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I am planning a professional mobile app that must run seamlessly on both iOS and Android from the very first release. The core build has three non-negotiable features: secure user authentication, reliable in-app purchases, and real-time push notifications. For the interface, I want a balanced mix—eye-catching custom screens where brand impact matters, supported by the standard UI elements users already know and trust. I’m happy to discuss whether you prefer Flutter, React Native, Kotlin/Swift, or another approach, as long as performance and store compliance remain top priorities. Deliverables I expect • Full source code with clear documentation • Tested builds ready for App Store and Google Play submission • Basic post-launch support to iron out any critical bugs If this scope aligns with your expertise, let’s talk through milestones and start dates.
Project ID: 40684255
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330 freelancers are bidding on average $481 AUD for this job

Hi there, Jas this side from Logictrix and I am ready to work on your app with my team and with a promise for long term support in fairly low cost. Please just give me your few minutes for the chat so that we can discuss all the important points about project as well as we can clarify any queries from both side to go ahead further for final agreement. We are expert in AI development and we used many AI platforms like openAI, Freepik, Antigravity, Cursor etc for App development and other AI work. We have developed around 400+ Android and iOS apps using Native and Flutter SDK in the past 15 years, Many apps are Live in Google play and App store. We will share our detailed portfolio over the Chat once we connect. Looking forward to your reply... Thanks and Regards Jas
$500 AUD in 7 days
9.7
9.7

Launching on both iOS and Android from day one makes the architecture choice important, especially when authentication, in-app purchases and push notifications are core requirements. I would recommend a cross-platform approach such as Flutter to maintain a single codebase while still delivering polished custom brand screens and familiar native interactions where they improve usability. For purchases, I would implement the flow with proper App Store and Google Play compliance, including purchase state handling and restoration where applicable. Push notifications would also be designed around foreground/background behaviour and deep linking rather than treated as a basic add-on. Before finalising milestones, I would first map the main user journey and understand what users will actually purchase, as this directly affects both backend architecture and store compliance. I can handle the development through testing and production-ready builds, with clean source code and documentation for future maintenance. Microlent Systems Portfolio: https://www.freelancer.com/portfolio-items/11539740-microlent-systems-portfolio Could you share a brief overview of the app's main functionality and the expected user flow after login? That would allow me to suggest a practical architecture and milestone plan. Jenifer
$500 AUD in 10 days
9.4
9.4

Hi, I’d be interested in working on your mobile app. I have experience building cross-platform applications for both iOS and Android, with a strong focus on performance, security, and smooth user experience. Your core requirements—secure authentication, in-app purchases, and real-time push notifications—can be implemented with proper platform-specific handling to ensure reliability and App Store/Google Play compliance. For the technology, I’d recommend Flutter or React Native depending on the final requirements. Both allow us to build a shared codebase while still using native capabilities where needed. For the UI, I can combine custom branded screens with familiar platform-standard components so the app feels both unique and intuitive. I can handle the complete development process, including: • iOS & Android development • Authentication and user management • In-app purchase integration • Push notifications • Custom and standard UI • Testing and bug fixing • Store-ready builds and documentation • Basic post-launch critical bug support I’d prefer to divide the project into milestones so you can review the progress at each stage. We can first discuss the app flow, designs, backend/API details, and purchase model, then finalize the timeline and start date. Looking forward to discussing the project with you. Best regards Suresh
$500 AUD in 7 days
9.2
9.2

HEY! I UNDERSTAND YOU NEED A PROFESSIONAL CROSS-PLATFORM MOBILE APP WITH SECURE AUTHENTICATION, RELIABLE IN-APP PURCHASES AND REAL-TIME PUSH NOTIFICATIONS FROM THE FIRST RELEASE. I have 12+ years of IT experience with strong expertise in Flutter, React Native, iOS, Android, API integration, authentication, payments and notification systems. I will deliver: • Production-ready iOS & Android application • Secure registration/login and session management • Apple/Google in-app purchase integration • Real-time push notifications • Custom branded screens combined with familiar native UI patterns • Responsive, smooth and scalable architecture • Store-compliant builds for App Store & Google Play • Complete source code and documentation • Testing, deployment assistance and post-launch critical bug support FLOW: Authentication → Core App → In-App Purchase → Notifications → Testing → Store Submission → Launch. I recommend Flutter for a single maintainable codebase while preserving strong native performance and platform-specific integrations. I can start immediately and work with clear milestones from development through store-ready delivery. THANKS CHIRSTINA
$250 AUD in 7 days
8.4
8.4

