Optimize App & Upgrade Authentication

@irfanui

Hi, I reviewed your project: Optimize App & Upgrade Authentication. I can help you build a professional mobile application with clean UI, secure API integration, authentication, push notifications, payments, backend/admin support, testing, and release guidance. I have experience with Android, iOS, Flutter/React Native workflows, Laravel/Node.js backends, APIs, and production deployment. Please message me to discuss app screens, features, platform requirements, and timeline. Portfolio: https://www.freelancer.com/u/irfanui Regards, Mohammad 4th Dimension Partners

@jayantkumar314

I have extensive experience optimizing live iOS and Android applications, improving authentication flows, and preparing production builds for both stores. I’ll begin by profiling startup time, API calls, memory usage, rendering, navigation, and battery-intensive background tasks. I’ll then refactor the highest-impact areas without changing the existing design or features, modernize authentication using secure token storage, OAuth/social login, refresh-token handling, and improved session management. Testing will cover performance benchmarks, authentication edge cases, regression testing, real-device validation, and release builds for the latest Xcode and Android Studio versions. After reviewing the codebase, I’ll provide a clear delivery schedule and can support any store-review or post-launch issues.

@abhishek060

Hello, I'd be happy to optimize your existing iOS and Android application while preserving its current functionality and user experience. My approach is straightforward: 1. Audit the application using Xcode Instruments, Android Profiler, and network analysis to identify performance bottlenecks. 2. Optimize high-impact areas such as rendering, API calls, state management, image loading, and background tasks to improve load times, screen transitions, and battery efficiency. 3. Modernize the authentication flow by simplifying sign-in/sign-up, implementing secure token storage, and integrating OAuth/OpenID Connect where appropriate, along with seamless social sign-in while ensuring compatibility with the latest platform requirements. 4. Perform regression, performance, and real-device testing before preparing production-ready builds for App Store and Google Play submission. I'll also provide post-launch support and, after reviewing the existing codebase, a realistic timeline and milestone plan. One quick question: is the application built with Flutter, React Native, or native iOS/Android? Thank you, and I look forward to discussing your project. Regards Abhishek

@iimtpradeepdash

I audit mobile apps by profiling the runtime (Flutter/Dart DevTools, React Native Perf Monitor), tracking slow Renders, large assets, memory leaks, and repeated API calls. That sets the hitlist for refactoring—usually heavy screens, overdraw, and misused state management are the worst offenders. For authentication, I replace legacy flows with Firebase Auth (email/mobile/social) or Auth0, trimming steps and deep-linking SSO for both iOS and Android. Passlib/Argon2 for password hashing if needed, Apple/Google login with one-tap for both platforms. Tests: Unit/Widget tests, device testing on TestFlight and Play Console, then App Store/Play Store submission. Does your current app use Flutter or React Native? Pradeep

@RajAbhisek

Noticed you need performance profiling and an auth modernization for both iOS and Android without touching existing features — well-defined scope. We've done exactly this: tightened cold start times with Xcode Instruments + Android Profiler, reduced frame jitter, and replaced legacy auth with biometrics/OTP/SSO (OAuth 2.0/PKCE, Sign in with Apple, Google Sign-In) on live apps. Approach: profile first to find real bottlenecks, refactor only high-impact sections, then upgrade auth with a smooth migration path for existing users. All builds will pass the latest App Store and Play Store review requirements. Timeline: 2 weeks for the perf + auth pass, 1 week for store builds and testing. Ping me with your app details and we'll scope it precisely.

@DigitalNightOwl8

Hello, Greetings , 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 Mobile App Development, Android, Mobile App Testing, iPad, Android App Development, iPhone, iOS Development and App Development. 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

@ashinnd84

Hello there, we are a team of Full Stack Web and Mobile App Developers and we can do this project in no time. Thanks Ashish Kumar.

