Cross-Platform App Development

@Microlent

Hello, I am Dr. Rajesh Rolen, PhD in Computer Science & Engineering, with experience of over 20+ years in iPhone, UI / User Interface As a preferred freelancer in the top 1%, I have done 400+ projects here on freelancer.com, I have 4.9 ratings out of 5 on average, which showcases my quality of work and timely delivery. Key Highlights: - Free Hosting Support on the Cloud or any desired platform. - Free 3 months of post-delivery support to ensure that our client doesn’t face any challenges after the launch of the project. - Free Dedicated tester on projects to ensure quality delivery, so clients don’t need to act as a tester. - 10+ Years experience UI/UX team to ensure intuitive UI. Portfolio: https://www.freelancer.com/u/Microlent Please open the chat and send me a message, so we can have a more detailed discussion about the project to give you the project timeline and cost. Thank you for considering my services. I look forward to engaging in a productive conversation and understanding how I can be of assistance in bringing your project to life. Regards Rajesh Rolen

@diektech

Hi — Elias here from Miami. I see you’re looking to create a mobile application for iOS and Android. The primary goal seems to be delivering a seamless user experience across platforms while ensuring the app is scalable and maintainable. The real technical challenge often lies in managing the differences between the two platforms. What usually matters most here is ensuring consistent performance and user experience, especially with UI elements and backend integrations. The tricky part is usually around handling state management effectively and ensuring smooth interactions with APIs. I would approach this by structuring the app with a shared codebase where feasible, while still allowing for platform-specific customizations. This not only simplifies maintenance but also makes future updates and expansions easier. My experience with similar cross-platform apps has shown that a solid architecture upfront can prevent many headaches later. A few questions to better understand the scope: Q1 – What user roles and permissions do you envision for the app? Q2 – Are there any specific integrations or APIs you plan to use? Q3 – What are your expectations regarding scaling in terms of user base? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.

@om26er

Hello, Regarding your project, i would like to discuss the app features in detail to better understand your requirements. i am a mobile applications developer and i have more than 8 years of experience developing mobile applications with backend services. i have developed many Business Solutions from scratch to Stores ready applications. i have completed more than 550 projects. i have live sample apps for you. i am super confident i will provide you best quality software services on time and on budget. Let's chat to proceed.

@shubhamshrimal7

Hello, Greetings Hope you are doing well. I am a Mobile Application developer with over 5 years of experience. I am confident in my ability and skills to develop high-quality Mobile apps and would like to work on your project. I will complete the work as per your requirements. I want to discuss more this project to prepare the final concept. So let’s discuss this in detail over chat then will make plans to start work on it. Waiting for your earliest reply. Thanks. Shubham

@corpmember29

Hello, {{{ I HAVE CREATED SIMILAR CROSS-PLATFORM MOBILE APPS BEFORE AND I CAN SHOW YOU }}} **** You may follow the project's development using the tracker. I am available for work 40 -45 hours a week **** I have carefully reviewed your requirements and understand that you need a reliable iOS and Android application with a clean UI/UX, backend integration and smooth store deployment. I have 11+ years of experience in software development and can handle the complete application lifecycle, including UI implementation, API/backend integration, authentication, testing, performance optimization and App Store/Google Play submission. Depending on your requirements, I can use Flutter or React Native to maintain a scalable single codebase while delivering a native-quality experience on both platforms. I WILL PROVIDE 2 YEARS OF FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE. We will work with Agile methodology and I will assist from development through testing and publishing on both stores. I eagerly await your positive response. Thanks, Christina

@rajat07me

Being part of **360 Elevate**, a one-stop digital agency, means that I can bring a wealth of iOS, Android, and cross-platform app development experience to your project. Our journey has its roots in 2010, over the years we've grown into a team of over 60 professionals, covering all areas of digital services. We specialize in mobile app development using Swift, Kotlin's and Javascript - key languages you've specified - ensuring smooth performance and optimal user experiences. Our previous projects span across various industries demonstrating our proficiency in backend integration and API development. And should we come across any problems along the way—I’m confident—we can find a solution. Our commitment extends to providing budget-friendly solutions without compromising quality. In fact, it's in line with our value-driven work ethos. As an added advantage, we have direct knowledge of app store submission processes. Rest assured your project is secure hands as we're experienced with producing high-quality results even with tight budget constraints. Allow us to put your vision into apps that drive your product/service development initiative forward. With our comprehensive range of skills, industry experience, digital partnership approach, and teams' obsession for problem-solving, we believe there's no challenge too large or complex for us to tackle together. Let’s elevate your project together.

