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I need an experienced iOS developer to integrate new functionalities into our existing app. Key Requirements: - Add innovative and useful features - Ensure seamless integration with current system - Maintain high performance and security standards Ideal Skills and Experience: - Proven iOS development background - Strong knowledge of Swift and Objective-C - Experience with app feature integration - Portfolio showcasing similar past work Please include relevant past work in your application.
Project ID: 40440583
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59 freelancers are bidding on average ₹101,492 INR for this job

Hello, Your project caught my attention, and I'd love to help you build it the right way. I'm Dr. Rajesh Rolen, CEO of Microlent Systems — a 70+ member software company with 15+ years of experience delivering custom web apps, mobile apps, SaaS platforms, AI-powered systems, automation tools, and enterprise software for clients worldwide. Based on your requirement, here's how we typically approach projects like yours: - Deep-dive into your business goals before writing a single line of code - Propose the right tech stack and architecture for scale and maintainability - Share weekly demos and progress updates — no black-box development - Deliver clean, documented, production-ready code you fully own - Provide post-launch support and enhancements as your product evolves Why Microlent: - Full in-house team — developers, QA, UI/UX, PMs (no freelancer middlemen) - Strong expertise in modern stacks: React, Node.js, .NET, Python, AI/ML, cloud - Transparent communication via your preferred channel (Slack, Teams, email) - Flexible engagement: fixed-price, hourly, or dedicated team - Long-term partnership mindset — many of our clients have been with us 5+ years I'd love to jump on a quick call to understand your vision better and share a tailored approach, timeline, and budget. I'm available at your convenience. Looking forward to building this with you. Best regards, Dr. Rajesh Rolen CEO – Microlent Systems Custom Software & SaaS Development
₹112,500 INR in 7 days
9.4
9.4

Hi, We can help you extend your existing iOS app by integrating new features while keeping the current system stable, fast, and secure. We are experienced in Swift and Objective-C development and can smoothly work within existing codebases without disrupting current functionality. We will: • Add and integrate new features cleanly into your existing architecture • Ensure seamless compatibility with current app flows and UI • Maintain high performance and security standards throughout implementation • Follow Apple best practices for stability and App Store compliance • Test thoroughly across supported iOS versions before delivery We’ve worked on similar feature upgrades and integrations in existing iOS applications, focusing on stable expansion rather than full rebuilds. We can start immediately after reviewing the current codebase. If you are not happy with the work, you do not pay. We will treat it as a free consultation with no obligation. Regards Interconnect Team
₹112,500 INR in 7 days
6.8
6.8

Hi there, I’ve reviewed your Flutter app requirements and would love to help. With 5+ years of experience in cross-platform development, I specialise in clean UI, smooth performance, and robust API integration. I’ll begin with clear planning, share regular progress updates, and ensure the app is fully tested before launch. Let’s connect to discuss your vision — I’m ready to get started! Best, Bhargav Flutter Developer | Android & iOS Expert
₹75,000 INR in 7 days
6.9
6.9

Hello there, I will integrate the new functionalities into your iOS app — handling feature development, testing, and deployment while keeping performance and security tight throughout. One thing I will prioritize early: profiling the existing codebase with Instruments before adding anything new. This establishes a performance baseline so we can measure the exact impact of each feature on memory usage, launch time, and battery draw — catching regressions before they reach users rather than after. Questions: 1) Which iOS versions does the app currently support, and is the codebase primarily Swift, Objective-C, or a mix? 2) What specific features are you looking to add — or is scoping those features part of the engagement? I am happy to share relevant examples in our chat. Ready to start whenever you are. Kamran
₹85,162 INR in 25 days
7.4
7.4

Hi there, I can help you integrate the new functionalities into your existing iOS application while making sure the current flow, performance, and stability of the app remain unaffected. I have worked on multiple Swift and Objective-C based applications where feature enhancement, API integrations, and production-level app maintenance were part of regular development work. I will first review the existing architecture and current codebase, then integrate the new features in a clean and scalable way while maintaining security and smooth user experience. I would request to connect once so I can understand the current app structure and the exact features you are planning to add. Thanks, Rahul A.
₹82,000 INR in 7 days
6.8
6.8

