync capabilities
  
• Cross-platform real-time sync between iOS and Android
  
• Shared lists and collaborative reminders
  
• Smart, contextual reminders
  
• Further performance and battery optimizations
  

Remy’s mission is simple: make task management effortless, automatic, and invisible.

Built With

• backgroundtasks
• fcm
• firebase
• silentpushes
• supabase
• swift
• swiftui