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I need an experienced mobile developer to build the first version of my Uanguang100 app for Android. The immediate goal is a clean, stable APK that lets new users create an account, log in securely, and manage a simple profile. Key requirements • Native Android build or a well-supported cross-platform framework that compiles to high-performance Android (Kotlin, Java, Flutter, or React Native are all acceptable). • Secure user authentication (email, phone, or social login—please outline your preferred method). • Editable user profile screen with avatar upload and basic data fields. • Modular codebase, clearly commented and handed over with full source, Gradle/project files, and a short README on how to compile and deploy. • A minimalist UI that follows current Material 3 guidelines so I can layer on additional features later. Nice-to-have (not mandatory in this phase): push notification hooks and a simple in-app purchase placeholder; let me know if including either would meaningfully affect timeline or architecture. Timeline & collaboration I’d like an initial test build within two weeks, followed by one round of feedback and a final delivery. Please outline the tools you plan to use, any third-party services you recommend for authentication, and a rough milestone schedule. If you have shipped Android apps with sign-in flows before, share a link or APK so I can see your work in action.
Project ID: 40596366
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152 freelancers are bidding on average $19 USD/hour for this job

With over a decade of experience in mobile app development, I understand the importance of creating a robust and user-friendly Android application like Uanguang100. My background in building high-performance systems, such as serving over 1 million users, directly aligns with your goal of creating a stable APK for new user registration, login security, and profile management. To ensure scalability and security in your project, I recommend implementing a modular codebase with clear comments and utilizing secure authentication methods like email verification. My past success in developing apps with similar functionalities proves that I can handle the complexity of your requirements. I encourage you to reach out so we can discuss the roadmap for developing the Uanguang100 app. I am ready to leverage my expertise in Flutter and Java to deliver a high-quality solution that meets your expectations. Let's collaborate to bring your vision to life.
$20 USD in 15 days
8.4
8.4

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 Java, Mobile App Development, Android, Software Architecture, Kotlin, React Native, Flutter, 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.
$25 USD in 5 days
7.9
7.9

Hello, I’m a Full Stack Java Developer with 11+ years of experience building secure, scalable web and mobile solutions. I have strong experience with Java, Spring Boot, REST APIs, MySQL/PostgreSQL, authentication, and Android application development. For your Android app, I can build a clean, modular, and high-performance application using **Java (Native Android)** following Material 3 guidelines. The app will include secure user registration/login, profile management, avatar upload, responsive UI, and well-structured code that's easy to maintain and extend. **What I'll deliver:** * Native Android app in Java * Secure authentication (Firebase or JWT-based) * Editable user profile with image upload * Clean architecture and documented source code * Gradle project, README, and deployment instructions * Tested APK with bug fixes I can provide an initial working build within **2 weeks** and will keep you updated regularly throughout development. I'm looking for a long-term collaboration and would be happy to discuss the architecture and recommend the best authentication and backend approach based on your future plans. Looking forward to working with you. Best regards, Rohit
$20 USD in 40 days
7.3
7.3

Hello, I am highly interested in developing the Uanguang100 Android app as described. With expertise in Flutter, Android App Development, Java, Kotlin, and React Native, I am well-equipped to meet the project requirements. I will ensure a secure user authentication process, an editable user profile screen, and a modular codebase with clear documentation for easy deployment. - MY WORK STATS: ✨ https://www.freelancer.com/u/XanvraTECH I would love to discuss further details and collaborate closely to ensure a successful project delivery. Looking forward to the opportunity. Best regards, Warda Haider
$15 USD in 40 days
7.0
7.0

Understanding the need for a clean, stable APK for the Uanguang100 app, our team is ready to deliver a solution that prioritizes user experience and security. We specialize in creating intuitive applications that allow seamless user account management. We’ll utilize a native Android build with Kotlin, ensuring secure user authentication through email and phone verification. The editable profile screen will include avatar uploads, and our modular codebase will be clearly commented for easy future enhancements. With experience in Material 3 design principles, we can create a minimalist UI that scales effortlessly. We have 20+ 5-star reviews on similar projects! Communication, quality, and on-time delivery are our priorities. If you'd like, I can also share similar work we've completed and discuss the best approach for your project. Regards, JP
$15 USD in 7 days
6.8
6.8