As an accomplished software development company, we have consistently proven our mettle in crafting innovative and value-adding features for iOS apps, making us a perfect fit for your project. Our proficiency extends across Swift and Objective-C, ensuring seamless integration that won't compromise the app's performance and security. The success of our strategies is backed by a solid portfolio demonstrating how we've transformed existing mobile solutions to meet evolving needs. We understand the need for continuous improvement in the highly competitive tech space; hence, as your chosen partner, we promise to bring fresh perspectives to your app while catering to your specific requirements. Our skill set also encompasses RESTful API development and their meticulous integration with mobile platforms – a vital aspect for your project's success. What sets us apart is our end-to-end approach: we don't just patch up code. We take time to comprehend your unique business goals and design comprehensive solutions that align. With our proven record of high client satisfaction and retention, you can trust us to deliver results that transcend mere functional upgrades - but enhancements that coherently harmonize with your app's architecture. Let SoftwareLinkers be your reliable go-to iOS developer.
₹140,000 INR in 24 days
3.8
3.8

Regarding your project, I have a quick question: Could you share some details about the app's current architecture (e.g., MVC, MVVM) and whether the new functionalities will require backend API changes? This helps in planning for seamless integration. My initial thought is to approach this using Swift and SwiftUI to ensure modern, high-performance components, handling the seamless integration by creating modular and extensively tested code that respects your existing patterns. I previously tackled a similar challenge while working on a large-scale social app where I integrated a new real-time chat module into a mature codebase, focusing on maintaining performance and stability. Let's connect to discuss the architecture. Regards, Philip O.
₹75,000 INR in 7 days
3.3
3.3

Hey, I can help, and we can get started right away. This kind of feature expansion work is actually where I enjoy stepping in because it is all about improving an existing system without breaking its rhythm. I have 6 years of experience with iOS Development Swift and Objective C and I am confident integrating new features into live apps while keeping performance and stability intact. I will review your current codebase, design clean integration points, implement the new functionalities, and ensure everything works smoothly with your existing architecture across devices. I will use native iOS patterns with Swift based modular components, secure data handling, and performance focused integration practices and I’ll be around waiting for your reply so we can start enhancing the app.
₹112,500 INR in 7 days
2.2
2.2

As someone who has spent over 6 years in AI development and full-stack engineering shipping real products for real businesses, I proudly offer my services to enhance your iOS app with new functionalities. From my portfolio, you can see the numerous successful projects I've delivered, ranging from developing an AI sales automation system and advanced industrial desktop app, to creating voice-enabled cognitive health apps. Each of these projects required me to integrate innovative and useful features while ensuring high performance and security standards. For your project, I can bring my expertise in Swift and Objective-C to the table to seamlessly integrate the new functionalities into your existing app. Collaboration is key for successful integrations, which is why I'm skilled at working within established systems while pushing technological boundaries to enhance performance. I put a high value on communication and reliability, ensuring that your project will get my undivided attention and best work throughout. Choosing me means optimizing for a developer with both technical depth and genuine care for every project. As a comprehensive problem-solver who has built apps that perform, convert, and scale, I won't just add new features for the sake of it – I'll add functionality that truly solves problems for your users while adhering to the highest standards of security and performance. Let's build something great together!
₹75,000 INR in 2 days
2.0
2.0

We are experienced iOS developers with a strong background in Swift and Objective-C, and we would be excited to help integrate new functionalities into your existing application while maintaining stability, performance, and security. Our team has worked on feature-rich iOS applications involving API integrations, real-time functionality, UI/UX improvements, payment systems, notifications, analytics, and scalable mobile architectures. We focus on seamless integration with existing codebases, clean and maintainable development practices, and thorough testing to ensure smooth user experience across all supported iOS devices. In addition to implementing innovative new features, we prioritize app optimization, secure data handling, and compatibility with Apple’s latest standards and guidelines. We are comfortable collaborating closely throughout the project, providing regular progress updates, technical recommendations, and transparent communication to ensure the final implementation aligns with your expectations. We would be happy to share relevant portfolio examples and discuss the best approach for enhancing your app efficiently and professionally.
₹150,000 INR in 7 days
2.1
2.1

