💰 Coins & Notes Counter - Sell Project
Project Overview
Link to the app's page on the Play Store(IMPORTANT: "Visit website" button on this page is "broken" because SideProjectors adds a utm-source tag to the URL that makes it invalid. Please access it through the link above. Sorry for the inconvenience 😅)The Coins & Notes Counter was one of my first side projects. It is a personal finance Android app. With over ⭐ 690 reviews on the Play Store and recurring revenue, I'm very proud to let someone else take care of it now. 🤓 How does it work...
Detailed Description
Link to the app's page on the Play Store
(IMPORTANT: "Visit website" button on this page is "broken" because SideProjectors adds a utm-source tag to the URL that makes it invalid. Please access it through the link above. Sorry for the inconvenience 😅)
The Coins & Notes Counter was one of my first side projects. It is a personal finance Android app. With over ⭐ 690 reviews on the Play Store and recurring revenue, I'm very proud to let someone else take care of it now.
🤓 How does it work
It's an Android native app made with Java and SQLite database. Everything is processed and saved locally on the user's phones, with no API or server to host/run.
In the app, users can:
- - Count how many notes and coins they have (whether it's USD, EUR, or BRL)
- - Save and visualize their records
- - Protect the app with a PIN password
🌐 Web app
I've also developed a simple web app with React that replicates the basic functionality of the mobile app (counting money, in this case, BRL – Brazilian Real). It's included in the package and you can see it working here: https://contadormoedasenotas.com
The domain is the only expense I have, and it's equivalent to something like ~$0.83/m on Google Domains (in Brazil).
📈 How I've been monetizing it
I've been generating recurring revenue for almost 3 years now, which demonstrates the app is relevant and there's also room to grow it even further.
The main form of monetization I've used is through AdMob's ads. It's easy to set up and receive payments. There's also a one-time in-app purchase for users to remove ads if they want to.
Content Freshness & Updates
Project Timeline
Created: (4 years ago)
Last Updated: (1 day ago)
Update Status: Updated 1.525355211331 days ago - Recent updates
Version Information
Current Version: 1.0 (Initial Release)
Development Phase: Production Ready - Market validated and ready for acquisition
Next Update: <h2>Feature requests</h2><p>There is certainly a set of features requested by the existing user base that I haven't been able to fulfill yet due to other projects I'm focused on now. For example:</p><ul><li>- Being able to easily subtract coins and notes (the same way they can already be increased)</li><li>- Add financial goals, for users to keep track of their dreams in percentage of $ saved</li><li>- Backup of user data in a format like CSV</li></ul><p><br></p>
Activity Indicators
Project Views: 2,445 total views - Active engagement
Revenue Activity: $31 monthly revenue - Active monetization
Content Status: Published and publicly available
Content Freshness Summary
This project information was last updated on December 5, 2025 and represents the current state of the project. The content is very fresh and reflects recent developments. The project shows active engagement with 2,445 total views, indicating ongoing interest and relevance.
Visual Content & Media
Project Screenshots & Interface
The following screenshots showcase the visual design and user interface of 💰 Coins & Notes Counter:
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 Android,Java,React,TypeScript,SQLite.
Live Demo & Interactive Experience
Live Demo URL: https://play.google.com/store/apps/details?id=com.lucasbarzan.contadordemoedasenotas
Experience 💰 Coins & Notes Counter 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 Android,Java,React,TypeScript,SQLite 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 Android,Java,React,TypeScript,SQLite and user interface design, showcasing both the visual appeal and functional capabilities of the solution.
