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I have a live mobile app on both iOS and Android that needs a full refresh. My priorities span three areas at once: • Sharpen the User Interface so the screens feel modern, consistent and intuitive. • Optimise Performance—faster load times, smoother animations, lower memory use. • Add a short list of new features that I will share once you have reviewed the current build. I’ll give you access to the existing repositories and an overview of the current architecture. After an initial code and design audit, I’ll need a clear action plan with milestones, then iterative builds I can test on TestFlight and internal Android tracks. Deliverables 1. Updated source code with in-line comments and a brief change log. 2. New UI assets integrated and pixel-perfect across common screen sizes. 3. Performance metrics (before vs. after) demonstrating tangible gains. 4. Newly implemented features fully functional and covered by basic unit or widget tests. 5. Release-ready builds for both App Store and Google Play. Show me examples of cross-platform apps you’ve improved in these exact areas and outline which frameworks or performance tools you prefer to work with. Let’s make this app feel brand-new.
ID do Projeto: 40315656
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Ativo há 21 dias
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78 freelancers estão ofertando em média $493 USD for esse trabalho

Hello, I have reviewed your requirement for a complete mobile app refresh across iOS and Android and can handle UI modernization, performance optimization, and feature enhancements in a structured way. I will begin with a full audit of your existing codebase and UI, then define clear milestones. For implementation, I typically work with Flutter or native stacks depending on your current architecture, ensuring smooth animations, reduced memory usage, and faster load times using profiling tools and performance tuning. The UI will be redesigned for consistency and responsiveness across devices, followed by integration of your new features with proper testing. You will receive updated source code, changelogs, performance comparison metrics, and release-ready builds for TestFlight and Google Play. I have 10+ years of experience improving live apps with focus on UX, speed, and scalability, and can deliver measurable improvements. I WILL PROVIDE 2 YEAR FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE, WE WILL WORK WITH AGILE METHODOLOGY AND WILL GIVE YOU ASSISTANCE FROM ZERO TO PUBLISHING ON STORES. I eagerly await your positive response. Thanks
$360 USD em 7 dias
8,4
8,4

Hello, I am Warda Haider, a skilled iOS and Android developer with expertise in Mobile App Development, User Interface / IA, and performance optimization. I understand the requirements of revamping your mobile app to enhance UI, optimize performance, and add new features. I have a proven track record of improving cross-platform apps in these specific areas. My proposed steps include conducting a thorough code and design audit, creating a clear action plan with milestones, and delivering iterative builds for testing. - MY WORK STATS: ✨ https://www.freelancer.com/u/XanvraTECH Let's discuss further to ensure your app feels brand-new. Best regards, Warda Haider
$250 USD em 4 dias
6,9
6,9

Hi there, I reviewed your requirements and this looks like something we can handle well. A full iOS and Android refresh with performance tuning is exactly the kind of work we do regularly—we understand the balance between modernizing the UX and keeping things stable. I noticed you're prioritizing three areas across both platforms. Before we dive in, I have a couple of questions about your current tech stack and which platform you want to tackle first. Let's chat through the details. I have delivered 1500+ web and mobile projects over 14+ years — happy to share relevant examples. Thanks, Hasan
$250 USD em 21 dias
6,7
6,7

Hello, I understand that you are looking to revamp your existing mobile app on both iOS and Android platforms. My approach will involve enhancing the User Interface to make it more modern and intuitive, optimizing performance for faster load times and smoother animations, and adding new features as per your requirements. With expertise in Mobile App Development, Android, iOS Development, User Interface / IA, and App Design, I am confident in delivering a revamped app that meets your expectations. Effective communication will be maintained throughout the project to ensure your satisfaction. You can view examples of my previous work in my portfolio https://www.freelancer.com/u/Curveballsol I look forward to discussing further details and working on this project together. Best regards, Curveball Solutions
$600 USD em 8 dias
6,4
6,4

As a multi-talented developer with extensive experience in PHP, Laravel, Node.js, React Native, Flutter and Ionic, I'm confident that I can deliver the mobile app overhaul and new features you're seeking. Having worked on various domains like CRM systems to mobile apps and custom websites over the years, I pride myself in my ability to understand and meet the exacting needs of my clients. Revamping your app while ensuring effective navigation, modern aesthetics and alluring user interface is highly achievable with my polished command of tools like Figma and Photoshop. The shortlist of new features will receive careful attention, ensuring they are seamlessly integrated for a smooth and functional user experience. Given your focus on performance optimization, I want to highlight my firm grasp on both frontend and backend technologies needed for this task. Thanks.....
$500 USD em 7 dias
6,4
6,4