@rbtech1984

Hello!! A reliable cross-platform application can be developed with a consistent, responsive experience across iOS and Android, supported by clean APIs and a scalable backend. * What are the main features required for the first version? * Do you already have the UI design or wireframes? * Will the app need to connect with an existing API or database? The solution will include cross-platform development, responsive screens, secure authentication, API integration, database connectivity, push notifications where required, testing, and performance optimization. Relevant Flutter, React Native, API, and full-stack application projects have been completed before, creating smooth mobile experiences that are easy to use and maintain. Let us discuss your core workflow and start planning the first version. Best regards Farhin B

@XpertLabIndia

Hi, I’d be happy to help develop your mobile application for both iOS and Android. I have experience building mobile apps with clean, user-friendly interfaces, backend/API integrations, and reliable functionality across different devices and screen sizes. My approach would be to first understand the product goals and user flow, then finalize the UI/UX, develop the core app features, integrate the required backend APIs, thoroughly test the application, and prepare it for App Store and Google Play submission. I can also share relevant previous mobile app work so you can evaluate the quality and approach before we begin. The mentioned cost is only a placeholder for now and can be finalized after reviewing the complete requirements and feature scope. Looking forward to discussing the project with you. Thank you Rohan

@deependra4113

Here’s a concise, customized proposal that stays well under 1,500 characters: Hi, I’d be glad to help build your mobile application for both iOS and Android. With 9+ years of mobile development experience, I can support the project from planning and UI implementation through backend/API integration, testing, and app store submission. Based on your requirements, I would recommend Flutter for a single, maintainable codebase while delivering a smooth experience on both platforms. I can also work with native iOS technologies such as Swift/SwiftUI where needed. My approach would be to first understand your product goals and target users, then define the app structure and user flows before developing the UI and integrating the required APIs/backend. Throughout development, I focus on clean, maintainable code, responsive UI/UX, and thorough testing. I have experience with Flutter, Swift, SwiftUI, APIs, Firebase, authentication, and production app deployment. I’m also comfortable working within an agreed scope and budget. I can share relevant examples of previous mobile applications and discuss the best technical approach once I understand your specific product requirements. I’d be happy to discuss your idea and help turn it into a polished mobile application.

@HamparProd

Hi, I can take this from requirements through cross-platform iOS/Android development, backend integration, testing and store submission. For most product/service applications, I’d recommend Flutter so both platforms share a maintainable codebase while still providing responsive, native-feeling UI. I’d structure the app into reusable feature modules with a clean API/service layer, secure authentication/storage where required, and platform-specific integrations isolated from the core application. I’d begin by reviewing your feature requirements, user flows, existing designs and backend/API status. From there I can define the architecture and milestones before development, avoiding unnecessary rework as the product evolves. I can also handle responsive UI implementation, API integration, device testing, release builds, and preparation for Apple App Store and Google Play submission.

@ranjika08

With over a decade of experience, I am confident that I am the ideal candidate for your cross-platform app development project. My expertise in website and software development, coupled with my UI/UX design skills, make me well-suited to tackle every aspect of this project. In terms of mobile app development, I have created numerous applications for both Android and iOS platforms using relevant programming languages such as Kotlin and Swift. This includes developing apps for start-ups and big businesses alike, so I understand the nuances of working within budget constraints without sacrificing quality. Furthermore, my proficiency in backend integration and API development will ensure seamless connectivity between your app and any external systems you may need. As an added bonus, I am familiar with the intricate processes involved in app store submission. Over the years, I have honed my problem-solving skills to deliver efficient and effective solutions. If you hire me for this project, you can expect a top-notch cross-platform app that not only meets your requirements but also exceeds your expectations.

@melikatfz

Hi there, Creating a mobile application for both iOS and Android can be challenging due to platform differences, but with my expertise in cross-platform development and strong UI/UX design skills, I ensure a seamless experience for both. Leveraging Swift, Kotlin, and JavaScript, I can build robust and engaging apps that meet your service development needs. Here are my questions: Could you specify any particular features or functionalities that are critical for the app? Is there an existing API or will one need to be developed from scratch? Let's discuss your project now!