I can help enhance your existing iOS app with cleanly integrated new features while maintaining stability, performance, and security across the current architecture. I have strong experience with Swift, Objective C, API integrations, app optimization, and feature expansion in production iOS applications. My approach focuses on seamless integration so new functionality feels native to the existing user experience without affecting app speed or reliability. I can assist with: 1. Feature development and integration 2. UI/UX improvements 3. API and backend connectivity 4. Performance optimization 5. Bug fixing and stability improvements 6. App Store deployment support I’ve worked on maintaining and scaling existing mobile apps where careful integration and backward compatibility were critical, so I understand the importance of clean architecture and safe deployment workflows. Happy to review the current codebase and discuss the exact features you want to add.
₹75,500 INR in 7 days
1.6
1.6

As an experienced Full-Stack Web & Mobile Developer with a deep understanding of iOS development, I can bring a unique perspective to your project. Not only do I have a strong background in Swift and Objective-C, but my skills extend to other platforms such as Flutter and React Native. This gives me the ability to conceptualize innovative approaches and find solutions that others might not. My portfolio showcases my expertise in integrating new features into existing systems while ensuring high performance and security standards. I am also adept at translating complex technical functionalities into seamless user experiences, a crucial skill for maintaining user satisfaction and engagement. Moreover, my familiarity with database design & optimization will be valuable in managing the data generated by these new functionalities efficiently. Being proficient in dev-ops and deployment, I ensure smooth transitions from development to production. In essence, you won't just get a developer for the task at hand by working with me; you'll get a collaborative partner committed to helping your business grow through innovative digital products.
₹75,000 INR in 1 day
4.0
4.0

Hi, I can fix your iOS App New Functionalities I've solved this exact problem many times. Here is what I will do: • Review your existing iOS app codebase and plan the safest integration path for Swift/Objective-C. • Add the new features with clean, seamless integration while keeping performance and security intact. • Test thoroughly in Xcode to ensure stability, smooth UX, and proper compatibility with the current system. 10 days free support after delivery Milestone-based payment Reply "YES" and Best regards, syed ribal
₹150,000 INR in 5 days
0.0
0.0

Understanding your goal to enhance user experience while preserving your app’s high performance and security, I bring a track record of delivering seamless iOS feature integrations that elevate engagement and functionality. Your call for “innovative and useful features” with “seamless integration” resonates with my approach—prioritizing smooth, clean implementation that harmonizes with your existing system without compromise. I specialize in architecting scalable and secure iOS solutions using Swift and Objective-C, ensuring each enhancement drives measurable improvements in app stability and user satisfaction. I am the right choice for your project due to my reliable, fast communication and commitment to efficient turnaround, guaranteeing your vision is executed with precision on schedule. I am available for a quick chat! Best Regards, Oreliom
₹75,000 INR in 30 days
0.0
0.0

Hello Sir, I’m Abdul from Pabyte. I understand you don’t just need someone to add features, you need an iOS developer who can improve your existing app without breaking what already works. A live app carries user trust, so every new functionality must feel natural, stable, secure, and polished from the first release. I have experience with iOS development, Swift, Objective-C, feature integration, API connectivity, performance optimization, debugging, and maintaining clean app architecture. I can carefully review your current codebase, understand the existing flow, and integrate new features in a way that feels like they were always part of the app. My approach would be to first audit the current app structure, identify the safest integration points, then add the required features with clean code, proper testing, and attention to performance/security. I’ll also make sure the final build is smooth, stable, and ready for App Store submission if needed. A few questions: Q1 – What new features do you want added first? Q2 – Is the app built mainly in Swift, Objective-C, or both? Q3 – Do you already have designs/API documentation ready? I look forward to bringing your vision to life! Best regards, Abdul from Pabyte Please come to my chat. I am ready to start right now.
₹75,000 INR in 5 days
0.0
0.0

GSINFOTECHH OPC Pvt. Ltd. – Your Trusted Tech Partner Based in New Delhi, GSINFOTECHH OPC Pvt. Ltd. is a professional IT solutions & software development company delivering secure, scalable, and high-performance digital solutions for startups and enterprises. We help businesses convert ideas into powerful, market-ready products. Our Services • Mobile App Development (Android & iOS) • Desktop Software Development (C#, Java, .NET) • Custom Software & Web Application Development • Website Design & Development (WordPress, Joomla, Drupal) • Laravel, React JS & Node JS Development • Game Design & Development • Blockchain Solutions • AI, Automation & Custom Tools • Meta Trading Tools, Bot Scripting & Web Scraping • SEO, Digital Marketing & Branding • Video Editing & Multimedia Production Technologies We Use • React JS, Node JS, MongoDB • Python (Django) • Android Studio (Java/Kotlin), iOS (Swift) • Flutter & React Native Why Choose Us? ✔ Modern, cost-effective & scalable solutions ✔ Experienced & creative development team ✔ Transparent workflow & 100% client satisfaction ✔ Secure, optimized & future-ready technology ✔ On-time delivery & dedicated support ✔ Flexible pricing – negotiation available Let’s build something amazing together! Hire GSINFOTECHH OPC Pvt. Ltd. to take your project to the next level.
₹75,000 INR in 10 days
0.0
0.0

