
Closed
Posted
Paid on delivery
We have an existing All-in-One Games App source code and need an experienced developer (or team) to modernize the design, add new features, and migrate the backend from Firebase to our own hosting. The app allows users to play web games. We want to: Refresh the design with a modern UI/UX. Add an option to download & play HTML5 games offline inside the app. Connect both the admin panel & mobile app to our own hosting (not Firebase). Tasks & Deliverables 1. App Redesign Modernize the UI/UX (Material 3, Jetpack Compose, or updated XML design). Improve navigation, layout, and overall user experience. Make sure the app is lightweight, fast, and responsive. 2. Offline HTML5 Game Support Add functionality for users to download web-based (HTML) games. Cache/store games locally so they can be played offline. Integrate a built-in WebView/game loader to launch games offline. Ensure smooth performance even with large games. 3. Backend & Admin Panel Migration Migrate from Firebase to custom hosting (we have Hostinger Business plan). Set up APIs to connect the app with backend (PHP/Laravel or Node.js preferred). Update existing admin panel to work with new hosting. Ensure secure user authentication, database handling (MySQL/PostgreSQL). 4. Optimization & Testing Optimize app performance and loading speed. Fix any existing crashes/bugs in the source code. Test both Android app & admin panel thoroughly.
Project ID: 39742952
61 proposals
Remote project
Active 8 mos ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
61 freelancers are bidding on average $158 USD for this job

As a part of Einnovention, I want to stress the value we place on collaborative partnerships with our clients. With over a decade of experience and 248 projects under our belt on Freelancer, we’ve developed an exceptional capacity for understanding and delivering what our clients truly need. Regarding your project, our team of 25 developers and designers can expertly handle every facet. We’re well-versed in HTML5 game development, backend migration, and app design revitalization. Migrating from Firebase to your own hosting is something we have done often, giving us the knowledge necessary to perform this task smoothly for you. We will ensure your admin panel and mobile application connect seamlessly with your new hosting. Moreover, our skills extend beyond just technical prowess; we have a keen eye for creating great UX/UI experiences tailored to user preferences. Our modern design aesthetic matches well with Material 3, Jetpack Compose or updated XML design within the stated description. We understand that you want an improved user experience with faster response time and bug-free performance – these are core competencies of ours as proven by our impressive project completion track records and 4.9/5 rating. Let's partner together and build an unbeatable gaming experience for your users!
$250 USD in 15 days
8.0
8.0

جان پہچان کرنا I'm , a seasoned software developer with over years of experience in building and maintaining high-performing mobile applications. My expertise lies in full-stack development, with a strong focus on UI/UX design, backend development (including serverless architectures and self-hosted solutions), and game integration. I possess a deep understanding of various technologies including . I have a proven track record of delivering robust, scalable, and user-friendly applications within budget and on time. I understand you require a complete modernization of your existing all-in-One games app. This involves a UI/UX redesign to adopt a modern aesthetic, the addition of new features (details to be discussed), and the critical migration of your backend infrastructure from Firebase to your own hosting solution. The app currently hosts and allows users to play web games. My skills are perfectly aligned with the project's needs. My experience in UI/UX design ensures a visually appealing and intuitive user experience. My proficiency in guarantees a smooth and efficient migration from Firebase to your chosen hosting environment. My familiarity with game integration will ensure seamless integration of new games and efficient performance optimization. "I recently led the development of a mobile application with over users, featuring a complex backend built using Node.js and a sleek UI designed using React Native. This project demonstrated my ability to manage complex development processes and deliver high-quality results under pressure." "My portfolio includes showcasing projects highlighting similar backend migration and UI/UX overhauls." "My approach involves a phased development process, starting with a thorough assessment of your current codebase, followed by design mockups, iterative development sprints, rigorous testing, and finally, deployment and ongoing support." I'm confident that my expertise and experience can significantly enhance your application and deliver a superior user experience. I'd be delighted to discuss the project further, including a detailed scope of work, timeline, and pricing. Please contact me at to schedule a call. I am committed to delivering high-quality work, meeting deadlines, and maintaining open and transparent communication throughout the project lifecycle. Regular updates and progress reports will be provided to ensure you're informed every step of the way. I look forward to hearing from you soon. Giáp Văn Hưng
$250 USD in 7 days
6.8
6.8

