Web application for a Time and Billing Tool


Mango Billing, Inc


Billing Software



Work Duration

8 Months


Angular, Bootstrap, NodeJS

Team Size

2 Angular developer, 1 backend developer,1 DevOps, 1 QA


Upgrade the existing desktop app into a web app following and reduce compatibility issues.

Development based on new rules, laws, and compliance.

Robust and scalable solution

As the web became the leading platform for using applications, companies began encountering challenges expected in the shift from desktop to web. Furthermore, the distribution model for the client's software was negatively impacting sales, and the installation process was causing compatibility issues as more people switched to macOS, Linux, and other operating systems.

Key features

  • Generate professional invoices 
  • Embedded time tracking tool
  • Recursive Payment
  • Appointment management for the teams
  • Create reports
  • Dashboard

Client Requirements

The customer wanted to provide seamless time and billing software for Accountants, Lawyers, Consultants, Contractors, Freelancers, and other businesses over the web. Their passion for creating practice management solutions started in 1994. They have a basic Desktop application, which debuted in 2000.

Their current desktop app lacked many core features, so they wanted to upgrade it to a web app with advanced features.

Process We Followed to Develop the Web App

We thoroughly discussed the features and changes with the client to upgrade their desktop app to a web app. After much discussion, we concluded to go ahead with the cloud-based web application as the best solution.

We started with developing a user-friendly, easy-to-maintain, and scalable architecture for upgrading the existing app to a web app. Then we followed by adding new features to the app



With a detailed discussion with the client team, we designed the basic wireframe for the cloud web app. As the app required few advanced features, we defined a development pipeline with key milestones, making it easy for the client to track progress.



We focused on creating an easy-to-navigate and intuitive interface for the app. We defined the app architecture and moved to the development part. Along with the already existing features, we upgraded the app features focusing on creating a scalable solution for future updates.



We believe in delivering excellence. We conducted meticulous testing with the client team to ensure a bug-free launch. We followed a comprehensive testing approach, ensuring that the solutions we deliver are of the highest quality.



We followed a streamlined app deployment after developing and thoroughly testing each app feature. Our deployment process involved everything from app launch to training the client team for the technicalities of app.


As the digital landscape revolutionizes, desktop apps are taking a back seat. With the proper consideration and thorough market research, we developed a cloud-based web app, and it resulted in excellent outcomes for our client:

  • A sharp increase in their sale by 150% in the next year of launch.
  • Old customer retention increased by 80%.
  • Easy to maintain cloud base application.
  • Subscription cost got reduced by 50%.
  • A frequent functionality add-on is now possible and available to all existing users.
Tech Stack

Project Duration

4 weeks


24 weeks


1 weeks

DevOps for testing load balancing

8 weeks


1 weeks


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Frequently Asked Questions

What were the key milestones during development?
After discussing the features and changes, we designed a basic wireframe for the web app. Then we defined a development pipeline with key milestones, enabling the client to track progress effectively. This approach ensured that the development process remained organized and aligned with the client's vision.
Which technologies were used in developing MangoBilling?
The tech stack for MangoBilling includes AngularJS, Bootstrap, NodeJS, Jenkins, MongoDB, and Amazon Bucket for sequential storage. These technologies were carefully chosen to create a robust, scalable, and user-friendly web application.
How was the upgrade process approached
The upgrade process involved a thorough discussion with the client to understand their requirements and expectations. Third Rock Techkno then designed a cloud-based web application architecture to replace the desktop app. The development process included:
  • Creating an intuitive user interface.
  • Upgrading existing features.
  • Incorporating advanced features for scalability.

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