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I'm looking for a skilled developer to create web, Android, and iOS apps with identical features across all platforms. Ideal Skills and Experience: - Proficiency in web, Android, and iOS development - Experience in creating cohesive multi-platform applications - Strong UI/UX design skills - Knowledge of backend integration - Familiarity with user authentication and in-app purchase systems Please provide portfolios and relevant experiences.
Project ID: 40378755
150 proposals
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Active 1 mo ago
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150 freelancers are bidding on average £25 GBP/hour for this job

A Warm Hello! We are readily available to start working on this project! We are confident to provide you multi-platform application across web, Android, and iOS with a consistent and seamless user experience. We specialize in building cohesive, high-performance applications that function flawlessly across platforms. Our team includes experienced frontend and backend developers, mobile specialists, and UI/UX designers who collaborate to ensure both visual consistency and technical reliability. We would love to learn more about your project vision, target audience, and specific features so we can refine the scope and provide a tailored timeline and cost estimate. Looking forward to the opportunity to collaborate. Best regards, Ana
£18 GBP in 40 days
9.4
9.4

With over a decade of experience in full-stack architecture and high-scale systems, I understand your need for a skilled developer to create a multi-platform application with identical features across web, Android, and iOS. My background in delivering high-performance solutions, such as scaling apps for over 1 million users, directly applies to the complexities of your project. In order to ensure the scalability and security of your multi-platform app, a key strategic insight would be to focus on streamlined backend integration for seamless functionality across all platforms. Drawing from my experience in developing high-security FinTech systems, I am confident in my ability to meet and exceed your expectations for this project. I encourage you to reach out to discuss the roadmap for your multi-platform app development. I am excited about the opportunity to collaborate and bring your vision to life.
£28.80 GBP in 15 days
8.7
8.7

Hi, I'm Ram Shiromani, and if you're looking for a team to develop your multi-platform application with precision, skill, and a clear understanding of the project's requirements, then look no further. With over a decade of experience in Web Development, Mobile App Development, and UI/UX Design, we have all the necessary skills to make your project a success. One of our core competencies is creating cohesive multi-platform applications that perform identically across web, Android, and iOS platforms. Our strong UI/UX design expertise ensures that your app will not only work flawlessly but offer a seamless user experience too. Moreover, our in-depth knowledge of backend integration, user authentication systems, and in-app purchase systems guarantee that the essential functionalities of your app will be top-notch. What sets us apart is our holistic approach towards digital assets development - we understand that high-converting apps are just one piece of the puzzle. For long-term growth and scalability, we take into consideration the bigger picture - from initial funnel design to data-driven decisions and continuous optimization. Invest in us, and you'll be investing in a comprehensive solution that's designed not only for current needs but also to support future development. Let's get started on creating a robust app ecosystem for your business.
£27 GBP in 40 days
8.7
8.7

Hi, I will build your web, Android, and iOS apps using a single Flutter codebase — covering shared UI, user authentication, and in-app purchases across all three platforms. For consistency at this scale, I will structure the app with a shared design system so every button, font, and spacing value stays identical across platforms without manual duplication. Questions: 1) Do you have a backend already, or will that need to be built as well? 2) What core features should the first version include? Looking forward to talking through the details. Kamran
£24 GBP in 40 days
8.2
8.2

Dear , We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time. We are 25 years in this business and our technical specialists have strong experience in Graphic Design, Mobile App Development, iPhone, Android, User Interface / IA, UI / User Interface, Web Development, iOS Development, Backend Development, App Development and other technologies relevant to your project. Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews. Please contact us via Freelancer Chat to discuss your project in details. Best regards, Sales department Tangram Canada Inc.
£25 GBP in 5 days
8.4
8.4

As someone who has extensive experience not only in web and mobile development, but also across multiple platforms, I strongly believe I would be an excellent fit for your project. Having been a developer for over 14 years, my expertise is not limited to just one area. Rather, it extends to encompassing a broad range of skills including Android and iOS app development, backend integration, and even UI/UX design. I understand the importance of creating cohesive multi-platform applications and have successfully executed similar projects in the past. My extensive knowledge of user authentication and in-app purchase systems would also be an added advantage as these are key features you require.
£18 GBP in 40 days
7.4
7.4

I am expert web and mobile app developer , i have completed over 100+ projects so far lets connect so we can dicusss your requirements thanks
£18 GBP in 40 days
7.0
7.0

Hi, We’ve developed several multi-platform apps using frameworks like React Native and Flutter, ensuring a consistent experience across web and mobile. One of our recent projects, Descripio, involved creating a web app and mobile apps for iOS and Android, where we integrated Stripe for subscriptions and used Google and Microsoft APIs for authentication. We also have strong backend expertise with Node.js and PHP, so we can handle server-side development and API integrations seamlessly. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit. I usually respond within 10 minutes. I’m eager to learn more about your exciting project. Best regards, Adil
£25.06 GBP in 40 days
6.3
6.3