We are a perfect match-Your search is over I see the need to modernize the All-in-One Games App, focusing on a clean UI and seamless user experience. I am a seasoned developer with extensive experience in modernizing app designs and integrating new features. For a recent project, I revamped a gaming platform UI resulting in a 20% increase in user engagement. To complete this project, I recommend the following steps: 1. Redesign the app using Material 3 or Jetpack Compose for a modern look. 2. Implement offline gameplay functionality for HTML5 games. 3. Migrate the backend to custom hosting, ensuring secure authentication and database handling. 4. Optimize app performance and conduct thorough testing. While new to Freelancer, I offer years of experience, punctuality, and a focus on client satisfaction. I am ready to start and committed to delivering high-quality results. Lets Chat.
$150 USD in 14 days
5.7
5.7

Hi, I see that you’re looking to revamp your All-in-One Games App by modernizing its design, adding offline game support, and migrating the backend to your own hosting. My approach would involve creating a sleek, user-friendly UI/UX that enhances navigation and performance, ensuring users enjoy a smooth experience. For the offline HTML5 game feature, I would implement a reliable caching system so users can download and play games without needing an internet connection. Additionally, I have experience with PHP and Laravel, which would be perfect for migrating your backend and setting up secure APIs for the app. With 5+ years of experience in mobile app development, I’m confident I can help you achieve your goals efficiently. Best regards, Mehran
$200 USD in 4 days
5.4
5.4

Hello, I can modernize your All-in-One Games App with a refreshed Material 3 UI, offline HTML5 game support, and full backend migration from Firebase to your Hostinger server. I’ll optimize performance, update the admin panel, fix bugs, and deliver a fast, secure, and reliable app ready for users. Ready to get started right away. Best regards, Ravindra
$240 USD in 7 days
4.8
4.8

As a top-rated, experienced and highly skilled full-stack developer, I am confident that I am the perfect fit for your all-in-one games app project. Over my 9+ years in mobile app development, I have successfully completed over 550 projects, with an accuracy rate of nearly 100%. My skills in front-end design and back-end development (including Node.js and PHP/Laravel) align perfectly with your need for refreshing the UI/UX design and migrating to a new hosting service. Moreover, my proficiency in React Native will be invaluable as we add the offline HTML5 game support feature into your app. I can ensure seamless functionality such as downloading and locally playing web-based games, effectively integrating a built-in WebView/game loader, and optimizing performance regardless of game sizes. Lastly, with my prior experience in migrating backend from Firebase to custom hosting, your transition will be smooth and secure. In the end, what sets me apart is not only my technical skills but also my meticulous nature which guarantees thorough testing and utmost quality to deliver you a lightweight, fast, responsive app
$140 USD in 7 days
5.6
5.6

As a leading Web, App, and Game development company, we possess the exact set of skills and experience your project demands. With over seven years in the industry, we bring deep expertise in Backend Development (including PHP) and HTML5, which are crucial for successfully modernizing your All-in-One Games App. Our development strategies are centered around delivering smooth user experiences and blistering-fast performance - exactly what you need. Moreover, we understand the importance of migrating from Firebase to custom hosting, as it empowers better control and scalability. With our proficiency in hosting migrations and database management using MySQL/PostgreSQL, we can ensure seamless transitions while maintaining top-notch security practices. We're also well-versed in creating APIs that link apps to backend servers using PHP/Laravel or Node.js. Lastly, I’d like to stress our proficiency in constructing customized solutions based on client requirements. We can redesign your app with striking UI/UX grounded in Material 3, Jetpack Compose, or updated XML design - making it lightweight, fast, responsive (critical for mobile gaming). Furthermore, we can introduce offline support for HTML5 games and optimize your app's performance through extensive testing sessions. So why settle when you can have a revenant chimpanzee...champion? Trust our team to make your project stand out!
$240 USD in 7 days
4.7
4.7

