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Necesito desarrollar una aplicación que funcione sin problemas tanto en iOS como en Android. Ya tengo la idea principal, pero requiero a alguien que la convierta en un producto real y publicable en ambas tiendas. Qué espero del trabajo: • Diseño y desarrollo de la interfaz adaptable a distintos tamaños de pantalla. • Programación de funciones esenciales: registro/inicio de sesión, base de datos en la nube, notificaciones push y consumo de API REST. • Pruebas exhaustivas, corrección de errores y optimización de rendimiento en ambos sistemas operativos. • Preparación y subida de las versiones finales a App Store y Google Play. • Entrega del código fuente bien comentado y la documentación técnica básica. Me resulta útil que domines algún framework multiplataforma —por ejemplo, Flutter o React Native—, aunque estoy abierto a tu recomendación si demuestras ventajas claras. Valoraré especialmente la responsabilidad, la comunicación fluida y la experiencia comprobable lanzando apps similares. Cuando envíes tu propuesta, comparte enlaces a trabajos anteriores y menciona el enfoque técnico que usarías.
Project ID: 40718382
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95 freelancers are bidding on average $66 USD/hour for this job

Hi there, I have extensive experience building production-ready mobile applications with Flutter, iOS, and Android, and I can help turn your idea into a reliable app ready for both stores. I understand you need more than UI development: the goal is a complete mobile product with smooth user experience, secure authentication, cloud data, push notifications, API integration, testing, and proper release preparation. My approach is to keep the architecture practical and maintainable, using Flutter for efficient cross-platform development while ensuring each platform performs well. I can handle the full development cycle, from interface implementation and backend integration to testing, store submission, source delivery, and technical documentation. I have launched similar applications and can provide clear communication throughout the process. I would be happy to discuss your idea, review the requirements, and suggest the most suitable implementation approach.
$50 USD in 30 days
7.9
7.9

Hola, Saludos Espero que estés bien. Soy un desarrollador de aplicaciones móviles con más de 5 años de experiencia. Confío en mi capacidad y habilidades para desarrollar aplicaciones móviles de alta calidad y me gustaría trabajar en su proyecto. Completaré el trabajo según sus requisitos. Quiero discutir más este proyecto para preparar el concepto final. Así que analicemos esto en detalle en el chat y luego haremos planes para comenzar a trabajar en ello. Esperando su respuesta más temprana. Gracias. Shubham
$50 USD in 40 days
8.0
8.0

I propose to develop your app idea into a seamless product for both iOS and Android using Flutter. This framework ensures native performance and adaptability across different screens. I will integrate essential features like user registration, database management, notifications, and API consumption. After rigorous testing, I will handle the submission to App Store and Google Play, providing you with source code and documentation. My experience in launching similar apps reflects my commitment to excellence and effective communication. Let's build a long-term partnership for your project's success.
$50 USD in 5 days
7.1
7.1

As an experienced AI & Embedded Systems Engineer, I have a strong command of not only iOS and Android development but also cross-platform app development using reputable frameworks such as Flutter and React Native. I bring your app idea to life while ensuring it functions seamlessly across different screen sizes. Moreover, my understanding and expertise in creating essential features like registration/login, database integration, push notifications & REST API consumption align perfectly with your requirements. One major advantage of hiring me includes my comprehensive testing methodologies, and my knack for ironing out bugs and optimizing performance for both iOS and Android platforms. Having launched numerous apps previously, my capacity for responsibility and effective communication will keep you well-informed about the project progress and facilitate smooth collaboration. In addition to delivering the complete code along with well-commented documentation in timely manner, I offer a unique synergy between mobile app development capabilities and IoT backend skills that could amplify the impact of your app. As an added bonus, I provide my clients with valuable end-to-end solutions which makes me the ideal candidate for this multi-faceted project. Rest assured, engaging me for this task guarantees not just meeting your expectations, but exceeding them!
$50 USD in 40 days
6.6
6.6

Hola, Mateo here from Toronto, I can turn your idea into a production-ready iOS and Android app with a clean, responsive interface and a reliable backend integration. I have experience building mobile applications with React Native, API integrations, authentication, cloud data, and responsive UI across different screen sizes. My approach would cover the complete process: * React Native app for iOS and Android * Secure registration and login * Cloud database and REST API integration * Push notifications * Responsive UI for different devices * Testing and performance optimization on both platforms * Bug fixing and final production preparation * App Store and Google Play submission * Clean, well-structured source code and technical documentation I would first review your core idea and API/backend requirements, then structure the app so it remains easy to maintain and extend with future features. I can also share relevant previous mobile work and explain the technical decisions behind it. I value clear communication and will keep you updated throughout development.
$50 USD in 40 days
6.3
6.3

