Browse categories
Explore
Fiverr Pro
English
$
USD
I will develop offline and online application or online offline
Zunaid
About this gig
Are you looking for a reliable Android developer to build an app that works both online and offline?
I can create professional Android applications using Java and Android Studio, with proper offline data storage and online API integration.
What I can provide:
Online & Offline Android App
REST API integration
Local data storage using SQLite / Room / SharedPreferences
Data synchronization between online and offline modes
Login & user authentication
CRUD operations
Firebase integration when required
Clean and responsive UI
API & backend integration
I focus on building apps that are stable, user-friendly, and easy to maintain. Whether your app needs to work completely offline or switch between online and offline modes, I can develop a solution based on your requirements.
Please contact me before placing an order so we can discuss your project requirements and choose the right solution.
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
Can you add offline support to my existing Android app?
Yes. I can add offline functionality to an existing Android Studio project based on your requirements.
Can the app work without an internet connection?
Yes. I can implement local data storage so selected features can work when the device is offline.
Can you synchronize offline data with my server?
Yes. I can implement API-based synchronization when the internet connection is available.
Can you work with my existing API?
Yes. I can integrate your existing REST API for online and offline data synchronization.
Can you create the API if I don't have one?
Yes. I can develop a custom REST API using PHP and MySQL if required.
Can you use SQLite for offline storage?
Yes. I can use SQLite for local data storage and synchronization when suitable for the project.
Will the data sync automatically when internet returns?
Yes. Automatic synchronization can be implemented according to your app's requirements.
