How much is FactuSpark – Professional Invoice App?

FactuSpark – Professional Invoice App is listed for sale at $650 USD.

FactuSpark – Professional Invoice App - Sell Project

Name: FactuSpark – Professional Invoice App
Price: 650 USD
Availability: InStock

Listed October 20, 2025

About FactuSpark – Professional Invoice App

Smart app to create, manage, and export invoices in PDF format.

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 minimalist user interface • Google Sign-In authentication • Firebase integration for secure data storage • Optional video ad system to remove watermark (ready for monetization) • Fully customizable logo (buyers can replace the app logo easily) 🧩 Built with: • Flutter (cross-platform framework) • Firebase (Auth + Firestore) • Google Mobile Ads SDK (ready for monetization) 💼 Why it’s valuable: FactuSpark is production-ready and professionally structured, ideal for resale, customization, or direct publishing on Google Play. The buyer receives full source code, project documentation, and complete rights to modify branding and monetization setup. 💰 Suggested resale or commercial use: The app can be reskinned and sold as a white-label invoicing tool or monetized through ads and premium features. Selling price: $650 USD (negotiable)

Project details

Built with: flutter,dart,Firebase,google cloud,Android Studio

Website: https://drive.google.com/file/d/1qIm7zVHrT67qPMgFrsh_2TjgyHie9nJ3/view?usp=drivesdk

Next step: 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.Additional monetization options such as in-app purchases or premium templates can be added with minimal effort.The app’s structure allows for quick localization to new languages and integration with third-party APIs (e.g., PayPal, Stripe).A motivated buyer could grow this project into a full invoicing platform or subscription-based business with minimal initial investment.

For sale

Asking price: $650 USD

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.

Project metrics

Average Monthly Revenue: Undisclosed