Hi there, I understand you are looking to develop the first version of the Uanguang100 Android app focusing on a clean, stable user experience. To address your requirements, I propose developing the core functionalities using Android-native development with Kotlin to ensure robust performance and seamless integration with device features. Security is crucial when handling user information, so I will implement secure authentication techniques to protect user data during account creation and login processes. For profile management, I will create an intuitive interface allowing users to easily update their information while maintaining robust back-end architecture to support scalability. Let's bring your vision for Uanguang100 to life with an emphasis on stability and usability right from the start. Best Regards, Khorshed Alam, RS Software
$20 USD in 40 days
8.3
8.3

Hello, I’ve gone through your project details and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, working with Flutter, Android, iOS, React, Node.js, and APIs. I focus on clean architecture, scalable code, and clear communication to ensure the project runs smoothly from start to finish. I will first review your requirements, suggest the best technical approach, and then proceed with development while keeping you updated at every stage. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: What secure authentication methods do you envision for your app's user sign-in process? Let’s discuss over chat! Regards, Arpit Jaiswal
$20 USD in 32 days
7.5
7.5

As an Android developer with a diverse range of technical skills and over a decade of experience under my belt, I am confident that I can deliver a high-quality, performance-driven, and secure Uanguang100 app for you. With both native Android and cross-platform frameworks such as Flutter and React Native in my repertoire, I can provide you with the most efficient solution tailored to your specific needs. My proficiency in languages like Kotlin, Java, and skills in Mobile App Development ensures I have the capability to produce the clean and stable APK that you are expecting within your proposed timeline. Your need for secure user authentication is a priority, and you can rest assured that I will utilize all my knowledge in software architecture to build an authentication system that incorporates advanced methods like token-based authentication or OAuth2 to ensure maximum security for your users. Modular codebases are another area where I thrive. During this project, I will create a clearly commented codebase with accompanying comprehensive documentation - making it easy for any future developer to understand it. Finally, my understanding of Material Design 3 guidelines enables me to give shape to minimalist UIs which serve as ideal canvases for including additional features in the future.
$20 USD in 40 days
6.5
6.5

Hello Client ! Just checked your project description about the development of a Mobile application. Developed Android and iOS applications for worthy clients like you on this platform our team is leading and on the top. Consider us for your project and i promise we won’t let you down. iOS Design and Development , Android Design and Development etc Please check my profile once for reference and expertise. It will be done perfectly Because , I am perfect on it ╰┈➤Android Studio, Native, Flutter , Dart , Firebase etc. Thank you
$20 USD in 40 days
6.4
6.4

Greetings, I understand the importance of developing the Uanguang100 Android app with a focus on user account creation, secure login, and profile management. My expertise lies in Mobile App Development, Android, Flutter, and Java, ensuring a robust and efficient application tailored to your requirements. My approach involves meticulous requirement confirmation, strategic planning, precise implementation, thorough testing, and transparent milestone tracking. This guarantees a streamlined development process with a clear focus on delivering tangible results aligned with your business objectives. With a proven track record in developing user-friendly and secure Android applications, I am confident in my ability to meet and exceed your expectations. You can view my portfolio here: ⭐⭐ https://www.freelancer.com/u/CodeAnchors ⭐⭐ To ensure a successful collaboration, could you please clarify your top priority or primary business goal for the Uanguang100 app? Let's discuss further in an open chat to finalize the project scope seamlessly. Best regards, Muhammad Anas Khan
$25 USD in 40 days
5.8
5.8

Hello There! I’m Md. Toriqul Islam, a Full-Stack & Mobile App Developer with 10+ years of experience building scalable web and mobile applications. I’m ready to start immediately. I have rich experience in Android app development, secure authentication, user profiles, API integration, and creating clean mobile-first interfaces. I am skilled in React Native, Flutter, Android Development, Kotlin, Java, Firebase, REST APIs, UI/UX Design, and Git. I understand you need an Android app MVP with secure user registration/login, profile management, avatar upload, and a modular Material 3-based UI. I can build a stable APK, provide clean source code, documentation, and a scalable architecture for future features. I’m ready to discuss your preferred authentication approach and development roadmap. Looking forward to hearing from you. Best regards, Md. Toriqul Islam
$15 USD in 40 days
6.0
6.0