Hello, I am Vishal Maharaj, with 20 years of experience in HTML5, iOS Development, Android, User Interface / IA, Mobile App Development, and App Store Optimization. I have carefully reviewed your project requirements for revamping your mobile app on iOS and Android. To achieve the desired outcomes, I propose conducting a thorough code and design audit to identify areas for improvement. I will then create a detailed action plan with milestones, focusing on enhancing UI elements for a modern and intuitive feel, optimizing performance for faster load times, and integrating new features seamlessly. I will ensure that the updated source code is well-documented, UI assets are pixel-perfect, performance metrics show tangible improvements, new features are fully functional, and release-ready builds are provided for both platforms. Let's discuss further to initiate the project. Cheers, Vishal Maharaj
$500 USD em 5 dias
5,8
5,8

I can start by reviewing your existing codebase and design to pinpoint UI inconsistencies and performance bottlenecks. From past work upgrading a fintech app with similar issues, a careful audit helped me create a clear milestone plan that balanced visual polish with smoother animations and memory cuts. For performance, I usually rely on profiling tools like Xcode Instruments and Android Profiler to measure load times and memory before/after changes. I focus on optimizing image sizes, refactoring heavy components, and streamlining state management to reach noticeable speed gains. Once we agree on the action plan, I’ll push iterative builds via TestFlight and Android internal tracks so you can test new UI assets and features incrementally. About the new features you’ll share: could you confirm if they require API updates or affect offline support? I work mainly with Flutter and React Native for cross-platform apps—both allow pixel-perfect UI integration and efficient unit/widget testing. Ready to dive into the code audit and put together a straightforward plan that hits all your priorities.
$500 USD em 7 dias
5,6
5,6

⭐⭐⭐⭐⭐ ✅Hi there, hope you are doing well! I recently revamped a cross-platform mobile app to modernize its UI, optimize performance, and add new features seamlessly, resulting in faster load times and a more intuitive UX. The most important part for a successful refresh is thoroughly auditing the current codebase and architecture to build a clear, actionable plan that ensures pixel-perfect UI and improved app responsiveness. Approach: ⭕ Conduct a detailed code and design audit to identify bottlenecks and UI inconsistencies. ⭕ Create a milestone-based action plan addressing UI redesign, performance optimization, and feature integration. ⭕ Use React Native along with performance tools like Flipper and Android Profiler. ⭕ Deliver optimized, commented source code with a change log. ⭕ Provide release-ready builds with robust testing on TestFlight and Android tracks. ❓ Could you share the current app’s framework and any performance metrics you have? I am confident my expertise with cross-platform mobile development and performance tuning will transform your app into a faster, modern, and fully featured product. Best regards, Nam
$550 USD em 5 dias
5,2
5,2

Greetings, I am excited about the opportunity to revamp your mobile app on both iOS and Android, focusing on enhancing the User Interface, optimizing performance, and adding new features. With a keen eye for modern design and a strong background in Mobile App Development and User Interface, I am confident in my ability to deliver a refreshed app that meets your objectives. I have experience in improving cross-platform apps in areas similar to what you are looking for and have a proven track record of delivering high-quality results. By conducting a thorough code and design audit, I will create a clear action plan with milestones to ensure a smooth iterative development process. I am well-versed in utilizing frameworks and performance tools to enhance app functionality and user experience. I am eager to showcase my portfolio, which includes successful app revamps that have resulted in improved UI/UX and performance enhancements. Let's collaborate to make your app feel brand-new and exceed your expectations. Looking forward to discussing further details with you. Best regards, Muhammad Anas Khan
$350 USD em 6 dias
5,3
5,3

I'm Iosif Peterfi, 15+ years delivering user-focused digital experiences across mobile and web from Europe. I have a live mobile app on both iOS and Android that needs a full refresh. My priorities span three areas at once: - Sharpen the User Interface so the screens feel modern, consistent and intuitive. - Optimise Performance-faster load times, smoother animations, lower memory use. - Add a short list of new features that I will share once you have reviewed the current build. I'll give you access to the existing repositories and an overview of the current architecture. After an initial code and design audit, I'll need a clear action plan with milestones, then iterative builds I can test on TestFlight and internal Android tracks. Deliverables 1. Updated source code with in-line comments and a brief change log. 2. New UI assets integrated and pixel-perfect across common screen sizes. 3. Performance metrics (before vs. after) demonstrating tangible gains. 4. Newly implemented features fully functional and covered by basic unit or widget tests. 5. Release-ready builds for both App Store and Google Play. Show me examples of cross-platform apps you've improved in these exact areas and outline which frameworks or performance tools you prefer to work with. Let's make this app feel brand-new. This is my speciality. I map your needs to proven outcomes, aligning UI polish, performance gains and feature delivery to business value.
$1.200 USD em 5 dias
5,0
5,0

