Cross-Platform Mobile App Development

@infowider11

Hi, I can develop your cross-platform mobile app for iOS and Android with a clean, scalable full-stack architecture, ensuring smooth user authentication and fully functional in-app purchases. I will implement secure login (email/social if needed), integrate Apple/Google in-app purchase systems properly, and connect everything to a reliable backend so user data and transactions are safely managed and synchronized. Let’s connect and discuss your features in detail so I can share the best technical approach for your budget and timeline. Thanks

@om26er

Hello, Regarding your project i need to discuss features of the app in detail. i am mobile applications developer and i have more than 8 years of experience developing mobile apps. i have done more than 510+ projects either local or internet based. i am confident i will provide you quality work on time. Let's chat to connect


@augurstech

A Warm Hello! We are readily available to start working on this project! We are confident to provide you mobile application for iOS and Android. Based on your requirements and reference to the Curam-style experience, we understand the importance of delivering a clean, intuitive, and scalable app with secure authentication and seamless in-app purchases—within a tight timeline. Our Understanding of Your Requirements You need: * A cross-platform mobile app (iOS & Android) * Secure user authentication system * In-app purchase integration (subscriptions or one-time purchases) * A user-friendly interface inspired by the Curam app * Delivery aligned with a Beta target of end of May / June Thank you for considering our proposal. We’re confident in delivering a polished, high-performance app ready for Beta within your timeline. Sincerely, Ana

@eclairios

Hello, Your search for an experienced full-stack developer to create a robust iOS and Android mobile application ends here. I understand the critical need for secure user authentication and seamless in-app purchase integrations to deliver a comprehensive and engaging user experience. I’m Waqas from Eclairios, a professional software engineer with over 7 years of experience in app and web development. I have successfully completed 128 projects, earning a 5.0 rating from satisfied clients. I specialize in mobile apps (Android, iOS, Flutter), website development, custom APIs, and backend solutions. My goal is to deliver high-quality, scalable solutions that meet your business needs. Why hire me? ★ 100+ Projects Completed with 5-star rating. ★ 3 months of free post-launch support ★ Expertise in advanced technologies and systems Let’s connect and discuss how I can help you with your project. Best regards, Waqas

@diektech

Hi, This is Elias from Miami. I checked your project description and understand you’re looking to build a cross-platform mobile app (iOS + Android) with user authentication and in-app purchases, similar in direction to the Curam app, targeting a beta by May/June. I’ve worked on mobile apps with auth systems and payment/in-app purchase flows, so I understand the key areas around security, store compliance, and smooth UX. My approach would be to build this using Flutter or React Native for speed, with a solid backend for authentication, user data, and purchase validation (App Store/Google Play). I’d focus first on core flows, then integrate purchases, testing, and prepare for beta release. I’d be happy to go through the details and suggest the best technical approach. I have a few questions to get a better understanding: Q1 – Do you need subscriptions, one-time purchases, or both for in-app purchases? Q2 – Will you provide UI/UX designs, or should that be included in development? Q3 – What backend preference do you have (Firebase, custom API, or open to recommendation)? Looking forward to hearing from you.

@deepbansal1111

Hello, I have read your requirement to build an Android and iOS app. I can do that, and I have 8 years of experience in mobile app designing and development with a backend. I have developed more than 200 mobile apps with backend integrations, including authentication systems, subscription models, and in-app purchases. I can help you build a high-quality, user-friendly application similar to the Curam app reference, with secure user login, in-app purchase integration, scalable backend APIs, and a smooth experience across both iOS and Android. Based on your beta target of May/June, I would approach this with an MVP-first strategy so we can deliver a solid beta on time while keeping the product scalable for future growth. I have worked on full-stack mobile solutions from concept to launch and can handle design, development, testing, and deployment. I would be glad to discuss the PV details and the Curam reference further and help turn your idea into a polished product within budget.

@tangramua

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 Mobile App Development, iPhone, Android, PhoneGap, iOS Development, Full Stack Development, Mobile Development, Android 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.     

@kamran2012

This looks like a great fit, I will build your cross-platform mobile app — user authentication, in-app purchases, and core UI — using a single codebase for iOS and Android. For auth, I will integrate Firebase Authentication with social login options, and wire in RevenueCat to handle in-app purchase receipt validation across both stores — it abstracts away the differences between Apple and Google billing APIs. Questions: 1) What type of in-app purchases — subscriptions, one-time, or consumables? 2) Do you have a backend/API already, or does that need to be built as well? Looking forward to potentially working together. Thanks, Kamran

@zeeshan5121472

Hi, I can build your app for iOS and Android using Flutter for a single, high-performance codebase. I’ll handle secure user authentication and in-app purchases (Apple/Google compliant), along with a clean, user-friendly UI inspired by your reference app. Backend will be scalable and ready for growth. I can deliver a solid beta by May/June and keep everything well-structured and documented. Happy to discuss details

@n2rtechnologies

Hi there, I reviewed your cross-platform mobile app project and it's definitely something I can handle well. I noticed you're looking for iOS and Android coverage — that's exactly what we specialize in, whether through native development or frameworks like React Native. I have a couple of quick questions about your vision before we dive in. What's the primary use case, and are there any backend integrations needed? I have delivered 1500+ web and mobile projects over 14+ years — happy to share relevant examples. Thanks, Hasan