With a broad spectrum of experience ranging from full-stack web development to AI-powered automation, I am versatile in delivering versatile digital solutions. My expertise in mobile app development shines through platforms like Android and Flutter(React Native) which suit your project perfectly. I have successfully designed and developed apps with secure login systems before - a skill that will allow me to create a robust sign-in flow for your Uanguang100 app. I am well-versed in Kotlin, one of your preferred programming languages. But, if you prefer another language like Java or Flutter, rest assured that I can adeptly handle those as well. My primary goal is to hand over a fully functional, modular codebase with clean documentation that you can trust to extend upon. Apart from this project's immediate requirements, the strategic nature of my approach wants to add great value to you. I focus on creating scalable products for my clients, so the design of your app will prioritize compatibility with potential updates such as push notification hooks and optional in-app purchases. In short, by choosing me, you're opting for not just a developer but an invaluable strategic partner who aligns skills with business enhancement. Let's get this APK going within the timeline you desire!
$15 USD in 40 days
5.7
5.7

I am excited about the opportunity to develop your Uanguang100 app for Android. My goal is to deliver a clean and stable APK that meets your requirements, including secure user authentication and an editable user profile. I specialize in Kotlin and will ensure that the app follows Material 3 guidelines while facilitating easy additions of future features. For user authentication, I prefer utilizing Firebase Authentication due to its flexibility and security. This allows for both email/password and social login options, ensuring a seamless user experience. The profile screen will support avatar uploads and essential data fields, and I will implement a modular codebase that is well-documented and includes a README for compilation and deployment instructions. Regarding your nice-to-have features, including push notifications and an in-app purchase placeholder is feasible and can be integrated without significantly impacting the initial timeline. Please review my previous projects that include sign-in flows to assess my abilities. I can provide APKs or links as required. What is your preferred method for user authentication? Looking forward to collaborating with you and bringing your vision to life. Best regards, Talha
$25 USD in 28 days
5.6
5.6

With over a decade of professional experience, my forte lies in full-stack mobile app development, which perfectly aligns with your project requirements. I have in-depth knowledge and hands-on expertise with Android App Development using Java, Kotlin, and cross-platform frameworks like Flutter and React Native. Moreover, as you mentioned material design is essential; I've adapted and practiced Material 3 guidelines into my projects and garnered appreciation for creating minimalist yet elegant user interfaces. One of the most crucial aspects you seek is secure authentication - I can seamlessly integrate your preferred login options, be it email, phone or social login. My experience also includes working with third-party services facilitating secure authentication such as Firebase and Supabase. For instance, in an application I worked on for a reputed taxi service, I implemented an intricate yet highly resilient real-time user authentication system for their Android app utilizing Firebase. Besides the several Android apps that are thriving on the Google Play Store featuring my work, I would also like to share a recent success story where I developed an end-to-end trip management system incorporating sign-in flow for a tourist-oriented travel app. The application offered features ranging from ride booking to live tracking and utilized robust data storage mechanisms much like the functionalities your app might require.
$20 USD in 40 days
6.2
6.2

I am Mahad, a seasoned developer with years of experience building mobile apps and software architectures. My proficiency spans across Kotlin, Java, Flutter, and React Native - all highly suitable for the Uanguang100 app project. I have developed many apps with robust authentication systems that include email, phone, and social logins. For security concerns, my preferred method is employing best practices like secure token-based authentication. A key tenet of mine is delivering clean, modular codebases. I always ensure my code is well-commented, maintainable, and extensible. When you choose me for this project, you can expect a comprehensive handover complete with source files and a README to make the compilation and deployment process trouble-free. The app's simplicity adhering to Material 3 guidelines will only serve to make it more scalable for any future features you desire to add. Beyond the specific requirements outlined, I would also love to bring to life your nice-to-have features - push notifications hooks and in-app purchases. If their inclusion affects the timeline or architecture meaningfully, I'll keep you updated but won't compromise on the end product's stability and efficiency. Eminently collaborative, I look forward to providing an initial test build within two weeks followed by ample room for your feedback
$20 USD in 40 days
5.2
5.2