Hola, He leído sus requisitos y estoy segura de que podré ayudarle. Por favor, envíeme un mensaje para que podamos conversar sobre los detalles técnicos. Cuento con más de 9 años de experiencia combinada en desarrollo de aplicaciones móviles, sitios web, aplicaciones de escritorio, integración de API de inteligencia artificial de terceros, AR/VR, chatbots, blockchain y criptomonedas, CRM y ERP, desarrollo de videojuegos y otros tipos de desarrollo de software. Poseo experiencia en desarrollo nativo (Android con Java y Kotlin; iOS con Swift), desarrollo híbrido multiplataforma (Flutter/Dart y React Native) y desarrollo web y backend (React.js, Node.js y Python/Django). Le invito a considerar mi perfil e iniciar un chat para hablar más a fondo sobre el proyecto. Saludos, Anju
$50 USD in 40 days
6.6
6.6

Hi there, Hope you are doing well I’d love to help turn your app idea into a production-ready mobile application for both iOS and Android. At Cyber Impulse Software Solutions Pvt. Ltd., we have experience developing scalable, user-friendly mobile applications with secure authentication, cloud databases, REST APIs, push notifications, and App Store/Google Play deployment. What I’ll Deliver Responsive and modern UI for different screen sizes Secure registration and login Cloud database integration REST API integration Push notifications Smooth navigation and user experience Performance optimization for iOS & Android Comprehensive testing and bug fixing App Store & Google Play submission Clean, well-structured and commented source code Technical documentation and deployment guidance Recommended Tech Stack Mobile: Flutter Backend/API: Node.js / NestJS Database: PostgreSQL / MySQL Notifications: Firebase Cloud Messaging (FCM) & APNs Authentication: JWT / Secure Token Authentication Cloud: AWS / Firebase API: RESTful APIs
$50 USD in 40 days
7.0
7.0

Hi there, We understand you're looking to develop a cross-platform mobile app that runs seamlessly on both iOS and Android, with features like adaptable interface design, registration/login functionality, cloud database integration, push notifications, and REST API consumption. At Webbook Studio, we have experience with cross-platform frameworks like React Native and Flutter, having developed apps such as a music voting mobile app using React Native and a furniture store mobile shopping app using Flutter. Our team will ensure extensive testing, bug fixes, and performance optimization on both operating systems, followed by preparation and uploading of the final versions to the App Store and Google Play. Can you tell us more about your expected timeline for this project and what kind of cloud database you envision integrating? Feel free to message us to discuss the details! — Webbook Studio
$50 USD in 40 days
6.1
6.1

Hello Sir, I have already worked on similar types of website and software development projects and I am confident that I can successfully handle your project. I am a full-time freelancer with **17+ years of experience** in web development, software development, automation, and API integrations. My expertise includes: * Android app development * ASP.NET C# web and software development * Python automation and web scraping (Amazon, Instagram, Facebook, Google Maps, LinkedIn, Telegram, and other custom scraping solutions) * JavaScript, jQuery, AJAX, Bootstrap, HTML5 * Microsoft SQL Server database development * Payment gateway integration * SMS, Email, Banking, Financial, and Insurance API integration * Custom automation bots and workflow automation software I focus on delivering **high-quality, scalable, and reliable solutions** with clean code and long-term support. Please contact me in private chat so we can discuss your requirements in detail. I can also show you a **demo of similar projects** I have completed. Looking forward to working with you. Thanks & Regards
$50 USD in 8 days
5.6
5.6

Hi, Building a cross-platform mobile app requires careful attention to user experience consistency and efficient API integration across iOS and Android. The main technical risk is ensuring reliable synchronization and data consistency between the mobile frontends and backend services. While my background is in AI-driven backend systems and scalable API design, I have led projects with complex ingestion and orchestration pipelines that inform robust API architecture, which is critical for mobile app reliability. I typically design systems by separating frontend presentation from backend data orchestration so each can evolve independently and scale as needed. Early validation of data flow and offline behavior is essential to avoid user experience issues. Ensuring stable API endpoints with proper error handling and retries will reduce app crashes and improve user retention. I can start by outlining the API architecture and data synchronization strategy to align mobile and backend components effectively. Clifton
$50 USD in 40 days
5.6
5.6