@urrehman48

Hi there, I can build the Flutter iOS and Android app with user authentication and in-app purchases — could you share more about what the app does so I can give you an accurate scope and timeline? Best Regards, Khalil U.​​​​​​​​​​​​​​​​

@asifalimzd

Hi there, I can develop your mobile application for both iOS and Android using a reliable cross-platform stack like Flutter or React Native, ensuring smooth performance, secure user authentication, and seamless in-app purchase integration. The focus will be on building a clean, user-friendly experience backed by a scalable backend for future growth. I have experience delivering full-stack mobile apps with authentication flows, payment systems, and store-ready builds, and I can guide the project from development to deployment while staying within budget. Kindly send me a message to discuss more. Thanks

@XpertLabIndia

Hello, as a highly reputable and award-winning IT company, we want to be your go-to full-stack developer for your mobile app needs. From designing and developing websites, web applications to mobile apps tailored for both iOS and Android platforms, we have it all covered. We are skilled in authentication mechanisms as well as seamless integration of in-app purchases, which aligns perfectly with your project requirements. We are certain we can do the same for you. Choose us for a quality-driven delivery complemented with unyielding maintenance & support. Let's get started on creating an app that meets your needs and exceeds your expectations :) Regards, Rohan

@mobiappsoftware

Hello, I will develop your MOBILE APPLICATION for Android and IOS both platforms with Web admin panel. I am Tulsiram. I have 10 years of experience working as Native and Crossplatform mobile application developer. I am understood your requirements. I am glad if we are working together. If you interested then let's connect. I will provide you Daily updates ,source code after development completed, 1 Year maintenance Support in following Steps: I will available daily 10-12 hours in Working days for you. I will provide you regular updates according to which modules we will decided. After approval each module by you then i will provide your complete source code of your project and will shift on your Domain. Thanks

@ciss26

Hello, I hope you are doing well. I understand that you are looking to build a MOBILE APPLICATION, and I would be happy to help. I have extensive experience in designing and developing applications and have successfully delivered many projects. What I offer: -Development using the latest technologies -Daily project updates and clear communication -On-time delivery within the agreed timeline -Complete source code provided after project completion -One year of support for the developed work -10+ years of experience in web and app development -Fully responsive, fast-loading, and SEO-friendly design -A powerful super admin panel to manage the entire system Please feel free to initiate a chat so we can discuss your requirements in detail. Thank you and regards, Dheeraj K.

@techplusintl

Hi, To create a mobile application for both iOS and Android, I'll develop a user-friendly app with authentication and in-app purchase features. This will include: - User authentication setup - In-app purchase integration - Cross-platform compatibility - Ensuring high-quality UI/UX design - Thorough testing for both platforms I will follow a structured approach using React Native for development and Node.js for backend services, ensuring smooth functionality across devices. Ready to start once you provide the necessary access and details. Thanks!

@mahig47

Hello! As per your project post, you’re looking to build a cross platform mobile application for iOS and Android with secure user authentication and in app purchase functionality. The goal is to create a stable, user friendly mobile app where users can securely sign in, access core features, and complete purchases smoothly within the app experience. My focus will be on delivering a complete cross platform mobile solution, featuring: secure authentication system with user registration, login, and session management, in app purchase integration for both iOS and Android following platform specific guidelines, backend API integration for managing users, purchases, and app data, and a clean, responsive mobile UI optimized for performance and usability across devices. The platform will ensure secure transactions, smooth user flow, and consistent performance on both operating systems. I specialize in building scalable mobile applications using Flutter or React Native combined with secure backend systems such as Node.js or Firebase. My focus will be on creating production ready apps with strong attention to security, performance, and seamless payment integration. Let’s connect to review your app idea, user flow, and monetization model so we can define the best technical approach and development roadmap. Best regards, Nikita Gupta.

@kishanbwts

You need a mobile app that works smoothly on iOS and Android, with secure user logins and seamless in-app purchases. I’ve helped a client in e-commerce get this right by integrating reliable authentication and payment flows that kept users engaged and reduced drop-offs. For your app, I suggest starting with a framework like React Native or Flutter to handle both platforms efficiently. Have you considered which payment processors you want to support? This helps me plan the integration so users complete purchases without hiccups. Also, will authentication rely on social logins, email/password, or something else? Setting that up correctly upfront prevents user frustration later. I can get these core features working solidly and deliver a smooth, user-friendly app on schedule and budget. Ready to jump in and outline the next steps.

@abhishek060

Hello, I can build your mobile app end-to-end with a scalable architecture and smooth cross-platform performance (iOS & Android). How I’ll approach it: • Secure user authentication (email/social as required) • In-app purchase integration (fully compliant with Apple & Google guidelines) • Clean, intuitive UI for a smooth user experience • Scalable backend for performance and future growth Tech: Flutter / React Native + Node/Firebase backend Timeline: ~3–5 weeks (based on final scope) I focus on delivering stable, production-ready apps that pass store reviews and are easy to maintain. Happy to review your requirements and start immediately. Best regards, Abhishek