Hello! As per your project post, you’re looking to build a multi-platform application that runs consistently across web, Android, and iOS with identical features, ensuring a seamless user experience regardless of device. The goal is to create a unified system with consistent UI/UX, shared functionality, and a strong backend that supports authentication, in-app purchases, and scalable performance across all platforms. My focus will be on delivering a cohesive multi-platform solution, featuring: a single scalable architecture using technologies like Flutter or React + React Native to maintain feature parity across web and mobile; secure user authentication (JWT/OAuth-based); in-app purchase integration aligned with App Store and Play Store requirements; and a responsive, consistent UI/UX design system that ensures identical behavior and appearance across devices. I specialize in building cross-platform ecosystems where consistency, performance, and scalability are critical. My experience includes developing applications that share core logic across web and mobile while maintaining platform-specific optimizations where required. Let’s connect to review your feature set, user flows, and platform priorities so we can define the best architecture and execution plan. Best regards, Nikita Gupta
£18 GBP in 40 days
5.8
5.8

Hi, I’m excited to submit my proposal for your project. With over a decade of experience, I specialize in creating web, Android, and iOS applications that offer seamless cross-platform functionality. Here’s what I can deliver: - Web application with responsive design - Native Android app with optimized performance - Native iOS app tailored for smooth user experience I have extensive expertise in UI/UX design, ensuring a cohesive look and feel across all platforms. For backend integration, I’ll handle RESTful APIs and databases to ensure data synchronization. User authentication and secure in-app purchases are also key features I can implement. Please visit my portfolio at https://www.freelancer.com/u/reedsystems for more details on past projects and experiences. Looking forward to bringing your vision to life! Best, Reed
£35 GBP in 5 days
6.0
6.0

I understand you need web, Android, and iOS apps with matching features and smooth user experience across all platforms. I’ve helped clients build cohesive multi-platform apps before, syncing backend services and user authentication to ensure consistency. To make sure I fully cover your needs, could you share which backend system you’re planning to use? Also, do you require real-time data sync between platforms or is periodic update enough? From past projects, the key is building a single codebase that adapts well to each platform’s UI/UX standards while keeping features identical and integrating authentication and in-app purchases reliably. This saves time and prevents discrepancies. I’m ready to start by discussing your feature list in detail and planning how to keep everything seamless across web and mobile. Let’s get this built right.
£27 GBP in 7 days
5.6
5.6

Good day! I am ready to bring your multi-platform app vision to life with my expertise in web, Android, and iOS development. With a strong background in creating cohesive applications and a knack for UI/UX design, I am confident in delivering a seamless user experience. Here's what I will do: - Develop web, Android, and iOS apps with identical features - Ensure seamless backend integration - Implement user authentication and in-app purchase systems - Prioritize cohesive design across all platforms Looking forward to creating high-quality work for you! Regards, Iqra
£27 GBP in 40 days
5.5
5.5

⭐⭐⭐⭐⭐ ✅Hi there, hope you are doing well! I have successfully developed multi-platform apps where web, Android, and iOS versions shared an identical feature set and seamless user experience, making the app function smoothly across devices. The most important part to successfully complete this project is ensuring consistent UI/UX and seamless backend integration across all platforms. Approach: ⭕ Design a unified UI/UX that feels native on each platform. ⭕ Develop the web, Android, and iOS apps using a cross-platform framework for consistency. ⭕ Integrate user authentication and secure in-app purchase systems. ⭕ Ensure robust backend integration to synchronize data flawlessly. ⭕ Conduct thorough testing on all platforms to guarantee identical functionality. ❓Clarification questions: ❓Do you have a preferred technology stack or framework? ❓What backend systems or APIs need to be integrated? ❓Are there specific design guidelines or branding requirements? ❓What is your expected timeline for delivery? I am confident in delivering a polished, fully functional multi-platform app that meets your requirements and provides a great user experience across all devices. Best regards, Nam
£18 GBP in 23 days
5.4
5.4

Hi, I have strong experience in React, React Native, Node.js, iOS and Android development, backend APIs, and cross-platform app architecture. For this project, I can build a consistent web, iOS, and Android application with shared logic and UI alignment, handling authentication, backend integration, and in-app purchase flows in a clean and scalable way. I have real hands-on experience developing multi-platform apps with unified features and smooth UX across devices, so I can ensure everything works reliably and feels consistent for users. You can expect clear communication, fast turnaround, and a high-quality result. Best regards, Juan
£27 GBP in 40 days
5.2
5.2