Hola: Puedo convertir tu idea en una aplicación multiplataforma lista para publicar en iOS y Android, priorizando estabilidad, rendimiento y una experiencia coherente en distintos tamaños de pantalla. Propongo trabajar con Flutter para mantener una base de código eficiente y facilitar la evolución del producto. Implementaría el flujo de registro e inicio de sesión, integración con base de datos en la nube, notificaciones push y consumo de APIs REST, con una arquitectura clara y preparada para futuras funcionalidades. El proceso incluiría definición técnica, desarrollo incremental, pruebas en dispositivos y simuladores, corrección de errores, optimización y preparación de los entregables para App Store y Google Play. También entregaré el código fuente organizado, comentarios útiles y documentación técnica básica para que el proyecto sea mantenible. Mantendré una comunicación constante, con avances verificables y validaciones frecuentes para reducir riesgos antes del lanzamiento. Puedo compartir ejemplos relevantes de aplicaciones publicadas y detallar el enfoque técnico según las características concretas de tu idea. Quedo atento para comenzar con una primera planificación del producto y su arquitectura.
$50 USD in 41 days
5.2
5.2

Hola Publiqué apps propias en App Store y Google Play, incluidas dos tiendas de moda en Portugal (Lindonas y O Gangas), así que conozco el camino completo: desarrollo, pruebas, revisión de Apple y publicación. Enfoque técnico: Flutter, un solo código para iOS y Android con rendimiento nativo. Backend con API REST propia (Laravel) o Firebase según tu caso, autenticación segura, base de datos en la nube y push con Firebase Cloud Messaging. UI adaptable a todos los tamaños de pantalla, probada en dispositivos reales de ambos sistemas. Entrego código fuente comentado, documentación técnica y las apps publicadas en ambas tiendas bajo tus cuentas de desarrollador. Para cotizarte en serio necesito saber qué hace la app: ¿cuáles son las 3 o 4 pantallas principales y qué hace el usuario en ellas? ¿Hay pagos, chat o mapas? ¿Tenés diseño o parto de cero? Contame la idea y te paso alcance, plazo y precio cerrados. Te dejo enlaces a trabajos anteriores en mi perfil. Saludos,
$50 USD in 40 days
4.8
4.8

I understand you need a robust, cross-platform mobile app for iOS and Android, similar to how many successful apps leverage a single codebase for efficient development and consistent user experience. My expertise lies in delivering exactly that, ensuring your idea becomes a polished, publishable product. I propose using React Native for its proven ability to create native-feeling applications from a single JavaScript codebase. This allows for rapid development and maintenance across both platforms. My approach includes architecting a scalable cloud database solution (e.g., Firebase Firestore or AWS DynamoDB), integrating push notifications via Firebase Cloud Messaging, and building a clean, RESTful API client. UI will be designed responsively using Flexbox and styled components, ensuring adaptability across various screen sizes. Rigorous testing, including unit, integration, and end-to-end tests, will be conducted on both iOS and Android simulators and devices to guarantee stability and performance. How do you envision the initial user onboarding flow, and are there any specific third-party APIs you anticipate integrating beyond the core features? I'm ready to discuss the technical roadmap and provide a detailed timeline.
$50 USD in 7 days
4.3
4.3

With a proven track record in successfully developing and launching apps on both iOS and Android platforms, I would be an ideal fit for your project. I am an expert in multi-platform frameworks such as React Native and have experience working with other cross-platform technologies too. My expertise delves deeply into every aspect of app development - from designing adaptable interfaces, programming core functionalities like registration/login, cloud database integration, push notifications, API consumption to conducting exhaustive testing, troubleshooting, and optimizing performance. We will work closely together to mold your idea into a tangible product that adheres to your vision and objectives. Not only will I ensure that the final code is robust and well-commented, but I'll also deliver essential technical documentation along with uploading the final versions to the App Store and Google Play. A seamless communication line, knack for solving problems promptly, undeniable responsibility paired with my extensive background in Full-Stack Development will amalgamate perfectly towards sleekly executing your project. Choosing me means partnering with someone who not only has the technical chops but is also genuinely invested in adding value to your journey. Let's transform your idea into a beautiful reality!
$50 USD in 40 days
4.4
4.4

==== Hi - Manh here ==== "MULTIPLATFORM IOS + ANDROID APP" - you need one maintainable app that turns the existing idea into a tested, store-ready product on both platforms. I’d use Flutter for a shared iOS/Android codebase, with a clean API layer for REST services, cloud database, authentication, and push notifications. This keeps both platforms consistent while reducing duplicated development. I’ll build responsive screens, test the key flows on both OSs, handle performance issues, prepare release builds, and provide the source code plus technical documentation. Store submission will be included in the delivery flow. Do you already have the REST API and cloud backend defined, or should those be designed as part of the project? Looking forward to work with you.
$50 USD in 40 days
4.5
4.5