With over 9 years of experience in building and modernizing mobile apps, I'm confident that I'm the best fit for your All-in-One Games App project! My technical expertise in Android development and my proficiency with UI/UX design will ensure a smooth, user-friendly interface for your app. Whether it's implementing Material 3 or utilizing Jetpack Compose for the app redesign, I'm familiar with the tools that can deliver a modern and responsive app design. The Functionalities you've requested- like offline HTML5 game support involves caching, storing, and integrating features for a smooth offline gaming experience- all fall in my area of specialization. Being proficient With Flutter & React Native(iOS/Android), I Offer cross-platform mobile app development And ensure your games run seamlessly on different devices. Additionally, the migration from Firebase to hostinger Business Plan backend solution you've asked for including APIs set up and securing proper user authentication falls right within my skillset. my competency in node.js,and database handling (particularly MySQL) aligns almost perfectly with your objectives, assuming that technology is use in the back end operations My goal is to optimize every aspect of your app, identify and fix any crashes/bugs in the source code, and meticulously test the entire system to ensure it performs at its best before delivery. Let's talk about your project!
$180 USD in 7 days
4.2
4.2

As an experienced digital marketer, I’ve helped numerous clients enhance their products and services through designing beautiful, intuitive user interfaces that increase engagement. I will take your All-in-One Games App to the next level by modernizing its UI/UX into either Material 3, Jetpack Compose or updated XML design, ensuring that it’s lightweight, fast, and responsive for the best possible gaming experience. In addition to revamping your app's design, I’ll add a crucial feature: enabling users to download HTML5 games for offline play. As a skilled developer, I am well-versed in integrating web-based loaders like WebView to smoothly launch games locally even without an internet connection. My goal is to make sure your users can access a broad range of gaming experiences anytime, anywhere. Moreover, my expertise extends to migrating app backends and setting up APIs. I’ll move your app from Firebase to your own custom hosting (Hostinger Business Plan) and ensure secure user authentication, robust database handling with MySQL/PostgreSQL ensuring seamless connectivity between the mobile app and admin panel using PHP/Laravel or Node.js
$100 USD in 4 days
4.3
4.3

Hi Saanaan, I have carefully read your job description and I am confident I can handle this project successfully. With my skills and experience in PHP, Graphic Design, I will ensure the work is completed with accuracy, professionalism, and delivered on time. I always focus on providing quality results that meet client expectations and add real value. I have worked on similar projects before and understand the importance of clear communication, attention to detail, and reliability throughout the process. You can expect full dedication, regular updates, and a smooth workflow from my side. I am ready to get started right away and would be glad to discuss the project details with you. Best regards, Sidra
$140 USD in 7 days
3.9
3.9

Hi Saanaan, I’m excited to work on modernizing and enhancing your All-in-One Games App! Here’s how I plan to tackle the project: 1. Revamp UI/UX: Using Material design principles, I will refresh the app’s aesthetics and improve user navigation for a seamless experience. 2. Offline Game Feature: I will add a function allowing users to download and play HTML5 games offline within the app, ensuring smooth performance. 3. Backend Migration: I will transition the app from Firebase to your Hostinger hosting, connecting it securely with PHP/Laravel or Node.js APIs. 4. Optimization & Testing: I will optimize app performance, fix any bugs, and conduct thorough testing. Let’s create a top-notch gaming experience together! Best regards, Christoff
$100 USD in 7 days
3.9
3.9

Hello, Experienced Mobile Engineering Manager with 11+ years in Android app design (Jetpack Compose, Material 3), backend migration, and feature development for high-performance apps. I’ve led teams delivering 15+ successful apps and specialize in UI/UX refresh, offline features, and cross-platform integration. For your Games App, I will: Redesign the UI/UX for a modern, responsive experience using Material 3 or Jetpack Compose. Implement offline HTML5 game downloads and seamless in-app gameplay with caching and WebView loader. Migrate backend/admin panel from Firebase to Hostinger with secure APIs (PHP/Laravel or Node.js), robust authentication, and optimized database handling. Ensure fast app performance, fix bugs/crashes, and provide thorough testing. Ready for immediate collaboration—delivering scalable results for both Android and web admin. Let’s make your app the go-to games platform! Best regards, Aman Gupta
$440 USD in 15 days
3.6
3.6

I’ve optimized gaming apps before — fast UI, offline HTML5 support, and Firebase-to-Hostinger migration. You’ll get clean code, smooth performance, and a modern experience users love. Let’s make your app feel flagship, even with heavy games onboard.
$140 USD in 7 days
3.7
3.7

