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We are seeking an experienced mobile app developer to update and enhance our existing mobile application, available on Android (Java) and iOS (Swift/Xcode). The app is already live, and we are looking for a skilled developer to implement updates, fix bugs, and ensure smooth cross-platform functionality.
N° de projet : 40240778
130 propositions
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130 freelances proposent en moyenne $160 CAD pour ce travail

Hello, i have very rich experience developing Java/Swift based Android/iOS Applications. Share the source code pf both apps with modification details so we can discuss and start fixing/updating your apps right away. *About Me* i am a mobile applications developer and i have more than 8 years of experience developing mobile applications. i have done more than 520+ projects either local or internet based. i am confident i will provide you quality software services on time. Let's chat to proceed.
$250 CAD en 10 jours
8,9
8,9

Hello I have read your requirement to update and enhance your existing Android (Java) and iOS (Swift/Xcode) application. I can do that, and I have 8 years of experience in mobile app designing and development with backend integration. I have developed more than 200+ mobile apps with the backend till now, including maintaining and upgrading live production apps on both Google Play and the App Store. Since your app is already live, my approach would start with reviewing the existing codebase, identifying architectural gaps, performance bottlenecks, and platform-specific inconsistencies. I have strong hands-on experience in native Android (Java) and iOS (Swift/Xcode), so I can confidently handle bug fixes, UI/UX improvements, SDK upgrades, API integrations, and OS compatibility updates for the latest Android and iOS versions. I can start immediately and provide regular progress updates. Let’s improve your app’s performance, stability, and overall user experience while keeping it future-ready.
$180 CAD en 10 jours
8,0
8,0

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 update your 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
$125 CAD en 12 jours
8,0
8,0

Hello, I hope you are doing well. As an experienced mobile app developer skilled in Swift, Java, Android Studio, and Xcode, I can deliver the precise updates and refinements your live iOS and Android applications require. My approach focuses on enhancing performance, resolving bugs, and ensuring seamless cross‑platform stability without disrupting existing user experience. I will analyze the current architecture, implement structured improvements, and ensure both platforms remain fully aligned in functionality and performance. Your project demands a developer who can move confidently across both Swift and Java ecosystems, and that is exactly where my expertise stands out. I am committed to delivering clean, optimized code and reliable updates that elevate the quality of your live application. Best regards, Ahtesham
$180 CAD en 10 jours
7,5
7,5

Hi. As an Android and iOS Expert, I am very interested in your project. I am very familiar with Android Studio and Xcode. I have mobile and backend skills with 8+ years. I wish to work for you. Thanks for attention.
$50 CAD en 1 jour
7,2
7,2

I have extensive experience in Java, Mobile App Development, iPhone, Android, and Software Development, making me a great match for the iOS & Android App Updates project. The budget can be adjusted as per the project scope, and I am committed to working within your financial constraints. Please review my 15-year-old profile to see my past work. Your satisfaction is my priority, and I am ready to start working on the updates immediately. Let's discuss the project details and get started.
$175 CAD en 7 jours
7,0
7,0

With a vast experience in Mobile App Engineering and a strong background in both Android (Java) and iOS (Swift/Xcode) development, I am Ammar, the perfect fit for your project requirements. Over the years, I have delivered scalable solutions across various industries ensuring top-notch user experiences, which makes me confident that I can elevate your current app to new heights. My technical fluency extends from Frontend to Backend and Cloud deployments which grants me the ability to see the broader picture, enabling all-round improvements. Whether it's implementing updates, bug-fixing or ensuring seamless cross-platform functionality - I possess the skillset and problem-solving mindset for a smooth execution. My proficiency in leveraging third-party integrations such as Payment, SMS, Social and Video APIs would also transform your app into a more versatile and powerful tool for users. In addition to my technical expertise, I approach all my projects with an Agile management strategy which means you will have real-time information on the progress of my work through regular check-ins and code review sessions. My key focus area is creating scalable full-stack Enterprise Systems including mobile apps. Let's strike a chord between our skillsets and transform your idea into an impeccable reality through smooth communication and efficient delivery!
$140 CAD en 12 jours
6,6
6,6