Hola, "App Multiplataforma Publicable" - convertir la idea en una app estable para iOS y Android con una base de codigo mantenible. Puedo desarrollar la app con React Native, incluyendo registro e inicio de sesion, base de datos en la nube, notificaciones push, consumo de APIs REST, interfaces adaptables y pruebas en ambas plataformas. Tambien puedo preparar los builds finales para App Store y Google Play, junto con el codigo fuente y documentacion tecnica. Mi experiencia confirmada incluye React Native, Flutter, Expo, iOS, Android, APIs REST, Firebase, bases de datos y desarrollo full-stack. Para mantener una sola base de codigo y reducir diferencias entre plataformas, primero definiria la estructura de navegacion, autenticacion y datos antes de implementar las funciones principales. Que funciones especificas debe incluir la primera version y ya tienes seleccionados el backend/cloud y el diseno inicial? Looking forward to working with you. Artur Gizycki
$50 USD in 40 days
4.3
4.3

I understand you need a cross-platform mobile application for iOS and Android with adaptive UI, authentication, cloud database, notifications, and API integration. With my 5+ years of experience in full-stack development, I'll use React Native to build a robust solution that works seamlessly across both platforms. My approach focuses on creating a responsive interface, implementing secure authentication with backend services in Python/Django, setting up cloud infrastructure, and ensuring optimal performance through thorough testing. I'll deliver well-commented code and documentation to facilitate future maintenance. I've successfully completed similar projects with attention to user experience and technical requirements. Let's discuss your vision in more detail to ensure we align on the technical approach and timeline.
$50 USD in 7 days
3.6
3.6

Lo más importante aquí no es solo “crear una app”, sino convertir tu idea en un producto que funcione bien en móviles distintos, consuma la API sin fallos y quede listo para aprobación en ambas tiendas. En este tipo de proyectos, los retrasos casi siempre vienen por detalles de arquitectura, pruebas insuficientes o diferencias entre Android e iOS, así que empezaría definiendo bien stack, flujos y dependencias antes de avanzar al build completo. Tengo experiencia con apps multiplataforma que incluyen registro/login, cloud database, notificaciones push y conexión con servicios externos por REST. Suelo inclinarme por Flutter para este escenario porque permite una UI muy consistente entre dispositivos y un proceso de mantenimiento más limpio, especialmente cuando hay varias pantallas y lógica compartida. Si quieres, también puedo ayudarte a dejar la estructura lista para futuras versiones sin rehacer la base. - ¿Ya cuentas con diseño visual, branding o habría que plantear también la línea UI? - ¿La API REST ya existe con documentación, o habría que definir endpoints pendientes? - ¿Necesitas soporte para login social además de email/contraseña?
$50 USD in 40 days
3.6
3.6

Hola, he revisado tus requisitos y el objetivo real es convertir tu idea en una app multiplataforma estable y lista para publicar, manteniendo una experiencia consistente en iOS y Android desde el inicio. Usaría Flutter para compartir la mayor parte del código y mantener una base sencilla de mantener. Implementaría la UI responsive, autenticación, base de datos cloud, notificaciones push y APIs REST, con pruebas en ambos sistemas, optimización y preparación de las versiones finales para App Store y Google Play. También entregaré el código fuente y la documentación técnica necesaria para futuras actualizaciones. Quick questions: Q1. ¿Ya tienes definidos los diseños de las pantallas principales o debemos crear también el diseño UI? Q2. ¿Ya tienes seleccionados el backend cloud y las APIs REST que utilizará la aplicación? Estas preguntas ayudan a definir el alcance inicial y las dependencias técnicas antes de comenzar. Puedo llevar la aplicación desde la idea y desarrollo hasta builds probadas y listas para publicación, manteniendo una arquitectura preparada para futuras funciones. Fernando Garcia
$50 USD in 40 days
2.9
2.9

Hi, We can turn your app idea into a polished, fully functional product for both iOS and Android, including development, testing and app-store publishing. Recommended Approach We recommend Flutter or React Native for a shared codebase, faster development and consistent performance across both platforms. The final choice will depend on your app’s features and future scalability. Scope Responsive UI/UX for different screen sizes Registration, login and secure authentication Cloud database and REST API integration Push notifications App navigation and core functionality Performance optimization and device testing Bug fixing and final quality assurance App Store and Google Play preparation and submission Well-commented source code and technical documentation Development Process Requirement discovery and UI/UX planning App architecture and backend setup Core feature development API, database and notification integration Testing on real iOS and Android devices Store submission, deployment and handover Estimated timeline: 8–14 weeks We provide regular progress updates, milestone-based delivery and post-launch support. Relevant mobile app examples and technical details can be shared during discussion. Regards, Mohit
$50 USD in 40 days
1.4
1.4

Pelaya, Colombia
Member since Sep 18, 2026
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