Technical Specifications & Architecture
Technology Stack & Implementation
Primary Technologies: Android,Java,React,TypeScript,SQLite
Technology Count: 5 different technologies integrated
Implementation Complexity: Medium - Moderate integration effort with multi-skill development
Technology Analysis
System Architecture & Design
Architecture Type: Mobile Application
Architecture Pattern: Mobile-First Architecture with responsive design principles
Scalability & Performance
Revenue Performance: $31 monthly revenue - Sustainable business model
Scalability Level: Standard - Scalable architecture ready for growth
Security & Compliance
Security Level: Production-grade security with revenue validation
Security Technologies: Modern security practices with component isolation and secure data handling
Data Protection: Revenue-generating application with user data protection and privacy compliance
Integration & API Capabilities
Live Integration: https://play.google.com/store/apps/details?id=com.lucasbarzan.contadordemoedasenotas - Active deployment with real-world integration
API Technologies: Modern API development with standard RESTful practices
Integration Readiness: Production-ready for business integration and enterprise deployment
Development Environment & Deployment
Deployment Status: Live deployment with active user base
Next Development Phase: <h2>Feature requests</h2><p>There is certainly a set of features requested by the existing user base that I haven't been able to fulfill yet due to other projects I'm focused on now. For example:</p><ul><li>- Being able to easily subtract coins and notes (the same way they can already be increased)</li><li>- Add financial goals, for users to keep track of their dreams in percentage of $ saved</li><li>- Backup of user data in a format like CSV</li></ul><p><br></p>
Technical Summary
This mobile project demonstrates advanced technical implementation using Android,Java,React,TypeScript,SQLite with sustainable revenue generation of $31 monthly and production-ready deployment. The technical foundation supports immediate business integration with modern security practices and scalable architecture.
Common Questions & Use Cases
How to Build a mobile Project Like This
Technology Stack Required: Android,Java,React,TypeScript,SQLite
Development Approach: Develop using mobile-first design principles with cross-platform compatibility. Implement touch-friendly interfaces and offline functionality.
Step-by-Step Development Guide
- Planning Phase: Define requirements, user stories, and technical architecture
- Technology Setup: Configure Android,Java,React,TypeScript,SQLite development environment
- Core Development: Implement main functionality and user interface
- Testing & Optimization: Test performance, security, and user experience
- Deployment: Deploy to production with monitoring and analytics
- Monetization: Implement revenue streams and business model
Best Practices for mobile Development
Technology-Specific Best Practices
General Development Best Practices
- Code Quality: Write clean, maintainable code with proper documentation
- Security: Implement authentication, authorization, and data protection
- Performance: Optimize for speed, scalability, and resource efficiency
- User Experience: Focus on intuitive design and responsive interfaces
- Testing: Implement comprehensive testing strategies
- Deployment: Use CI/CD pipelines and monitoring systems
Use Cases & Practical Applications
Target Audience & Use Cases
Business Use Cases: This project is ideal for businesses looking to generate revenue through proven monetization strategies. Perfect for entrepreneurs, startups, or established companies seeking mobile solutions.
Comparison & Competitive Analysis
Why Android,Java,React,TypeScript,SQLite?
This project uses Android,Java,React,TypeScript,SQLite because:
- Technology Synergy: The combination of Android,Java,React,TypeScript,SQLite creates a powerful, integrated solution
- Modern Frontend: Provides reactive, component-based user interfaces
- Community Support: Large, active communities for ongoing development and support
- Future-Proof: Modern technologies with long-term viability and updates
Competitive Advantages
- Proven Revenue: $31 monthly revenue demonstrates market validation
- Modern Tech Stack: Android,Java,React,TypeScript,SQLite provides competitive technical advantages
- Ready for Market: Production-ready solution with immediate deployment potential
Learning Resources & Next Steps
Learn Android,Java,React,TypeScript,SQLite
To understand and work with this project, consider learning:
- Android: Official documentation and community learning resources
- Java: Official documentation and community learning resources
- React: Official React documentation, tutorials, and community resources
- TypeScript: Official documentation and community learning resources
- SQLite: Official documentation and community learning resources
Hands-On Learning
Try It Yourself: https://play.google.com/store/apps/details?id=com.lucasbarzan.contadordemoedasenotas
Experience the project firsthand to understand its functionality, user experience, and technical implementation. This hands-on approach provides valuable insights into real-world application development.
