YouMi

Project Overview

YouMi is an online psychological counseling platform that connects users with certified psychologists through a mobile application. The service offers flexible session scheduling, real-time chat functionality, and seamless specialist selection to make mental health support more accessible and convenient.

When YouMi approached us, their Flutter application was experiencing critical technical issues that significantly impacted user experience. Users reported frequent disconnections during sessions, chat messages failing to deliver, and navigation problems that made the app frustrating to use. These issues were damaging user trust and preventing the platform from scaling effectively.

Specialist Selection Screen

Session Scheduling

Session Features

User Profile

Preferences

Notification Settings

Technical Challenges

Our analysis revealed two critical problems at the core of the application's instability:

WebSocket Connection Management: The real-time chat and session features relied on WebSocket connections that were improperly handled. Connections would drop without proper reconnection logic, messages were lost during network transitions, and the app struggled to maintain stable communication between users and psychologists. This made the chat unreliable and created significant friction during active counseling sessions. We also implemented a comprehensive message state tracking system that provides real-time feedback on message delivery status. Users and psychologists can now see when messages are sent, delivered, and read, creating transparency and improving communication flow during sessions. This feature enhanced user confidence in the platform's reliability and helped both parties understand message receipt confirmation.

Navigation Architecture: The application's routing system was poorly implemented, causing memory leaks, inconsistent state management, and unpredictable navigation behavior. Users experienced crashes when moving between screens, back button malfunctions, and screens that would freeze or display incorrect content.

Solution & Implementation

Working within a tight two-week timeframe, we systematically addressed both core issues:

We completely refactored the WebSocket implementation, introducing robust connection lifecycle management with automatic reconnection, message queuing during network interruptions, and proper error handling. The new architecture ensured that chat messages were reliably delivered and sessions remained stable even during network transitions or temporary connectivity issues.

The navigation system was rebuilt from the ground up using Flutter's modern routing best practices. We implemented proper state management, cleaned up memory leaks, and created a predictable navigation flow that aligned with user expectations. The result was a smooth, responsive interface that behaved consistently across all user scenarios.

Results

Within two weeks, YouMi's application was transformed from an unstable product into a reliable platform. Chat functionality became dependable, session connectivity improved dramatically, and navigation issues were completely eliminated. The fixes allowed YouMi to confidently scale their user base and focus on growing their business rather than managing technical crises.