Hi, Can you please share the updates and fixes which needs to be done? If you have native android/ios app then i'd love to hear back from you regarding your apps. Looking forward to hearing back from you soon. Thank You!
$249 CAD en 5 jours
6,6
6,6

Hello, I AM READY TO WORK ON YOUR EXISTING APPLICATION FOR UPDATION WORK. 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
$120 CAD en 10 jours
6,6
6,6

Hello, I came across your project and found it truly interesting. With over eight years of hands-on experience in this field, I have successfully delivered high-quality solutions to clients worldwide. My dedication to excellence is reflected in the 180+ positive reviews from satisfied clients. I’d love to bring this expertise to your project and ensure outstanding results. However, I do have a few important points I’d like to clarify to align perfectly with your vision. Let’s connect via chat so I can share relevant examples of my past work. I look forward to hearing from you. Best Regards, Divu.
$250 CAD en 4 jours
6,6
6,6

Hello, I can take over your existing Android (Java) and iOS (Swift) app, fix current bugs, and roll out updates without breaking anything in production. I will review the codebase, reproduce issues, clean up problem areas, and ship stable releases on both platforms with proper testing so everything stays in sync. Questions: – What updates and bug fixes are the top priority right now? – Can you share the app store links and give access to the repos plus Firebase or any backend tools? Let’s discuss the requirements in detail and get started. Looking forward to your response. Best regards, Kamran
$110 CAD en 2 jours
7,3
7,3

Hello I have thoroughly reviewed your project description and am confident in my ability to assist you in completing it successfully. I believe it would be highly beneficial to delve deeper into the specifics of the job to determine the most effective way forward. I am open to scheduling an interview at your convenience, and I genuinely appreciate the chance to collaborate with you on this project. Your response is eagerly anticipated, and I'm excited about the prospect of working together. Thank you for considering my proposal. Looking forward to your prompt reply! Best regards Rekha!!!
$250 CAD en 7 jours
6,1
6,1

Hello, As the founder and head of Our Software, I take immense pride in our ability to provide top-notch mobile app development services. We have a proven track record of delivering high-quality, bug-free applications that function seamlessly across multiple platforms, be it Android, iOS or otherwise. Our team is experienced in both Java and Swift/Xcode, making us an excellent fit for your project. In particular, what makes us stand out is our dedication to incorporating the latest technologies into our work. We don't just update apps; we add value by enhancing user experience and introducing innovative features that keep up with the demands of today's market. With keen attention to detail and commitment to problem-solving, we ensure not only ironing out existing issues but also minimizing future bugs through clean coding practices. At Our Software, we strive to deliver projects like yours with a "WOW" factor. We understand the importance of smooth cross-platform functionality, especially for an app already live on two major operating systems. We genuinely believe in the power of turning your dreams into reality by realizing every fine detail you envision for your app. With us, you're not just getting a developer; you're gaining a partner who will go the extra mile to make your business reach new heights though this app update project. Thanks!
$130 CAD en 3 jours
6,2
6,2

Hi there To update a live mobile app safely, the most critical part is understanding the current architecture before touching features. Production apps require careful iteration—especially when maintaining parity between Android (Java) and iOS (Swift). I would begin with a structured code audit to identify technical debt, SDK compatibility issues, and any platform-specific inconsistencies. From there, I’ll implement updates and bug fixes incrementally, validating each change against regression tests and real-device builds. If required, I’ll also ensure compliance with the latest App Store and Google Play policies before release. After reviewing your repositories and update list, I’ll provide a clear milestone plan with fixed pricing and timeline.
$140 CAD en 7 jours
5,9
5,9