Hello, I believe I would be a great fit for your project. I would love the opportunity to discuss the details further with you. Providing high-quality results is always my top priority. You can review my profile. Thank you for your time and consideration. Thank you.
$140 USD in 7 days
2.5
2.5

Hello, As an experienced and results-driven Full-Stack Developer, with a solid background in working with complex app structures such as yours, I am confident in my ability to meet and exceed your expectations. My experience spans a multitude of platforms from Python to Java to JavaScript, including solid skills in building responsive Android applications. As such, I have honed my problem-solving skills over the years and can leverage them effectively to give you the sleek design and intuitive user experience you desire for the All-in-One Games App. In regards to upgrading the Games App with HTML5 offline functionality, I've had significant accomplishments in caching data locally and enabling offline usage, even with large datasets. This means that I can design a system that not only allows users to download their favorite web games but also guarantees a smooth performance irrespective of the game size. Furthermore, my expertise in migration from cloud platforms such as Firebase to custom hosting environments should inspire confidence in having me handle the backend transfer for your project. Any project worth doing is worth doing exceptionally well, that's why I am not only committed to giving you an improved design for the All-in-One Games App, but also ensuring that it is lightweight, fast and efficient. With an emphasis on delivering clean code with minimal crashes/bugs, I'll thoroughly test your Android app alongside your admi Thanks!
$30 USD in 5 days
1.5
1.5

Hello Saanaan, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on PHP, Graphic Design, Mobile App Development, Android, User Interface / IA, HTML5, Laravel, UX / User Experience, UI / User Interface, Backend Development Lets connect in chat so that We discuss further. Regards
$140 USD in 7 days
1.2
1.2

"I believe we are a perfect fit for your project. The tasks outlined, such as modernizing the UI/UX, adding offline HTML5 game support, and backend migration resonate with our expertise in UI/UX design, app development, and backend integration. While I am new to freelancer, I have tons of experience and have done other projects off-site. I would love to chat more about your project! Worst case scenario you walk away with a free consultation. Regards, Zander Steenkamp"
$200 USD in 10 days
0.6
0.6

I am a perfect fit for your project. Modernizing the app UI/UX to be clean and user-friendly aligns with my expertise in creating professional designs. While I am new to freelancer, I have tons of experience in redesign projects off-site. Adding offline HTML5 game support and migrating the backend seamlessly are key areas I excel in. My skills include improving navigation, integrating new features, and optimizing app performance. I would love to chat more about your project! Regards, Duane Davids
$150 USD in 14 days
0.0
0.0

"The perfect match for your needs right here. I understand the need for a modernized, user-friendly UI/UX, seamless offline HTML5 game support, and migration to custom hosting. While I am new to Freelancer, I have significant experience and expertise in app redesign, backend migration, and optimization. I would love to chat more about your project! Regards, Peter Maree"
$150 USD in 14 days
0.0
0.0

I have analyzed this project and I have to say it aligns perfectly with my expertise in mobile app development, UI/UX design, backend migration, and optimization. Your need for redesigning the app with Material 3 or Jetpack Compose, implementing offline HTML5 game support, migrating backend to custom hosting, and conducting thorough testing aligns perfectly with my skills in modernizing UI/UX, integrating new features, backend development, and quality assurance. I'm available to start immediately and deliver on schedule. I guarantee high-quality results and offer competitive pricing. If not satisfied, you simply don't pay. Send me a message so we can discuss your project in more detail. Regards, Garren Katts
$150 USD in 14 days
0.0
0.0

Pakistan
Payment method verified
Member since Aug 29, 2025
$30-250 USD
$10-30 USD
$15-30 USD
€30-250 EUR
₹100-400 INR / hour
$10-30 USD
$15-25 USD / hour
₹750-1250 INR / hour
₹1500-12500 INR
$10-30 USD
$250-500 USD
$8-15 USD / hour
$30-80 NZD
₹12500-37500 INR
$30-250 SGD
₹12500-37500 INR
€250-750 EUR
$175-350 USD
$250-750 USD
₹75000-150000 INR
$750-1500 USD
₹12500-37500 INR
$250-750 USD