Hi, I can audit your current app, modernize the UI, boost performance, and roll out new features with clear milestones and measurable improvements. I’ll deliver optimized builds (Flutter/React Native or native), smoother UX, and before/after metrics so your app feels fast, fresh, and release-ready. Lets discuss on chat. Regards Abhishek
$500 USD em 7 dias
5,6
5,6

With over 9 years of experience in mobile app development, I have successfully refreshed and revamped several cross-platform applications similar to yours. I have a keen eye for user interface design, optimizing performance, and adding new features that offer an enhanced user experience. My proficiency in Android and iOS development combined with my extensive knowledge of frameworks such as Java and PHP will play a vital role in turning your current app into a sleek, modern and thriving platform. Pitching myself as an individual-contributor of a well-established Website and Mobile App development company, I assure you dedicated attention to every aspect of your project. From conducting code audits to delivering release-ready builds for both the App Store and Google Play, your project's success is my priority. I am also well-versed in testing methodologies such as unit and widget tests which ensures that the newly-implemented features are robust and reliable. Furthermore, not only do we offer cost-effective services but our commitment extends beyond delivery. We offer 3 months of free support for existing developments ensuring the quality of our work even post-delivery. With us, you'll have a team that listens to your needs attentively, translates them into action plans with clear milestones, embraces feedback throughout iterative builds, and milestones
$500 USD em 7 dias
5,3
5,3

Hello there, I can help you fully refresh your mobile app across UI, performance, and feature upgrades, making it feel modern and significantly faster. I have strong experience improving cross-platform apps built with Flutter and React Native, focusing on UI consistency, performance optimization, and scalable architecture. I will proceed with - 1. Initial audit - Review your codebase, UI, and architecture to identify bottlenecks, inconsistencies, & improvement areas. 2. UI and UX overhaul - Redesign screens for a clean, modern, and intuitive experience with consistent spacing, typography, and components 3. Performance optimization - Improve load times, reduce memory usage, and smooth animations using profiling tools and best practices 4. Feature implementation - Develop new features based on your requirements with clean, maintainable code and proper testing 5. Testing and release - Provide TestFlight and Android test builds for iterative feedback, followed by production-ready releases Ready to review your current build and start with the audit. Thank you Saurabh
$280 USD em 10 dias
4,8
4,8

Hi there! I'm Asma, a web developer and graphic designer with 10 years of hands-on experience helping brands stand out in crowded markets. I've worked with clients and agencies across fashion, hospitality, property, and luxury lifestyle sectors, and one thing stays constant: I'm obsessed with getting the details right. I don't just make things look pretty. I solve problems. Whether it's a logo that captures your brand's soul, a website that loads lightning fast , or a complete visual identity from business cards to social media assets, every element I create is intentional and built to convert. My toolkit spans the full creative spectrum: WordPress, Shopify, HTML/CSS/JS, PHP, Laravel, Figma, Photoshop, and Illustrator. I'm equally comfortable translating a PSD or Figma file into clean, functional code as I am designing from scratch. What you can expect working with me: fast responses, clear communication, and a genuine investment in making your project shine. I treat every client's vision like it's my own. I'd love to learn more about what you're looking for. Let's create something remarkable together. Looking forward to hearing from you!
$350 USD em 3 dias
4,4
4,4

HELLO, I checked your requirement clearly you need **MOBILE APP REVAMP WITH UI MODERNIZATION, PERFORMANCE OPTIMIZATION & NEW FEATURE INTEGRATION (iOS + ANDROID)** where your existing app is upgraded to feel fast, smooth, and production-ready, I have **8+ years of experience in mobile app development** improving live apps with better UX, performance tuning, and feature scaling **MODERN UI + HIGH PERFORMANCE = BETTER USER RETENTION & APP STORE GROWTH** <<--------What I’ll do:------->> Full audit of existing codebase & UI/UX Redesign UI for modern, consistent, intuitive experience Optimize performance (load time, memory, animations) Implement new features based on your requirements Ensure pixel-perfect responsiveness across devices Testing via TestFlight & Android internal tracks <<--------Delivery:------->> Updated source code with comments + changelog Integrated UI assets across all screens Performance report (before vs after improvements) Fully working new features with basic testing Release-ready builds for App Store & Play Store LET’S DISCUSS YOUR PROJECT IN DETAIL — LOOKING FORWARD TO YOUR RESPONSE. THANKS
$250 USD em 7 dias
5,0
5,0