Hello There!!! ★★★★ ( iOS & Android App Updates ) ★★★★ I understand you need an experienced developer to update and enhance your existing mobile app on Android (Java) and iOS (Swift/Xcode), ensuring smooth cross-platform functionality, bug fixes, and feature improvements while keeping the current user experience intact. Services mentioned here based on project details ⚜ Review and fix existing bugs on Android and iOS versions ⚜ Implement requested updates and enhancements efficiently ⚜ Ensure seamless cross-platform functionality and stability ⚜ Optimize app performance and reduce crashes or slowdowns ⚜ Test thoroughly across devices and OS versions ⚜ Provide clear, well-commented code for future maintenance ⚜ Deliver updated builds ready for App Store and Play Store submission With 9+ years of mobile app experience, I’ve worked on both Java and Swift projects, handling updates, debugging, and performance optimizations. I’ll ensure your app is stable, up-to-date, and user-friendly across platforms, with clear documentation for ongoing maintenance. Warm Regards, Farhin B.
$156 CAD en 15 jours
6,5
6,5

Hi, there, I am an experienced mobile app developer with expertise in Swift, Java, Xcode, and Android Studio. I have successfully updated and enhanced various mobile applications, ensuring seamless cross-platform functionality. ✅ For your project, I will start by conducting a thorough analysis of the existing app to identify areas for improvement. ✅ Next, I will implement bug fixes and enhancements to enhance user experience. ✅ Following that, I will rigorously test the updates on both iOS and Android platforms to ensure optimal performance. ✅ Once testing is complete, I will deploy the updates and provide ongoing support to address any issues that may arise. ✅ Finally, I will optimize the app for better performance and user engagement. I look forward to working with you. Best Regards. Brayan
$200 CAD en 3 jours
5,5
5,5

Hi Errol, I have extensive experience in mobile app development and specialize in updating and enhancing existing applications. I am proficient in Java, Swift, and Xcode, ensuring seamless cross-platform functionality for your Android and iOS app. Let's discuss further to understand your requirements in detail. Regards, Sai Bhaskar
$160 CAD en 5 jours
5,5
5,5

Hi there, I’m senior Mobile developer. I have experience in android Java and ios swift obj-c i can work on your app lets connect to discuss more about it and get it started. Thank you.
$140 CAD en 7 jours
5,4
5,4

Hi there,Good morning I am Talha. I have read you project details i saw you need help with Software Development, iPhone, Xcode, iOS Development, Java, Mobile App Development, Android Studio, Swift, Android and Android App Development I am writing to propose an innovative approach to tackle your project. Our proposal centers on delivering creative and effective solutions that will set your project apart. We will present fresh, out-of-the-box ideas that align with your project's objectives, demonstrating how we can achieve remarkable results. Please note that the initial bid is an estimate, and the final quote will be provided after a thorough discussion of the project requirements or upon reviewing any detailed documentation you can share. Could you please share any available detailed documentation? I'm also open to further discussions to explore specific aspects of the project. Thanks Regards. Talha Ramzan
$30 CAD en 10 jours
5,5
5,5

✋ Hi There!!! ✋ The Goal of the project:- UPDATE AND ENHANCE AN EXISTING IOS AND ANDROID MOBILE APPLICATION, FIXING BUGS AND ENSURING CROSS-PLATFORM STABILITY. I have carefully read and understood your project description and can efficiently implement updates while maintaining smooth functionality on both platforms. I am the best fit because I have extensive experience in mobile app development, cross-platform bug fixing, and performance optimization. Three points that directly match your requirements: 1. Update existing Android (Java) and iOS (Swift/Xcode) apps. 2. Fix bugs and ensure smooth cross-platform functionality. 3. Maintain clean, well-documented code with full source delivery. I provide basic services including UI design, database management, testing, and full source code delivery. I have 9+ years experience as a full stack developer and have successfully updated and optimized live mobile apps across Android and iOS. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$110 CAD en 10 jours
5,5
5,5

Black Creek, Canada
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