Project Details
Project Type: Mobile
Listing Type: Sell
Technology Stack: Android,Java,React,TypeScript,SQLite
What's Included
domain,source_code,design
Reason for Selling
<p>I am selling this project because I am busy with other things and no longer have time to maintain this project.</p>
Technical Architecture
Technology Stack & Architecture
This mobile project is built using a modern technology stack consisting of Android,Java,React,TypeScript,SQLite. The architecture leverages these technologies to create a production-ready solution that can handle real-world usage scenarios.
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
Business Model & Revenue Potential
This project represents a mobile business opportunity with established market presence. The project currently generates $31 in monthly revenue, demonstrating proven market demand and monetization potential.
Acquisition Opportunity: <p>I am selling this project because I am busy with other things and no longer have time to maintain this project.</p> This presents an excellent opportunity for acquisition by someone looking to continue development or integrate the technology into their existing business.
Development Context & Timeline
Project Development Timeline
This project was created on March 18, 2021 and last updated on December 5, 2025. The project has been in development for approximately 57.5 months, representing 1724.5999385546 days of development time.
Technical Implementation Effort
Implementation Complexity: Medium - The project uses 5 different technologies (Android,Java,React,TypeScript,SQLite), requiring moderate integration effort and multi-skill development.
Next Development Phase: <h2>Feature requests</h2><p>There is certainly a set of features requested by the existing user base that I haven't been able to fulfill yet due to other projects I'm focused on now. For example:</p><ul><li>- Being able to easily subtract coins and notes (the same way they can already be increased)</li><li>- Add financial goals, for users to keep track of their dreams in percentage of $ saved</li><li>- Backup of user data in a format like CSV</li></ul><p><br></p>
Market Readiness & Maturity
Production Readiness: This project is market-ready and has been validated through real user engagement. The codebase is stable and ready for immediate deployment or further development.
Competitive Analysis & Market Position
Market Differentiation
Technology Advantage: This project leverages Android,Java,React,TypeScript,SQLite to create a unique solution in the mobile space. The technology stack provides modern, reactive user interfaces that sets it apart from traditional solutions.
Market Opportunity Assessment
Revenue Validation: The project's $31 monthly revenue demonstrates proven monetization potential and market willingness to pay for this type of solution. This revenue performance positions it competitively against similar offerings in the market.
Competitive Advantages
- Proven Market Success: Established user base and revenue stream provide immediate competitive advantage
- Technical Maturity: Production-ready codebase with real-world testing and optimization
- Market Validation: User engagement and revenue data prove market demand
- Modern Technology Stack: Android,Java,React,TypeScript,SQLite provides scalability, maintainability, and future-proofing
Pricing Information
Offer Price: $849 USD
Project Metrics
Average Monthly Revenue: $31
Average Monthly Downloads: 5500
About the Creator
Developer: User ID 26138
Project Links
Live Demo: https://play.google.com/store/apps/details?id=com.lucasbarzan.contadordemoedasenotas
Key Features
- Built with modern technologies: Android,Java,React,TypeScript,SQLite
- Generates $31 in monthly revenue
- Ready for immediate acquisition
Frequently Asked Questions
What is this project about?
💰 Coins & Notes Counter is a mobile project that Link to the app's page on the Play Store(IMPORTANT: "Visit website" button on this page is "broken" because SideProjectors adds a utm-source tag to the URL that makes it invalid. Please access it thro....
How much does this project cost?
This project is listed for sale at $negotiable USD. There's also an offer price of $849 USD. The price reflects the project's current revenue, user base, and market value.
What's included when I buy this project?
domain,source_code,design You'll receive everything needed to run and maintain the project.
Why is the owner selling this project?
<p>I am selling this project because I am busy with other things and no longer have time to maintain this project.</p> This is a common reason for selling successful side projects.
What technologies does this project use?
This project is built with Android,Java,React,TypeScript,SQLite. These technologies were chosen for their suitability to the project's requirements and the developer's expertise.
What are the project's current metrics?
It generates $31 in monthly revenue. These metrics indicate the project's current performance and potential.
Can I see a live demo of this project?
Yes! You can view the live demo at https://play.google.com/store/apps/details?id=com.lucasbarzan.contadordemoedasenotas. 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.