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I need an experienced mobile developer to take my existing cross-platform app through one more round of polish and get the updated build live on Google Play and the Apple App Store. Performance tuning is the top priority. I want noticeably faster launch times and rock-solid stability before the update rolls out. All store assets, screenshots, descriptions, certificates, and privacy policies are already prepared, so you can focus on the code, build, and submission workflow. Your role will be to: • Profile the current Android and iOS codebases, pinpoint bottlenecks, and implement fixes that improve speed and reduce crashes or battery drain. • Resolve the issue that’s blocking me from uploading fresh builds and ensure each store’s requirements—signing, icons, versioning, privacy labels, review notes—are met. • Compile, sign, and submit release builds, then monitor and respond to any Google Play or App Store review feedback until the update is approved. Acceptance criteria • Both stores approve the new version and it appears live. • Crash-free sessions ≥ 99.5 % in Play Console and App Store Connect. • Measurable reduction in launch time versus the current production build. When you reply, link to at least two apps you have personally shipped on both stores and briefly describe the profiling tools you’ll use—Android Studio Profiler, Xcode Instruments, Firebase Performance, or similar. I’m ready to start as soon as I find the right partner.
Proje No: 40068120
40 teklifler
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Son aktiviteden bu yana geçen zaman 3 ay önce
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Hi, I’m Mst Habiba Hasan, I am a Senior Full-Stack Developer with more than 10 years of experience. I can help you with: — Website development — Mobile app development — Web app development — Backend development — AI and Machine Learning development — Maintenance of existing projects — UX/UI design — Browser extensions — DevOps — Solution Architecture — Consulting — MVP development Technologies I've worked with include but are not limited to: * Python/ Django * ReactJS / React Native (including React Native Web) / Expo / Express / Redux / NextJS * Javascript / Typescript / Flow types * NodeJS / Angular / Vue.js * MongoDB / SQL (MySQL / MariaDB / PostgreSQL) / Redis * OAuth2 / Keycloak / Auth0 / Cognito * Kubernetes / Helm / Docker / Ansible / Terraform / Amplify / Firebase * AWS / Azure / GCP / on premises * RESTful / GraphQL / OpenTracing / AMQP (RabbitMQ) Contact me today to get started! I’m excited to collaborate and bring your vision to life. Best regards, Mst Habiba Hasan
$120 USD 7 gün içinde
0,0
0,0
40 freelancer bu proje için ortalama $163 USD teklif veriyor

Hello Client, Greeting of the day!!!! I read your job description I have sound of five years plus experience in App development. I have been DEVELOPED 35+ Apps, three taxi apps, Two socials apps and restaurant apps based on GPS location and notification functionality and based on different domain like sports, Health, GYM, personal business and social etc I have testing team for testing apps. I think I am strongest person for doing this job and provide the quality product with testing. I am always available for your support. Thanks Sr. Mobile Developer
$60 USD 1 gün içinde
6,7
6,7

Hi there, ★★★ Mobile App Development / Android App Development Expert ★★★ 7+ Years of Experience ★★★ To complete the project and ensure a successful update to your app, I will follow a structured approach: 1. Profile the existing codebases on both Android and iOS to identify performance bottlenecks (10 hours) 2. Implement fixes to improve speed and reduce crashes (15 hours) 3. Resolve upload issues for fresh builds and ensure compliance with store requirements (5 hours) 4. Compile, sign, and submit the release builds to both stores (8 hours) 5. Monitor feedback from the app stores and address any issues until approval (5 hours) What I need from you: 1. Access to the current codebase and any relevant documentation 2. Details of the specific performance issues you have encountered 3. Any existing analytics data that highlights areas of concern I look forward to connecting at your convenience to ensure the project's success. Best Regards, TechPlus Team
$500 USD 6 gün içinde
5,9
5,9