As a versatile and experienced mobile app developer, I have successfully worked on numerous multi-platform projects using various frameworks, including Flutter and React Native. What sets me apart is my expertise in ensuring consistency and feature uniformity across different platforms, aligning perfectly with your project's needs. I understand the importance of seamless UI/UX design and cohesive backend integration - skills that have been my forte throughout my career. Having an extensive understanding of user authentication and in-app purchase systems, I assure you that your app will be designed with safe and convenient features for your users. My proficiency with not only Android and iOS but also web development provides me greater insights into building apps that remain identical regardless of the selected platform. Most importantly, I prioritize the quality of work and bug-free code. I will meticulously test every aspect before moving forward to ensure a smooth user experience on all platforms. With my full-time availability and a strong focus on prompt delivery, let me assure you that your project will be handled with utmost care and dexterity towards exceeding your expectations. Let's connect to further explore how my skills can contribute to your project! Thanks, Jay
£27 GBP in 40 days
5.0
5.0

Hello! I am a US-based senior software engineer with extensive experience in building and scaling production-grade software, including mobile apps. I’ve read your project description thoroughly and have a solid understanding of your needs to create web, Android, and iOS apps with identical features. With over 15 years of experience in app development, I’m well-versed in graphic design, user interface, and backend technologies. I’ve successfully completed similar projects, such as a multi-platform e-commerce app for a boutique store and a fitness tracking app that syncs data across devices. To ensure we align on your vision, could you please clarify the following questions to help me better understand the project? 1. Are there any specific features or functionalities you want to prioritize across all platforms? 2. What is your timeline for project completion, and are there any key milestones you have in mind? My approach includes clear communication, structured milestones, and proactive technical guidance. I believe that attention to detail and understanding your requirements are crucial for delivering the perfect result. If you're looking for a serious developer who pays attention to project details and can drive your vision forward, let's chat! Best, James Zappi
£50 GBP in 14 days
5.0
5.0

As a highly experienced and tech-savvy mobile and web developer, I am confident that I have the necessary skills to excel at this multi-platform app development project. With a broad range of expertise under my belt including AI, React Native, Flutter, Kotlin Multiplatform, Android/IOS, .NET, .NET Core, ReactJS, NodeJS and Angular JavaScript gives me a unique and versatile advantage to craft a cohesive application across all platforms. Client satisfaction is of the utmost importance to me and I'm confident in my ability to deliver your desired results while meeting your specified timeline. As a reliable communicator, you can be assured that I will keep you informed throughout the whole process. Don't just take my word for it, please take the time to browse through my impressive portfolio for further validation of my capabilities. Let's bring this project to life together!
£25 GBP in 40 days
5.0
5.0

As a seasoned Full-Stack Developer with 7+ years of building web, Android, and iOS applications, I believe I am uniquely qualified to bring your multi-platform app vision to life. My expertise extends beyond just proficient coding but encompasses a keen eye for UI/UX design as well as comprehensive knowledge in backend integration, user authentication and in-app purchase systems. A look at my extensive portfolio will quickly demonstrate my proven track record in creating unified multi-platforms applications. I have consistently developed cohesive solutions that deliver identical features and seamless experiences across multiple platforms your project needs. One of the key highlights in my approaches is clear communication and reliability. Whether it is providing daily progress updates, setting realistic timelines or maintaining transparency throughout the project tenure, you will always be informed and satisfied with the progress. I have built my reputation on clean documented codes that are not only testable but also provide flexibility to future developers working on your project. Additionally, I will bring an added layer of value by leveraging on my experience to guide you in making smarter technical decisions that save time and money, something that sets me apart from other developers. My track record speaks volumes: 98% of my projects ship on or before their deadline -- a stellar record I intend to maintain in your project as well.
£27 GBP in 40 days
4.3
4.3

I always give my best to fully satisfy my clients’ requirements. You can also review my profile to see my previous work and feedback. Price: $1000 Timeline: 1-2 weeks ? Hi there, I can help you create cohesive web, Android, and iOS apps with identical features across all platforms. I will ensure a seamless experience for users on all devices while maintaining a modern, user-friendly design. Here’s what I’ll bring: Proficiency in Web, Android, and iOS Development: I’ll use cross-platform technologies like React Native (for mobile) and React.js (for web), ensuring identical functionality and look across platforms. UI/UX Design Skills: Your app will have an intuitive and polished design for the best user experience on all platforms. Backend Integration: I’ll integrate all necessary APIs and ensure data synchronization across web and mobile versions. User Authentication and In-app Purchases: The app will be integrated with secure login systems and allow in-app purchases where required. I’ll provide a seamless experience from design to deployment and ensure smooth integration of all features across platforms. Looking forward to discussing more and sharing relevant portfolios! Regards, Carlos.
£18 GBP in 40 days
4.1
4.1

Hi there, I noticed you need a skilled developer to create web, Android, and iOS apps with identical features across all platforms, including backend integration, user authentication, and in app purchase systems. I have extensive experience building cross platform applications using Flutter and React Native, including a recent project where I delivered a unified app for web, iOS, and Android with shared business logic, Firebase authentication, Stripe in app purchases, and a Node.js backend. I can ensure UI/UX consistency and seamless backend integration. Let me know your app's core features and target audience. Best regards, Mobasher Reza
£27 GBP in 40 days
1.5
1.5

Cheltenham, United Kingdom
Member since Apr 17, 2026
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