@Hubready

Hello!, This is James from Hollywood... I read your post carefully, and the main pain point here is getting a cross-platform app that feels native on both iOS and Android without wasting time on messy UI decisions or rework. I can help you build this the right way, with a clean UI, solid structure, and a step-by-step process so you get something stable and easy to grow. My approach would be: 1. Clarify the core app flow and must-have screens 2. Design the UI for mobile first, keeping both platforms in mind 3. Build the app in a cross-platform stack with reusable components 4. Test the experience on real devices and polish anything weak before delivery I’m very detail-focused, so I’ll pay attention to the small things that usually make or break app quality, especially UI consistency and user flow. A few relevant examples of work I’ve handled: - a booking app for a local fitness studio - a delivery tracker for a small logistics company - a customer portal for a healthcare startup - an internal field-reporting app for a service team Quick questions so I can scope this properly: 1. What is the main purpose of the app, and what should users be able to do first? 2. Do you already have the UI design, or should I help shape that too? 3. Do you want this built in React Native or Flutter, or are you open to my recommendation? If you want, I can help you narrow the scope fast and get the first version moving without unnecessary back and forth.

@mahig47

Hello, This cross-platform app needs more than simply making the same screens available on iOS and Android it needs a consistent, polished experience while keeping the underlying architecture reliable and maintainable. I’ve worked on cross-platform mobile applications with custom UI/UX, backend integrations, APIs, authentication, and production deployment, so I can take ownership from development through store submission. I can build the application using Flutter or React Native based on the project’s functional needs, with responsive interfaces tailored to both platforms rather than treating mobile as a scaled-down web experience. I’ll integrate the required backend/API services, handle application state, error handling, permissions, and ensure the codebase remains clean and scalable for future features. I can also manage testing across iOS and Android, prepare production builds, resolve platform-specific issues, and support the App Store and Google Play submission process. Once I understand the product/service workflow and the expected user journey, I can recommend the most suitable architecture and development approach. Regards, Nikita Gupta

@Proswift

Hi, You need a cross-platform iOS + Android app with solid UI, backend/API integration, and store submission — part of a broader product initiative. Approach: React Native (one codebase, both stores) or native Swift + Kotlin if you need maximum platform polish. Start from your product brief → core screens + API → test on devices → Play + App Store. Experience: merchant/distributor and field apps (orders, profiles, maps, auth) — portfolio on my Upwork profile. Rate: $15 CAD/hr What does the app do (main user flow)? That lets me outline milestones and a realistic budget. Best regards

@sharjeelrb

Hello, I can develop your iOS & Android mobile application using Flutter/React Native with a clean, responsive UI, backend/API integration, testing, and store deployment. I have experience with cross-platform apps, REST APIs, Firebase, authentication, UI/UX, and App Store/Google Play submission. I can review your requirements, propose the best architecture, and start immediately.

@giaphung2k1

Hello I specialize in building high-performance, cross-platform apps using Flutter and React Native, ensuring a seamless experience across both iOS and Android. My approach focuses on clean, scalable architecture and intuitive UI/UX design, fully integrated with robust backend APIs. I have a proven track record of navigating the entire development lifecycle, from initial concept to successful App Store and Play Store launches. Would you like to walk me through your core features so we can finalize the technical roadmap? Best regards, Giáp Văn Hưng

@shubhi8982

With my strong background in cross-platform app development, I am well-equipped to deliver the product you envision. My comprehensive skills in languages like Swift, Kotlin, and JavaScript give me an edge in making apps that perform flawlessly on both iOS and Android. Moreover, my proficiency in backend integration and API development ensures seamless connectivity and system operation, a critical aspect your project requires. Another advantage is my knack for simple yet elegant UI/UX design. Given that this app is part of a product/service development initiative, I understand the importance of creating a user experience that not only matches your vision but also aligns with your brand's identity. My solutions-oriented approach and strong problem-solving skills enable me to effectively work within budget constraints and still deliver high-quality results. Lastly, I commit to offering end-to-end handling of the project, including app store submission processes. You can expect open lines of communication and dedicated support from me throughout our collaboration. At the end of it all, my main goal is to turn your ideas into reality with precision, creativity, and efficiency! Let's discuss further how I can help bring your vision to life.

@indiasofttel

I am expert full stack developer over 12 years of experience in mobile and web application development. I reveiwed the rpoject description and it's looking good for me that I have huge expertise in Native & hybrid mobile application development. In terms of Native Good to use Kotlin and Hybrid I am expert in React Native & flutter. I would be happy to disucss and I can move on. Regards NItesh