Hi, I can take your existing cross-platform app through a focused performance polish and successfully deliver the updated build to both Google Play and the Apple App Store. I’ll profile launch time, runtime performance, memory usage, and stability using Android Studio Profiler, Perfetto, Firebase Performance/Crashlytics, and Xcode Instruments (Time Profiler, Allocations, Energy Log) to identify and fix bottlenecks. I’ll address the issue currently blocking new uploads, ensuring signing, certificates, provisioning profiles, versioning, icons, and store requirements are fully compliant. From there, I’ll compile, sign, and submit release builds for both platforms and actively manage store review feedback until approval. My goal is a measurable reduction in launch time and a crash-free session rate of at least 99.5% in both Play Console and App Store Connect. I’ve worked on multiple cross-platform apps released on both stores and can share direct links privately upon request. I’m ready to start immediately and focus on speed, stability, and a smooth release process. Kind regards.
$140 USD 7 gün içinde
5,8
5,8

Hi Nezam, I will optimize your existing cross-platform mobile app by profiling the codebases, addressing performance bottlenecks, and ensuring compliance with store requirements for a faster launch time and improved stability. I have experience in successfully submitting apps to Google Play and the Apple App Store. Let's discuss further. Regards, Sai Bhaskar
$80 USD 2 gün içinde
5,4
5,4

Hi, I’m an expert mobile developer with 9+ years of experience shipping cross-platform apps and optimizing performance for both Android and iOS. Positive user experience is my priority, and I focus on speed, stability, and seamless store submissions. Here's how I can help: * Profile your app using Android Studio Profiler, Xcode Instruments, and Firebase Performance to pinpoint and fix launch delays, crashes, and battery issues * Resolve build-blocking issues, handle code signing, versioning, icons, privacy labels, and all store submission requirements * Compile, sign, and submit release builds, then monitor and respond to any review feedback until approval * Ensure measurable improvements in launch time and maintain crash-free sessions ≥ 99.5% Could you confirm which cross-platform framework your app is built on (Flutter, React Native, or another)? Also, are there any known third-party SDKs that currently affect performance?
$140 USD 7 gün içinde
4,8
4,8

Hello Nezam M., I am Maryam Abbas, a mobile app developer with 4 years of experience in Android and iOS development. I have carefully read your project requirements and am confident in my ability to optimize and publish your mobile app. To achieve this, I will thoroughly profile the current codebases, identify and address performance bottlenecks, and ensure compliance with store requirements for a seamless submission process. My track record of delivering successful projects and positive client feedback over the years speaks to my expertise in this field. You can review my portfolio at https://www.freelancer.pk/u/maryam951 to see examples of my work. Let's discuss your project further. Best regards, Maryam Abbas
$30 USD 2 gün içinde
4,8
4,8

As an experienced mobile developer with over 9+ years in the industry, I understand the need for a polished, optimized and stable mobile app. Having been responsible for developing and shipping multiple applications across both Google Play Store and Apple App Store, including [App 1] and [App 2], I am confident in my abilities to meet your project’s requirements. To ensure exceptional performance, I intend to leverage powerful profiling tools like Android Studio Profiler, Xcode Instruments, Firebase Performance that have proven effective in identifying performance bottlenecks and resolving them efficiently. At the end of the optimization process, you'll experience enhanced speed, lesser crashes, and minimal battery drain. I believe what sets me apart from other candidates is not just my technical expertise but also the additional benefits I offer. With our team's deep understanding of cross-platform app development combined with my affordable pricing structure and free support for three months after delivery, you'll get a comprehensive value package for your project. Let's come together and transform your cross-platform app from good to exceptional!
$140 USD 7 gün içinde
5,3
5,3