Hi — Elias here from Miami. I see you're looking to create a professional mobile app for both iOS and Android, which is essential for reaching a broader audience. The goal is to ensure a seamless experience across platforms while addressing the complexities involved. The real challenge often lies in maintaining consistent performance and user experience across different devices. What usually matters most here is how well the app scales and integrates with backend services. The tricky part is ensuring the architecture supports future feature expansions without compromising stability. My approach would involve using React Native for its efficiency in building cross-platform apps. I’d structure the app with a focus on modular components, making updates and new features easier to implement. This will enhance maintainability and robustness. I've developed similar apps that required tight integrations and careful state management, ensuring they perform well under various conditions. A few questions to better understand the scope: Q1 – What specific functionalities do you envision for user roles within the app? Q2 – Are there particular backend services or APIs you’d like to integrate? Q3 – How do you plan to handle user authentication and data security? Happy to discuss the details and suggest the best technical approach. Looking forward to hearing from you.
$600 AUD in 5 days
8.2
8.2

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 Android and iOS app 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
$250 AUD in 14 days
8.0
8.0

Hi sir, I read your project description .I can do your project & able to run successfully. I have 8+ years experience for website & mobile application development also done over 400+ project by a good team members . It will be very much pleasure for me, if you give me the opportunity to do your job for minimum cost. Thanks for your consideration . Thanks with Regards Prosanto
$800 AUD in 25 days
8.0
8.0

Hello, I am excited about the opportunity to work on the iOS & Android App Creation project. I understand the need for a mobile app that runs smoothly on both platforms with essential features like secure user authentication, in-app purchases, and real-time push notifications. With my expertise in Flutter, iOS Development, Android App Development, and React Native, I am confident in delivering a high-quality solution that meets your requirements. I plan to create a visually appealing interface with a blend of custom screens for brand impact and standard UI elements for user familiarity. I will ensure performance and store compliance are top priorities throughout the development process. - MY WORK STATS: ✨ https://www.freelancer.com/u/XanvraTECH I look forward to discussing further details and milestones for this project. Best regards, Warda Haider
$250 AUD in 4 days
7.0
7.0

Thank you for providing detailed requirements for your professional mobile app project. Key features include user authentication, in-app purchases, and real-time push notifications for both iOS and Android platforms. Choice of Flutter, React Native, or platform-specific languages like Kotlin/Swift will depend on performance, scalability, and compliance needs. I have experience delivering similar projects with a focus on user experience, security, and performance. I propose a structured approach with design, development, testing, and deployment phases, maintaining open communication throughout. I also prioritize post-launch support and long-term partnership for updates and scalability. Let's discuss further to tailor the project timeline and roadmap for a successful app launch. I am excited about the opportunity to work together to bring your app idea to life.
$675 AUD in 5 days
7.1
7.1

Yes, at CnEl India, we can design and develop your dual-platform mobile app, delivering custom brand UI, secure user authentication, native push notifications, and store-compliant in-app purchases. Our Technical Execution Methodology Cross-Platform Architecture: We recommend React Native or Flutter to build a high-performance single codebase targeting iOS and Android while meeting strict Apple and Google store compliance standards. Auth & In-App Purchase Integration: Implementing secure user authentication (OAuth 2.0/Firebase Auth) alongside store-certified In-App Purchase (IAP) modules (StoreKit 2 / Google Play Billing) with backend receipt validation. Real-Time Push Notification Engine: Configuring Firebase Cloud Messaging (FCM) and Apple Push Notification service (APNs) for instant, targeted real-time user engagement. Hybrid UI/UX Design System: Crafting bespoke brand screens alongside standard native platform components to ensure intuitive user navigation and fast adoption. Store Delivery & QA Support: Delivering signed, production-ready release builds (IPA/AAB) for App Store and Google Play, complete source code, documentation, and post-launch bug-fix support. We can start immediately! Best regards, CnEl India Team
$500 AUD in 15 days
7.0
7.0

Hi there, I am excited about the opportunity to work on your iOS and Android app project. With over [X years] of experience in mobile app development, I am well-versed in creating apps that deliver seamless cross-platform experiences, ensuring they meet both App Store and Google Play standards. Your emphasis on secure user authentication, reliable in-app purchases, and real-time push notifications aligns perfectly with my expertise. I have successfully implemented these features in past projects, using both Flutter and React Native, to provide robust and user-friendly solutions. For the interface, I propose a design strategy that combines custom screens for brand impact with intuitive standard UI elements, ensuring both innovation and user familiarity. I am open to discussing the most suitable technology stack, be it Flutter, React Native, or native development in Kotlin/Swift, to ensure optimal performance and compliance. As part of my deliverables, I will provide comprehensive source code documentation and app builds ready for submission to both app stores, along with post-launch support to address any critical issues. Let's discuss your project milestones and timeline to get started. Looking forward to the possibility of collaborating with you. Best Regards, Efanntyo
$500 AUD in 10 days
6.5
6.5

Hi, I reviewed your request to create an iOS and Android app that works smoothly from day one, including secure user authentication, reliable in-app purchases, and real-time push notifications. I’ll build the app with React Native and Android App Development so the shared core logic stays consistent across stores, while using clean navigation and custom brand screens alongside standard UI components. I’ll also ensure App Store and Google Play compliance for sign-in flows, purchase handling, and push notification setup. I focus on quality code, clear documentation, and tested builds that are ready for submission, plus responsive post-launch bug fixes. Let’s discuss here now.
$250 AUD in 30 days
7.1
7.1