@Mayanks010

Hi, Thanks for sharing your project. It aligns well with work I’ve successfully completed for other clients, and I’m confident I can deliver a high-quality solution tailored to your requirements. Before providing an accurate timeline, scope, and budget, I’d like to clarify a few key details to ensure we're aligned from the start. Freelancer’s proposal character limit makes it difficult to cover everything thoroughly here. If you're available, let's connect via chat. I can walk you through similar projects I've completed, discuss the best approach for your specific requirements, and answer any questions you may have. Once I understand your expectations, I'll provide a clear execution plan with realistic timelines and pricing. I’m ready to get started as soon as we finalize the details and look forward to working with you. Best regards, Mayank Sahu

@aprkdream

Hi, I understand that your current app version is live but needs improvement for better performance and modernized authentication. I see you want to optimize load times, screen transitions, and battery drain without changing the existing feature-set or design language. You also want to harden security, shorten sign-in/sign-up steps, and make social/SO sing-on options seamless across both platforms. To identify current bottlenecks, I'd use profiling tools like Instruments for iOS and Android Studio's built-in profiling features. This will help me pinpoint areas where code is slow, memory-intensive, or network-heavy. I'd analyze CPU and memory usage, network requests, and database queries to understand the root causes of performance issues. Once bottlenecks are identified, I'd refocus on rewriting or refactoring the app's architecture to use a more efficient and modern approach. This might involve migrating to a newer version of the framework, optimizing database queries, or implementing caching mechanisms. For authentication, I'd integrate a secure and reliable third-party library to handle social login and SSO. My experience with Laravel, Node.js, and REST API development will help me understand your app's backend and integrate it with the frontend for a seamless user experience. I've worked on similar projects, including payment integrations with Stripe, Razorpay, and PayPal, which will come in handy for this project. I'd deliver a clear, step-by-step plan for the project, including code refactoring, testing, and deployment. The outcome will be a faster, more secure, and more efficient app that meets the latest app store standards. Before we start, can you provide more information about the current authentication flow and the existing backend architecture? This will help me provide a more accurate estimate for the project. Looking forward to discussing this project further.

@albertc1996

I’d start by profiling the current builds instead of guessing. On React Native apps, slow screens and battery drain can come from very different places—API calls, re-renders, background tasks, image handling, or native modules. Then I’d refactor only the parts that show real impact, update the auth flow with secure token storage and the required social providers, and test on real iOS/Android devices before store submission. I’d also verify the current framework versions early, because “latest Xcode and Android Studio” can expose dependency issues before the actual optimization work starts.

@kuldeepsharma30

Hi, I can optimize your existing iOS and Android app while keeping the current features and design unchanged. **My approach:** **1. Diagnostics** * Profile startup time, UI rendering, memory, CPU, battery, and network usage. * Use Xcode Instruments, Android Profiler, and Firebase Performance Monitoring to identify bottlenecks. * Review architecture, API calls, caching, and authentication. **2. Performance Optimization** * Refactor high-impact modules. * Improve app launch speed, API efficiency, caching, image loading, and background tasks. * Eliminate memory leaks and optimize screen transitions. * Update dependencies for the latest Xcode and Android Studio. **3. Authentication** * Implement OAuth 2.0/OpenID Connect. * Integrate Sign in with Apple, Google Sign-In, and other required SSO providers. * Secure token storage with Keychain (iOS) and Android Keystore. * Improve session management and optional biometric login. **4. Testing** * Unit, integration, UI, regression, and performance testing. * Validate on multiple devices and OS versions. * Deliver production-ready builds and assist with App Store & Play Store submission. **Timeline** * Audit: 2–3 days * Optimization & authentication: 5–7 days * Testing & deployment: 2–3 days **Total:** 9–13 business days. I also provide 30 days of post-launch support for bug fixes, deployment assistance, and resolving any store review issues. Thank you & Best Regards Naveen

@modesorehari6

Hi there, I'm Malix Azis. I'll first profile the app using native performance tools to identify bottlenecks, then refactor only high-impact areas while preserving the current UI and features. For authentication, I recommend Firebase Auth or Auth0 with Apple and Google Sign-In, followed by thorough unit, integration, and real-device testing before preparing production builds for both stores. I can deliver in 2 to 3 weeks with post-launch support. Could you share whether the app is built with Flutter, React Native, or native iOS and Android? I have strong experience with iOS, Android, Flutter, React Native, Firebase, REST APIs, Node.js, PostgreSQL, and performance optimization, delivering production-ready mobile applications. I can provide you with perfect results and start immediately after we finalize the plan. Let's discuss the details via chat. Best regards, Malix

@dushyant317

Hello, With 13+ years of experience in iOS and Android app optimization, I can analyze your existing codebase, identify performance bottlenecks, optimize rendering, memory usage, and battery consumption, while modernizing the authentication flow with secure OAuth/Firebase/Auth0 integration. I'll provide production-ready builds for both App Store and Google Play, backed by comprehensive testing, documentation, and post-launch support to ensure a smooth release. Thank you!