Hello Client, My experience in Android app development includes designing user interfaces, integrating with backend services, and testing and debugging. I have worked on several successful Android projects in the past, and I am familiar with the latest best practices and technologies in the field. brief overview of some different domains where Android app development is used. Social Media: Android apps are used extensively in the social media space. Popular social media platforms like Facebook, Instagram, and Twitter all have Android apps that allow users to access their accounts and share content. E-Commerce: Android apps are also used in the e-commerce space, allowing businesses to offer mobile shopping experiences to their customers. Apps like Amazon, eBay, and Walmart allow users to browse products, make purchases, and track their orders on their Android devices. Finance: Android apps are used in the finance industry to offer banking, investing, and budgeting tools to users. Apps like Mint, Robinhood, and PayPal allow users to manage their money, invest in stocks, and make payments from their Android devices. Education: Android apps are used in the education space to provide learning resources and tools to students. Apps like Duolingo, Khan Academy, and Coursera offer educational content in a variety of subjects, and allow users to learn at their own pace on their Android devices. I am always available for your support. Thanks Sarika
$80 USD 2 gün içinde
3,2
3,2

Our team at Forsova will carefully profile your Android and iOS codebases with advanced tools such as Android Studio Profiler, Xcode Instruments, and Firebase Performance to identify and resolve performance bottlenecks, ensuring faster launch times and superior stability. We will address any build submission blockers, manage signing, versioning, and compliance, then submit and monitor your app releases until approval is secured on both Google Play and the App Store. Our commitment is to meet your acceptance criteria with a smooth, crash-free update that is demonstrably faster for your users.
$250 USD 10 gün içinde
3,3
3,3

I bring 13 years of professional experience delivering high-quality results. I have strong expertise in all the required skills listed for this project. My approach ensures accuracy, clear communication, and timely delivery. I am confident I can exceed your expectations with efficient, reliable work. Looking forward to contributing to your project—ready to begin immediately.
$140 USD 7 gün içinde
2,3
2,3

Dear Client, I have read your job description carefully and interested in your project. I can take your existing cross-platform app, optimize performance, and handle the full build and submission workflow for Google Play and the App Store. I will profile the code using Android Studio Profiler, Xcode Instruments, and Firebase Performance, fix bottlenecks, reduce crashes/battery drain, and ensure signing, icons, versioning, and privacy labels meet store requirements. I will compile, submit, and monitor both stores until approval, targeting ≥99.5% crash-free sessions and measurable faster launch times. I’ve personally shipped apps on both stores, including [App 1 link] and [App 2 link], handling full optimization and submission. Thanks, Roman,
$100 USD 3 gün içinde
1,6
1,6

Hello Nezam, I understand you need a skilled mobile developer to optimize your cross-platform app and successfully push an updated build to Google Play and the Apple App Store. With extensive experience in performance tuning and submitting apps to both platforms, I am confident in delivering noticeable improvements in launch times and stability. In my previous projects, I've successfully enhanced app performance, achieving over 99.5% crash-free sessions. One of the key methods I employ is profiling with tools like Android Studio Profiler and Xcode Instruments, enabling me to identify and rectify bottlenecks effectively. ✅My Plan: - Assess the current codebases to pinpoint all performance bottlenecks. - Implement fixes to improve speed and stability while reducing battery drain. - Resolve any issues preventing fresh builds from being uploaded. - Ensure compliance with all submission requirements for Google Play and the App Store. - Submit the builds and monitor feedback until approval. Could you provide details on any specific challenges you've faced during previous updates? Also, are there particular profiling tools you prefer? Best regards, Hongqiang Chen
$160 USD 2 gün içinde
0,0
0,0

Hi There Nezam M., Good evening! I am professional mobile software engineer with skills including Mobile App Development, iPhone, Android App Development, Performance Tuning, Android, App Store Optimization, iPad and iOS Development. Please send a message to discuss more about this project. Your Sincerely
$30 USD 3 gün içinde
0,0
0,0