Looking for reliable, efficient, and scalable software solutions? I provide professional software development services that help your ideas come to life. Whether it’s a web application, mobile app, desktop software, or automation tools, I bring your vision to reality with clean, maintainable code. Services I offer: Custom Web Applications (React, Angular, Node.js, Django, etc.) Mobile Applications (iOS, Android, Flutter, React Native) Desktop Applications (Windows, MacOS, Linux) Automation & Scripts (Python, JavaScript, Shell) API Development & Integration Bug Fixes & Performance Optimization Why choose me: Experienced in multiple programming languages and frameworks Clean, efficient, and maintainable code Focus on performance, security, and usability Timely delivery and clear communication Let’s build something amazing together! Contact me today to discuss your project. Pricing Packages (example): Basic: Small script or utility, 1–3 days, $50 Standard: Web or mobile module, 4–7 days, $150 Premium: Full software solution, 1–3 weeks, $500+ Extras: Extra Fast Delivery Extended Support & Maintenance Detailed Documentation If you want, I can also create a punchy Fiverr/Upwork-ready gig that is optimized for sales, including keywords and a client-friendly style that stands out. Do you want me to do that next?
₹112,500 INR in 7 days
0.0
0.0

As an iOS developer with a strong background in Swift and Objective-C, I believe I am the perfect fit for your project. At AMMRS Software Solutions and ESG Consulting LLP, we've focused on providing innovative and useful solutions that integrate seamlessly with existing systems, while maintaining high performance and security standards. Our portfolio showcases our ability to add new features while ensuring the app's efficacy is not compromised. Although my expertise lies in Flutter, I have extensive knowledge and experience working with iOS development. This has equipped me well to understand the intricate details of the platform and create solutions that meet its unique requirements. In addition, our approach to software development is driven by a strong methodology which allows us to ensure the functionality we introduce not only meets but exceeds your expectations. In conclusion, choosing me would not only guarantee you a seasoned professional with a proven track record of successful iOS
₹112,593 INR in 25 days
0.0
0.0

Hi, I’m an experienced iOS developer with a strong background in building and enhancing production-ready applications using Swift and Objective-C. I can help integrate new functionalities into your existing app while ensuring smooth compatibility, high performance, and secure implementation. I have worked on feature integrations such as: • Real-time APIs and third-party SDKs • Payment gateways and subscription systems • Push notifications and background services • Location tracking and map-based features • Performance optimization and bug fixing • UI/UX improvements for better user engagement I focus on writing clean, maintainable code and ensuring seamless integration without affecting existing functionality. I’m also experienced in App Store deployment, testing, and debugging complex iOS applications. Recently, I worked on mobile apps involving scalable architecture, API integrations, and feature upgrades with a strong emphasis on performance and user experience. I’d be happy to review your current app structure and discuss the best approach for implementing the new features efficiently. Looking forward to working with you.
₹112,500 INR in 7 days
0.0
0.0

Hi, I checked your iOS app enhancement requirement carefully. The main point here is adding new functionality without affecting the current architecture, performance, or user experience. I work on production-level mobile systems using Swift, Objective-C, React Native, and Flutter, with strong experience integrating complex features into existing apps rather than rebuilding from scratch. Most of my recent work involves scalable mobile architecture, API integration, performance optimization, and maintaining clean, maintainable code in live applications. What makes me a good fit is that I focus heavily on safe feature integration and long-term stability. I usually start by reviewing the existing structure, identifying dependency risks, then implementing features in isolated modules to avoid regressions and keep future updates manageable. Which part of the app needs enhancement first, and is the current codebase fully native or hybrid? Looking forward to hearing more.
₹75,000 INR in 7 days
0.0
0.0

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