Case Study


Professional maintenance for washing machine and dryer

Customer Relationship Management (CRM) System

About the Client

Washer & dryer repair service in Hong Kong

12 months+
Ying Fung Maintenance Engineering Limited
1 Team Lead, 2 Full-stack Developers

A seamless, intuitive app interface


Hassle free admin management

Technology Used

  • ASP.NET Core
  • C#
  • AngularJS
  • MS SQL
  • Firebase
  • Ionic Framework
  • MS Azure


YingFung is a maintenance application that makes finding proper resources a breeze for the user. A one-stop-shop for all things maintenance, workers can find contracts and the general public can easily engage contractors.

The owner of YingFung approached us with his idea for a comprehensive maintenance app. He had identified a huge opportunity in the market, but needed software specialists to execute. After thoroughly discussing objectives and aligning in vision, Synic Software developed YingFung from scratch. We then determined the project scope and developed a wireframe. Using an Agile framework, we were able to implement a design specific to their preferred aesthetic. Subsequently, we entered into testing.

YingFung Summary


Before the client came to us with their concerns. YingFung was doing everything manually. Physical records were kept, which frequently prompted rehashes of records. Inventory management was difficult. Things got chaotic when inventory expanded. The owner knew that innovation could not only help streamline operations, it could actually attract growth.


As YingFung is an international client, we had to work within different time zones and make sure communication was our top priority. There were a lot of changes throughout the development period, so it was important to be responsive and integrate these as efficiently as possible. Through our project management methodology, adjustments were innovative rather than regressive, and we were able to produce software that exceeded expectations.


The YingFung app includes the following features:

  • Orders & Payments
  • GPS Tracking
  • Scheduling
  • Order Management
  • Technician Response
  • Job Assignment
  • Internal Chat Interface
  • What’s App & SMS Integration


The client had expressed wanting flexibility and functionality in the app for future contemporization. We therefore suggested building a custom Customer Relationship Management (CRM) system. A seamless, intuitive app interface with hassle free admin management.

YingFung Solution


We opted for a design that is easy to use for everyone. Less is more. Having only the essential functions allows users and administrators to navigate the system with ease.


“We were impressed with the expertise, level of experience and transparency of Synic. Having bilingual developers on their team was a huge plus and part of our decision to work with them.” - Marco, YingFung’s Managing Director