Dear Nezam M.. Thanks for sharing your project! I’ve worked on similar projects before and have hands-on experience with tasks like yours. I’ve got a bunch of hands-on experience with Mobile App Development, App Store Optimization, iPad, iPhone, Performance Tuning, Android App Development, Android and iOS Development, so I’m comfortable handling everything you’re looking for. If you want to see my work quality, please feel free to check my reviews from previous clients. I can also show examples of previous projects and walk you through my workflow, including clear communication, clean execution, and a professional approach from start to finish. Feel free to message me anytime. I’d be happy to discuss your project and get started. Best Regards, Huy.
$155 USD 4 gün içinde
0,0
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Hi there, After studying your assignment, I've prepared the following options. I look forward to your feedback. Option A: I will optimize the performance of your existing cross-platform app, focusing on faster launch times and stability improvements to meet store requirements. Option B: I will polish the codebase, implement fixes, and handle the submission workflow for Google Play and Apple App Store. Let's discuss in detail through chat.
$30 USD 4 gün içinde
0,0
0,0

Hello, With my extensive experience of over 8 years in software engineering, I possess a unique combination of skills that make me an ideal fit for your project. As a highly skilled C++ and Python developer who understands the full stack, I have a deep understanding of profiling tools such as Android Studio Profiler, Xcode Instruments, and Firebase Performance. This proficiency in mobile app development is paired with my background in mechanical and electrical engineering which makes me systematic and detail-oriented; crucial qualities to profile existing codebases, pinpoint bottlenecks, and implement fixes with precision. One major advantage I bring to the table is problem-solving; your challenge of resolving issues hindering fresh builds and ensuring compliance with both stores' requirements aligns perfectly with my skillset. Moreover, my background in DevOps and strong familiarity with AWS, Docker, CI/CD will enable me to compile, sign, submit release builds smoothly and address feedback promptly and efficiently followed by submission workflow at Google Play or App Store. To elaborate on my past work experience - I'd like to draw your attention to the two apps I personally shipped on both stores. "Smartify" is an app that revolutionized mobile computing by leveraging computer vision technology that I built alongside a team of talented developers. The next app is "FitnessPal" - a health tracking application serving millions of u Thanks!
$170 USD 5 gün içinde
0,0
0,0

Hi, I can assist in optimizing and publishing your mobile app to Google Play and the Apple App Store. My role includes profiling the current codebases to enhance performance, resolve upload issues, and ensure compliance with store requirements. I have experience shipping apps on both platforms and will utilize tools like Android Studio Profiler and Xcode Instruments for profiling. Let's connect to discuss further and initiate this project promptly. Thank you!
$150 USD 7 gün içinde
0,0
0,0

Hi there We would like to grab this opportunity and will work till you get 100% satisfied with our work. Please come over chat and discuss your requirement in a detailed way. Regards
$250 USD 7 gün içinde
0,0
0,0

Hi Nezam, I'm an experienced Full-Stack Developer specializing in mobile app development and optimization. I understand the importance of performance tuning and stability for app success. With 12+ years of experience, I have a track record of delivering high-performing applications. I will profile the codebases, identify and fix bottlenecks to enhance speed and stability. I'll also handle the build submission process, ensuring adherence to store requirements for a smooth update rollout. What specific performance metrics do you have in mind to measure the impact of speed optimization and stability enhancements on your app's performance?
$160 USD 18 gün içinde
0,0
0,0

✅Hi there! Hope you are doing well! I understand your need for an experienced mobile developer to optimize your existing cross-platform app and ensure a smooth launch on Google Play and the Apple App Store. With my background in mobile app development and a keen focus on performance tuning, I can guarantee noticeably faster launch times and improved stability for your app. The most critical part of this project is to accurately profile the current codebases and address any bottlenecks to ensure a crash-free experience. Additionally, resolving the upload issues and meeting store requirements are essential for a successful rollout. To achieve this, I will utilize tools like Android Studio Profiler and Xcode Instruments to identify performance bottlenecks, implement fixes, and ensure compliance with the app stores' guidelines effectively. I am excited about the opportunity to assist you in this project and confident in delivering exceptional results. Thanks, Maria
$180 USD 3 gün içinde
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0,0

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