@mayankinnovative

As an experienced mobile app developer with a track record of optimizing and stabilizing applications, I am confident that I am the best fit for your project. Drawing from my 20+ years of experience with PHP-based platforms like Laravel and WordPress— which involves fixing anything from performance bottlenecks to the most complex backend issues—I have developed a results-oriented approach that aligns well with your goals. For your app's optimization, I propose a systematic diagnostic process leveraging powerful tools and methodologies to pinpoint any existing bottlenecks. My focused approach will ensure a well-informed identification and solution strategy for inefficiency problems, empowering your app to load faster, transition smoother, and consume less battery while retaining its core features undisturbed. Regarding the user-authentication revamp, I understand the importance of modernizing security standards while keeping user experience seamless. I will apply my extensive knowledge in backend development to refactor high-impact sections of code with future-proof libraries and frameworks, ensuring they remain in sync for both iOS and Android platforms. My commitment to clean, maintainable solutions ensures that your app will compile seamlessly for updated releases in App Store/Play Store without compromising security.

@huzaifa1332

Hi! I can optimize your live app’s performance and modernize your authentication flow to pass store reviews flawlessly. 1. Diagnostics & Bottlenecks I will use Xcode Instruments and Android Profiler to trace memory leaks, thread blocking, CPU spikes, and layout rendering delays causing battery drain. 2. Refactoring & Optimization Implement efficient image caching and asset compression. Refactor heavy state management and enable lazy loading for ultra-smooth screen transitions. 3. Secure Auth Stack Standardize on OAuth 2.0 / JWT protocols for secure backend communication. Integrate native Apple Sign-In and Google One Tap for frictionless, secure SSO. 4. Testing & Delivery Rigorous regression testing on physical iOS/Android devices via TestFlight and Firebase App Distribution before submission. Timeline: 2–3 weeks | Includes 2 weeks free post-launch support. Let's connect!

@rishi9343

I will optimize the app's performance by identifying bottlenecks through diagnostic methods, then refactor high-impact sections for faster load times and smoother screen transitions, while modernizing the user-authentication flow with secure libraries for social and single-sign-on options, ensuring clean compilation for Xcode and Android Studio, and a successful App Store and Play Store review, resulting in a production-ready build for both store.

@pavlof555

★★★★★★★★★★★★★★★★★ Dear Respect Client ★★★★★★★★★★★★★★★★★ Hi, My name is ⭐Pavlo⭐. I can start your project right now and optimize your Android and iOS apps by improving performance, reducing resource usage, and upgrading the authentication flow with secure, future-ready implementation. I have experience profiling mobile applications, refactoring high-impact code, integrating modern authentication solutions, and delivering production-ready builds that meet App Store and Play Store requirements. Could you share whether your app is native or built with a cross-platform framework so I can choose the most effective optimization and authentication strategy? Looking forward to working with you. Best regards!

@Riteshn48

I recently worked on a live cross-platform mobile app where I optimized slow loading screens, reduced API response times, fixed memory leaks, improved app startup speed, and implemented secure Google and Apple Sign-In with JWT authentication. After optimization, the app became smoother, consumed less battery, and was successfully approved on both the App Store and Google Play. I have 4+ years of experience optimizing iOS and Android applications, improving performance, and implementing secure authentication systems. I would be happy to discuss your application, review the existing codebase, and deliver production-ready builds with improved performance, secure authentication, and reliable post-launch support. Regards Ritesh

@webmaster020

Hi there, I am an experienced developer ready to optimize your iOS and Android apps for peak performance and modernize your authentication stack. My approach begins with a comprehensive diagnostic audit using tools like Xcode Instruments and Android Profiler to pinpoint bottlenecks in rendering, memory usage, and battery drain. I will refactor high-impact code sections to ensure smoother transitions and faster load times, while implementing a secure, industry-standard authentication stack using OAuth 2.0 and OpenID Connect to provide seamless social and SSO integration. I propose a milestone-based workflow: a initial performance analysis report, followed by iterative development phases for optimization and authentication upgrades, and finally a rigorous testing cycle including automated UI tests and pre-submission manual QA to guarantee App Store and Play Store compliance. I am committed to delivering production-ready, highly stable builds and will provide full technical documentation and 30 days of post-launch support. I am ready to start immediately and would appreciate access to the source code to begin the initial audit. Best regards, Ashish