Calen 360 – Smart Calendar & Scheduling Mobile App
Smart Calendar & Scheduling
Project Overview
Calendar app with Google/Microsoft integration, customizable views, and smart event planning for individuals and teams.
“Calen 360 unified our scheduling and improved productivity across the team. The Google/Microsoft sync is seamless!”
Industry
Productivity
Timeline
5 months
Technology
Flutter, Firebase, Google Calendar API, Microsoft Graph API, Provider, Firestore, OAuth 2.0
Platform
iOS & Android
Key Highlights
- •Seamless two-way sync with Google and Microsoft calendars
- •Smart conflict detection and resolution for overlapping events
- •Intuitive drag-and-drop event scheduling
- •Team and resource availability visualization
- •Offline access with automatic sync on reconnection
The Challenge
Building a unified calendar platform that integrates deeply with both Google and Microsoft APIs, while providing a fast, mobile-first experience and handling complex scheduling scenarios for individuals and teams.
Our Approach
Architected a modular Flutter application with robust state management, implemented secure OAuth 2.0 authentication for third-party calendar services, and designed a responsive UI for quick event creation and navigation. Developed custom logic for conflict detection, batch event updates, and background sync to ensure reliability and usability.
The Results
Improved productivity and scheduling for individuals and teams.
Technical Highlights
- Deep integration with Google Calendar and Microsoft Graph APIs (OAuth 2.0)
- Local data caching for offline use and background sync
- Custom event recurrence and reminder logic
- Drag-and-drop scheduling and smart suggestions
- Accessibility support (screen reader, high contrast, localization)
- Modular Provider-based state management