Hey , Good afternoon! I’ve carefully checked your requirements and really interested in this job. I’m full stack node.js developer working at large-scale apps as a lead developer with U.S. and European teams. I’m offering best quality and highest performance at lowest price. I can complete your project on time and your will experience great satisfaction with me. I’m well versed in React/Redux, Angular JS, Node JS, Ruby on Rails, html/css as well as javascript and jquery. I have rich experienced in iOS Development, App Store Optimization, User Interface / IA, Performance Tuning, HTML5, Android, Mobile App Development and App Design. For more information about me, please refer to my portfolios. I’m ready to discuss your project and start immediately. Looking forward to hearing you back and discussing all details.. I await your immediate response
$555 USD em 4 dias
3,9
3,9

Hello, I understand you need a full refresh of your iOS and Android app, focusing on a modern, intuitive UI, performance optimization, and a few new features. Our team can perform a full code and design audit of your current repositories, then deliver a clear action plan with milestones. We’ll enhance the UI for consistency and modern aesthetics, optimize animations, reduce load times, and lower memory usage. Any new features you provide will be implemented cleanly, fully tested, and integrated with your refreshed design. Deliverables include: Updated source code with in-line comments and a concise change log. Pixel-perfect UI assets across all common screen sizes. Performance metrics demonstrating improvements over the current build. Functional new features with unit/widget tests. Release-ready builds for App Store and Google Play. We’ve upgraded cross-platform apps built in Flutter and React Native, using profiling tools like Flutter DevTools, Android Profiler, and Xcode Instruments to ensure smooth, performant results. Let’s schedule a walkthrough of your current code and UI so we can propose a detailed milestone plan and timeline.
$350 USD em 7 dias
3,7
3,7

Refreshing a live app requires both design precision and technical optimisation, and I can modernise your product without disrupting its core architecture. After reviewing your codebase, I’ll run a full UI and performance audit, then deliver a clear milestone plan. I’ll refine layouts, improve visual consistency, and enhance usability while optimising load times, memory usage, and animation smoothness for measurable speed gains. Once the foundation is improved, I’ll implement your new features with clean, well-documented code and provide iterative TestFlight and Android builds for quick feedback. You’ll receive updated source code, integrated UI assets, performance comparison metrics, stable feature releases, and store-ready builds. I’ve successfully improved several cross-platform apps and can share examples along with my preferred frameworks and optimisation tools. Ready to review your app and begin the upgrade. Syed
$490 USD em 3 dias
3,7
3,7

Hello, Instead of copy-pasting your project description in AI and getting a suitable response, I am proposing my bid after reading your project requirement and according to my expertise and capability. Myself Sukrati and I am a **Mobile App Developer**, with 8+ years of experience in **iOS, Android, cross-platform frameworks, and performance optimization**, and I can help you revamp your **mobile app**. You need an **app** which can provide services like **modern UI/UX, faster load times, smoother animations, lower memory usage, and new feature integration**. For this project I can deliver: **Client-side/Admin features:** * Performance metrics & analytics * Iterative build feedback integration * Source code documentation & comments * Release-ready builds for iOS & Android **User-side/Customer features:** * Pixel-perfect UI across devices * Improved responsiveness & speed * Smooth animations & transitions * Newly implemented functional features * Optimized memory and battery usage Lets connect on chat and align more possibilities. Thanks Sukrati
$250 USD em 7 dias
3,5
3,5

With a decade of hands-on experience and a highly skilled team of 10, Web Crest, under my leadership, has a proven track record of turning mobile apps into robust, future-proofed systems that not only look good but also perform exceptionally. Our expertise spans across iOS and Android platforms, giving us an advantage in tackling your project which requires both platforms' proficiency. We understand the value of clean, modern designs that resonate with the users. Combined with our expertise in User Interface/ IA, I assure you that we can provide a refreshed interface for your app that will make it modern, consistent and intuitive. Furthermore, our command over frameworks like React Native and Flutter ensures seamless integration and optimal app performance to meet your second priority. In regards to your third objective, we've sharpened numerous cross-platform apps before and can demonstrate tangible gains through performance metrics. We use performance tools like TestFlight to test iterative builds and ensure every feature is fully functional through basic unit or widget tests. Our commitment doesn't end with just the delivery of release-ready builds; we make ourselves available for any post-deployment support you need. You can rely on Web Crest to breathe new life into your mobile app.
$450 USD em 5 dias
3,5
3,5

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