FactuSpark – Professional Invoice App - Sell Project
Project Overview
FactuSpark is a modern and elegant mobile application built with Flutter and Firebase. It allows users to easily create, edit, and download professional invoices in PDF format — ideal for freelancers, small businesses, and professionals who need a simple and reliable billing tool.✨ Key Features:• Generate professional invoices instantly in PDF format • Add clients, products, and taxes (VAT/IVA) with full control • Supports multiple languages (Spanish, English, Romanian) • Clean and minimalis...
Detailed Description
Visual Content & Media
Project Screenshots & Interface
The following screenshots showcase the visual design and user interface of FactuSpark – Professional Invoice App:
Screenshot 1: Main Dashboard & Primary Interface
This screenshot displays the main dashboard and primary user interface of the application, showing the overall layout, navigation elements, and core functionality. The interface demonstrates the modern design principles and user experience patterns implemented using flutter,dart,Firebase,google cloud,Android Studio.
Live Demo & Interactive Experience
Live Demo URL: https://drive.google.com/file/d/1qIm7zVHrT67qPMgFrsh_2TjgyHie9nJ3/view?usp=drivesdk
Experience FactuSpark – Professional Invoice App firsthand through the live demo. This interactive demonstration allows you to explore the application's features, test its functionality, and understand its user experience. The live demo showcases the mobile application's technical capabilities implemented with flutter,dart,Firebase,google cloud,Android Studio and real-world performance, providing a comprehensive understanding of the project's value and potential.
Visual Content Summary
This project includes 1 screenshotno videos plus a live demo, providing comprehensive visual documentation of the mobile application. The media content demonstrates the project's technical implementation using flutter,dart,Firebase,google cloud,Android Studio and user interface design, showcasing both the visual appeal and functional capabilities of the solution.
Technical Specifications & Architecture
Technology Stack & Implementation
Primary Technologies: flutter,dart,Firebase,google cloud,Android Studio
Technology Count: 5 different technologies integrated
Implementation Complexity: Medium - Moderate integration effort with multi-skill development
Technology Analysis
Common Questions & Use Cases
Use Cases & Practical Applications
Target Audience & Use Cases
Business Use Cases: This project is ideal for businesses looking to implement a ready-made solution. Perfect for entrepreneurs, startups, or established companies seeking mobile solutions.
Project Details
Project Type: Mobile
Listing Type: Sell
Technology Stack: flutter,dart,Firebase,google cloud,Android Studio
What's Included
Source code, All related design work, All related data
The sale includes the full Flutter source code, Firebase integration, all UI/UX designs, app icons, and logo. The buyer will receive the complete project folder, ready to open in Android Studio or Visual Studio Code. Documentation is provided to help with AdMob setup, Firebase configuration, and release build creation. No domain or social media accounts are included. The project is ready for immediate publishing on Google Play or any other Android store.
Reason for Selling
FactuSpark is a fully developed mobile app built with Flutter and Firebase. The project is complete and ready for publication, but I’m focusing on other new projects and don’t have enough time to maintain it. I’d like to transfer ownership to someone who can continue developing and scaling it. It’s a perfect opportunity for entrepreneurs or developers looking for a ready-to-launch invoicing app with clean code and a professional UI.
Technical Architecture
Technology Stack & Architecture
This mobile project is built using a modern technology stack consisting of flutter,dart,Firebase,google cloud,Android Studio.
Architecture Type: Mobile - This indicates the project follows mobile-first design principles with responsive interfaces.
Technical Complexity: Multi-technology stack requiring integration expertise
Business Context & Market Position
Development Context & Timeline
Project Development Timeline
This project was created on October 20, 2025 and last updated on September 11, 2026. The project has been in development for approximately 11 months, representing 328.70567152727 days of development time.
Technical Implementation Effort
Implementation Complexity: Medium - The project uses 5 different technologies (flutter,dart,Firebase,google cloud,Android Studio), requiring moderate integration effort and multi-skill development.
Next Development Phase: <p>The buyer can easily take this project further by publishing the app on the Google Play Store and connecting their own AdMob account to start generating revenue.</p><p>Additional monetization options such as in-app purchases or premium templates can be added with minimal effort.</p><p>The app’s structure allows for quick localization to new languages and integration with third-party APIs (e.g., PayPal, Stripe).</p><p>A motivated buyer could grow this project into a full invoicing platform or subscription-based business with minimal initial investment.</p>
Competitive Analysis & Market Position
Market Differentiation
Technology Advantage: This project leverages flutter,dart,Firebase,google cloud,Android Studio to create a unique solution in the mobile space. The technology stack provides cutting-edge technical implementation that sets it apart from traditional solutions.
Competitive Advantages
- Modern Technology Stack: flutter,dart,Firebase,google cloud,Android Studio provides scalability, maintainability, and future-proofing
Pricing Information
Offer Price: $650 USD
Project Metrics
Average Monthly Revenue: Undisclosed
About the Creator
Developer: User ID 197137
Project Links
Live Demo: https://drive.google.com/file/d/1qIm7zVHrT67qPMgFrsh_2TjgyHie9nJ3/view?usp=drivesdk
Key Features
- Built with modern technologies: flutter,dart,Firebase,google cloud,Android Studio
- Listed for sale
Frequently Asked Questions
What is this project about?
FactuSpark – Professional Invoice App is a mobile project that FactuSpark is a modern and elegant mobile application built with Flutter and Firebase. It allows users to easily create, edit, and download professional invoices in PDF format — ideal for freelancers,....
How much does this project cost?
This project is listed for sale at $minimum USD. There's also an offer price of $650 USD.
What's included when I buy this project?
Source code, All related design work, All related data.
Why is the owner selling this project?
FactuSpark is a fully developed mobile app built with Flutter and Firebase. The project is complete and ready for publication, but I’m focusing on other new projects and don’t have enough time to maintain it. I’d like to transfer ownership to someone who can continue developing and scaling it. It’s a perfect opportunity for entrepreneurs or developers looking for a ready-to-launch invoicing app with clean code and a professional UI.
What technologies does this project use?
This project is built with flutter,dart,Firebase,google cloud,Android Studio. These technologies were chosen for their suitability to the project's requirements and the developer's expertise.
What are the project's current metrics?
Monthly revenue: Undisclosed.
Can I see a live demo of this project?
Yes! You can view the live demo at https://drive.google.com/file/d/1qIm7zVHrT67qPMgFrsh_2TjgyHie9nJ3/view?usp=drivesdk. This will give you a better understanding of the project's functionality and user experience.
How do I contact the project owner?
You can contact the project owner through SideProjectors' messaging system. Click the "Contact" button on the project page to start a conversation about this project.
Is this project still actively maintained?
Since this project is for sale, the current owner may be looking to transfer maintenance responsibilities to the buyer.