Android App Sum Calculator - Sell Project
Project Overview
Play Store link📲 Android App that lets you calculate your score on Brazilian entrance exams summation questionsThe Sum Calculator is an app where you can calculate your score on Brazilian entrance exams summation questions.Based on the formula applied in the entrance exams at FUSC (Federal University of Santa Catarina), this app quickly calculates the score received according to the feedback, the answer, the number of prepositions, and the value of the question.👥 Who is it for?Students who wan...
Detailed Description
📲 Android App that lets you calculate your score on Brazilian entrance exams summation questions
The Sum Calculator is an app where you can calculate your score on Brazilian entrance exams summation questions.
Based on the formula applied in the entrance exams at FUSC (Federal University of Santa Catarina), this app quickly calculates the score received according to the feedback, the answer, the number of prepositions, and the value of the question.
👥 Who is it for?
- Students who want to see how many points they should receive;
- Teachers who want to correct the summation questions of their students in a fair, correct, and effective way.
🤓 How does it work
It's an Android native app made with Java and SQLite database. Everything is processed and saved locally on the users' phones, with no API or server to host/run (i.e., no costs).
📈 How can I monetize it?
The app has had ~4,500 downloads and can be easily monetized through ads using AdMob's easy and straightforward integration.
👨🏻💻 Who am I?
I'm a Full Stack developer and Computer Science student. I like to give my best when creating something, and this app is something I'm proud to show the world. This is my fourth time selling one of my side projects (you can see the other projects here, here, and here.
Content Freshness & Updates
Project Timeline
Created: (4 years ago)
Last Updated: (6 days ago)
Update Status: Updated 6.2140341815856 days ago - Recent updates
Version Information
Current Version: 1.0 (Initial Release)
Development Phase: Production Ready - Market validated and ready for acquisition
Activity Indicators
Project Views: 1,707 total views - Active engagement
Content Status: Published and publicly available
Content Freshness Summary
This project information was last updated on December 1, 2025 and represents the current state of the project. The content is very fresh and reflects recent developments. The project shows active engagement with 1,707 total views, indicating ongoing interest and relevance.
Visual Content & Media
Project Screenshots & Interface
The following screenshots showcase the visual design and user interface of Android App Sum Calculator:
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,Play Store.
Live Demo & Interactive Experience
Live Demo URL: https://play.google.com/store/apps/details?id=com.lucasbarzan.somatoria
Experience Android App Sum Calculator 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,Play Store 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,Play Store 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,Play Store
Technology Count: 3 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
Scalability Level: Standard - Scalable architecture ready for growth
Security & Compliance
Security Level: Commercial-grade security for business applications
Security Technologies: Modern security practices and secure coding standards
Data Protection: Standard data protection practices for user information and application data
Integration & API Capabilities
Live Integration: https://play.google.com/store/apps/details?id=com.lucasbarzan.somatoria - 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
Technical Summary
This mobile project demonstrates advanced technical implementation using Android,Java,Play Store with 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,Play Store
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,Play Store 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 implement a ready-made solution. Perfect for entrepreneurs, startups, or established companies seeking mobile solutions.
Comparison & Competitive Analysis
Why Android,Java,Play Store?
This project uses Android,Java,Play Store because:
- Technology Synergy: The combination of Android,Java,Play Store creates a powerful, integrated solution
- Community Support: Large, active communities for ongoing development and support
- Future-Proof: Modern technologies with long-term viability and updates
Competitive Advantages
- Modern Tech Stack: Android,Java,Play Store provides competitive technical advantages
- Ready for Market: Production-ready solution with immediate deployment potential
Learning Resources & Next Steps
Learn Android,Java,Play Store
To understand and work with this project, consider learning:
- Android: Official documentation and community learning resources
- Java: Official documentation and community learning resources
- Play Store: Official documentation and community learning resources
Hands-On Learning
Try It Yourself: https://play.google.com/store/apps/details?id=com.lucasbarzan.somatoria
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,Play Store
What's Included
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,Play Store. 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 shows strong potential for revenue generation based on its user base and market positioning.
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 July 10, 2021 and last updated on December 1, 2025. The project has been in development for approximately 53.7 months, representing 1610.9212216876 days of development time.
Technical Implementation Effort
Implementation Complexity: Medium - The project uses 3 different technologies (Android,Java,Play Store), requiring moderate integration effort and multi-skill development.
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,Play Store to create a unique solution in the mobile space. The technology stack provides cutting-edge technical implementation that sets it apart from traditional solutions.
Market Opportunity Assessment
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,Play Store provides scalability, maintainability, and future-proofing
Pricing Information
Offer Price: $149 USD
About the Creator
Developer: User ID 26138
Project Links
Live Demo: https://play.google.com/store/apps/details?id=com.lucasbarzan.somatoria
Key Features
- Built with modern technologies: Android,Java,Play Store
- Ready for immediate acquisition
Frequently Asked Questions
What is this project about?
Android App Sum Calculator is a mobile project that Play Store link📲 Android App that lets you calculate your score on Brazilian entrance exams summation questionsThe Sum Calculator is an app where you can calculate your score on Brazilian entrance ex....
How much does this project cost?
This project is listed for sale at $set USD. There's also an offer price of $149 USD. The price reflects the project's current revenue, user base, and market value.
What's included when I buy this project?
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,Play Store. These technologies were chosen for their suitability to the project's requirements and the developer's expertise.
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.somatoria. 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.