For your Uanguang100 Android app, I will build a clean, stable APK focusing on smooth user signup, secure login, and a simple profile screen. Based on similar projects, I recommend using Kotlin with Firebase Authentication for reliable email and social login options—this avoids custom backend complexity and keeps security solid. I’ll design the profile screen with avatar upload and editable fields, following Material 3 guidelines for a modern, minimalist feel that’s easy to extend. The codebase will be modular and well commented, with a README explaining build steps and dependencies. Including push notification hooks or in-app purchase placeholders is straightforward with this setup and won’t delay the timeline significantly. I suggest Firebase Cloud Messaging if you want push later. The plan: - Week 1: Basic signup/login and profile UI - Week 2: Finalize flow, modularize code, prepare build for feedback Do you have preferred social login providers? Also, should avatar images be stored remotely from the start or handled locally initially? Ready to start and deliver the test build in two weeks.
$15 USD in 7 days
5.4
5.4

Hi, Your project is a great fit for my experience building secure Android applications with clean, scalable architecture. I recommend developing Uanguang100 in **Flutter** with **Firebase Authentication** (Email/Google/Phone), Firestore for user data, and Firebase Storage for avatar uploads. This provides excellent performance, strong security, and makes future iOS support straightforward if needed. The first release will include secure sign-up/login, editable profile with avatar upload, Material 3 UI, modular and well-commented code, complete source files, Gradle configuration, and a clear README for deployment. I can also prepare push notification and in-app purchase placeholders without affecting the project's scalability. Proposed timeline: • Week 1: Authentication + UI • Week 2: Profile, testing, APK delivery • Final: Feedback implementation and source handover Relevant work: • E-commerce App (Flutter + Firebase Auth) • Food Delivery App with Google Sign-In • Healthcare Appointment App featuring secure authentication and profile management I look forward to discussing your vision and delivering a stable, production-ready first version. -Thanks, Pooja
$20 USD in 40 days
5.2
5.2

Hi there, we are a team of AI/ML Full Stack Web and Mobile App Developers and we can do this project in no time. Thanks Ashish Kumar.
$20 USD in 40 days
5.3
5.3

Hi. To build Uanguang100 cleanly, I’d use Kotlin with Android Studio, Jetpack Compose, Material 3, and Firebase Authentication for fast secure email or phone sign-in. I’ll keep the first release modular with MVVM, a clear navigation flow, profile editing, avatar upload, and a stable APK that is easy to extend later. I can also wire push notification hooks and an in-app purchase placeholder without bloating the architecture. As a Senior Mobile App Developer, I have mastered Kotlin, Jetpack Compose, Firebase, and Android app architecture, and have strong experience in Android MVPs, authentication flows, and production handoff builds. I am sure I can deliver high-quality results within two weeks for the test build and final polish after feedback. I’ll provide full source, Gradle files, and a short README so you can compile and deploy without friction. The build will stay lightweight, readable, and ready for the next feature phase. Let’s get in touch and discuss more. Thanks.
$20 USD in 2 days
5.0
5.0

Hello, I can build the first Uanguang100 Android version with secure account creation, login, and an editable profile with avatar upload. For Android App Development, I can use React Native for a fast APK, or Flutter if you prefer a single clean UI stack. I will connect authentication through Firebase email and phone login, structure the code in clear modules, and follow Material 3 for a simple interface. You will receive full source, Gradle project files, comments, and a README, with a test build in two weeks and final delivery after feedback. Best regards, Teo
$20 USD in 33 days
4.7
4.7

Palembang, Indonesia
Member since Feb 10, 2026
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$2-8 USD / hour
₹12500-37500 INR
$15-25 USD / hour
₹12500-37500 INR
₹750-1250 INR / hour