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$
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I will develop complete custom android app using java
Zunaid
About this gig
Why should we work together?
I specialize in developing professional, user-friendly, and reliable Android applications using Java. I can build custom Android apps according to your requirements, whether you need a new application or modifications to an existing project.
I focus on clean UI, smooth functionality, secure data handling, and well-structured code.
What I can provide:
Custom Android app development using Java
Modern and user-friendly UI design
REST API and third-party API integration
PHP & MySQL backend development
Database integration
Online & offline functionality
Offline data caching and local database
Online/offline data synchronization
Firebase integration
Ad integration and monetization
Data encryption and application security
Bug fixing and error solving
Performance improvements
Existing Android app modification
Google Play Store publishing assistance
Complete and organized source code
What I need from you:
Please provide your complete requirements, preferred design or reference, app content, API documentation, and any other necessary resources if available.
If you already have an Android project, you can provide the source code and explain the changes or new feat
Get to know Zunaid
Zunaid
Android Mobile App Developer, Java, PHP, MySQL, API Integration
- FromBangladesh
- Member sinceAug 2026
Languages
Bengali, English
I’m an Android Mobile App Developer specializing in Java, PHP, MySQL, and API integration.
I build professional Android apps with clean UI/UX and reliable backend systems. I can handle complete app development, including REST APIs, PHP/MySQL, SQLite, Firebase, authentication, encryption, secure data handling, data synchronization, backup & restore, automation, bug fixing, and optimization.
I focus on clean, maintainable code and reliable solutions.
If you need a new Android app, backend/API integration, database functionality, or improvements to an existing app, I’m ready to help.
My Portfolio
FAQ
Do you develop custom Android apps?
Yes. I develop custom Android applications using Java based on your specific requirements, features, and design.
Can you develop the backend for my Android app?
Yes. I can develop PHP and MySQL-based backend systems, including database integration and API development for Android applications.
Can you add advertisements to my app?
Yes. I can integrate advertisements such as Google AdMob into your Android application according to your requirements.
Can you work with an existing Android project?
Yes. I can modify, improve, or add new features to an existing Android project. Please provide the source code and explain the changes you need.
Can you develop an Android app that works both online and offline?
Yes. I can develop Android applications with both online and offline functionality. The app can use online data when an internet connection is available and cached or locally stored data when the device is offline.
Can the app automatically switch between online and offline mode?
Yes. I can implement automatic online/offline detection so the application can switch between remote API data and locally stored data depending on the internet connection.