Hi, It will be an honor for me to work with you. I have got 12 years of mobile application development experience (iOS, android, flutter). Lets discuss this in detail and get this started. Looking forward to hear from you.
$550 AUD in 7 days
6.9
6.9

Hello!! "HALAL GUIDE AUSTRALIA" I understand you need a complete iOS and Android mobile application built with a smooth, modern interface and reliable functionality across both platforms. * Is this a new app or an existing app that needs to be developed further? * Do you already have the UI/UX designs and feature specifications? * Will the app require APIs, payments, push notifications, or real-time functionality? The development can include responsive mobile UI, user authentication, API and backend integration, push notifications, user profiles, core app features, secure data handling, testing across iOS and Android devices, and production-ready builds for both platforms. Relevant cross-platform mobile applications have been developed with clean user flows and reliable backend integrations, focusing on consistent performance across different devices. Let us chat and discuss your features and preferred technology so we can plan the app development efficiently. Best regards Farhin B
$250 AUD in 10 days
6.8
6.8

"Halal Guide Australia" Greetings, I checked the attached base44 based screenshot and will build this app in native platform. Are the purchases subscriptions or one time, and is there a backend already, because both stores expect server side receipt validation and that decides whether we need a server or can run on Firebase. I'll share my portfolio so you could check my work prior to commit anything. Looking forward to hearing back from you soon. Thank You!
$500 AUD in 7 days
6.6
6.6

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
$250 AUD in 22 days
6.6
6.6

This is a well-defined scope and squarely in my wheelhouse — cross-platform apps with auth, IAP, and push are what I build most often, so I can move straight into milestones. Stack: Flutter — single codebase for true from-day-one iOS/Android parity, near-native performance, and it handles your "custom brand screens + familiar standard components" mix well via adaptive Material/Cupertino widgets plus full custom-widget control where branding matters. Core features: Auth: Firebase Auth (email/password, Google, Apple Sign-In — required if any social login is offered) with secure token handling. IAP: RevenueCat wrapping StoreKit/Play Billing — handles receipt validation, subscription state, and the compliance edge cases that trip up custom IAP builds. Push: Firebase Cloud Messaging with deep-linking so notifications open the right in-app screen. UI approach: custom Figma-matched builds for key brand screens (onboarding, home, core flow), standard components for settings/forms/lists — fast without looking generic. Deliverables: full documented source (GitHub repo), signed builds ready for App Store/Play submission, store listing guidance, and 2 weeks post-launch bug-fix support. Milestones: 1) auth + navigation, 2) core screens, 3) IAP + push, 4) QA + store submission prep.
$400 AUD in 5 days
6.3
6.3

Hello there, Hope you are doing well I’m interested in building your iOS & Android mobile application with a strong focus on performance, security, reliable in-app purchases, and store compliance from the first release. For this project, I recommend Flutter because it provides a single maintainable codebase for iOS and Android while still allowing native integrations where required. Recommended Tech Stack Mobile: Flutter + Dart Backend: Node.js + NestJS Database: PostgreSQL / Firebase depending on requirements Key Features Authentication Email/password registration and login Social login if required Secure session management Password reset Account/profile management Proper authorization and data protection In-App Purchases Apple App Store purchase integration Google Play Billing integration Product/package management Purchase verification Restore purchases Transaction handling and error states Push Notifications Firebase Cloud Messaging APNs integration Device token management Foreground/background notifications Deep linking from notifications Notification preferences
$250 AUD in 7 days
7.0
7.0

Hi I will be able to help you. Please message me so that we will have detail technical discussion. I have 9+ years of combined experience in Mobile Application development, Website development, Desktop application development, 3rd party Artificial Intelligence api, AR/ VR, Chatbot, Blockchain- Cryptocurrency, CRM & ERP, Game Development and any other Software development. I am having expertise in Native on Android Java, kotlin and IOS Swift, and For Hybrid Cross platform on Flutter Dart & React- Native and for web and backend on react js and node js, Python Django. Please consider me and initiate a chat for further detailed discussion. Regards, Anju
$300 AUD in 7 days
6.6
6.6

Hello⭐️, The main challenge is delivering authentication, subscriptions, and push notifications consistently across two operating systems while keeping the codebase maintainable enough for the first release. A cross-platform architecture is appropriate here, but store billing rules, notification permissions, account security, and platform-specific edge cases need to be handled natively where required. The first milestone should establish the core architecture and implement authentication before connecting subscription and notification flows, then test the complete purchase-to-entitlement path on both platforms. The listed budget is tight for the full scope, so I would treat it as an MVP rather than attempting a broad feature set. If the supplied screenshot represents the main product flow, I can use it to keep the initial build focused on the release-critical screens. Have a nice day
$450 AUD in 14 days
5.9
5.9

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