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We are seeking experienced iOS and Android developers to assist in completing and optimizing our iOS VPN application. The developer will need to synchronize all features and logic from the reference template (Android version) to the iOS version, address existing issues in the iOS app, and update and optimize backend code to ensure compatibility and performance with the iOS client. Pre-Development Requirements (Must Complete): To ensure development quality and feature consistency, all developers must complete the following steps before starting coding: Download and thoroughly experience the reference template: This is a crucial step to understand project requirements. Please download the reference template from Google Play and fully experience all features, including connection flow, settings options, UI interactions, etc. Download link: [login to view URL] Screenshot for reference: During the experience, it's recommended to take a screenshot of the main page as a development reference for UI design comparison. Project Requirements 1. Feature Synchronization Sync all functionalities and logic from the reference template (Android VPN version) to the iOS version. Ensure that the user experience on iOS aligns with that of the reference template. During development, please continuously refer to the downloaded reference template application to ensure each feature implementation is consistent with the reference template. It is recommended that when developing each feature module, first compare it with the corresponding feature in the reference template before coding. Feature Comparison Verification: When developing each feature, please compare it with the corresponding feature in the reference template to ensure UI elements, interaction logic, animation effects, etc. are consistent with the reference template. Continuous Reference: The reference template application should serve as the primary reference throughout the development process. Please keep the application on your device for easy access. 2. Issue Resolution Address and fix bugs in the current iOS VPN application, such as connection instability, UI misalignment, and unresponsive functionalities. Improve the app's stability and overall user experience. 3. Backend Code Optimization Update and optimize backend code to meet iOS client requirements. Ensure compatibility with the iOS application and enhance overall performance and connection speed. 4. VPN Protocol Integration Integrate the VPN protocol into the iOS application. Ensure secure and stable VPN connections and optimize performance. 5. Membership Feature Integration Implement and synchronize membership management features, including user registration, login, subscription management, and access control on the iOS client, to match the reference template. Specific Responsibilities Feature Synchronization and UI Consistency: Sync all functionalities and UI elements from the reference template to the iOS version, ensuring a consistent user experience. Continuously refer to the downloaded reference template application during development to ensure the iOS version's design remains consistent with the reference template. Issue Resolution and Debugging: Diagnose and resolve bugs in the iOS app, including network connectivity issues, UI design problems, and functionality errors. Backend Code Update and Optimization: Optimize backend code for iOS compatibility, improving server response speed, security, and overall VPN service performance. VPN Protocol Integration and Optimization: Implement the VPN protocol integration on iOS, ensuring smooth and reliable VPN connections. Membership Functionality Development and Integration: Develop and integrate membership management features in the iOS application, ensuring seamless operation and consistency with the reference template. Security and Compatibility Optimization: Ensure the application complies with iOS security and privacy standards and passes the App Store review process. Optimize both client and server-side security and stability. Qualifications Extensive iOS or Android Development Experience: Proficiency in Swift, Objective-C (iOS) or Kotlin, Java (Android), with significant experience in mobile app development, including VPN-related projects. VPN Protocol Integration Experience: Familiarity with VPN protocol and experience integrating VPN protocols on iOS or Android platforms. Backend Code Optimization Skills: Ability to update and optimize backend code for mobile applications, ensuring efficient data transmission and VPN connection stability. Problem-Solving Ability: Expertise in identifying and fixing issues in iOS or Android applications, particularly related to network connectivity, UI optimization, and functionality tuning. Preferred Qualifications VPN Application Development Experience: Experience developing and releasing VPN applications on iOS or Android. Backend Development and Optimization Experience: Experience optimizing backend code to enhance server performance and security. Cross-Platform Synchronization Experience: Experience in syncing features between different platforms (iOS and Android) to ensure consistency in functionality and logic. Work Mode Remote Work with Supervision: The developer will work on their own device, but we will use remote tools to monitor and review progress in real-time, ensuring the project stays on track and issues are addressed promptly. Continuous Reference Template Comparison: During development, developers need to continuously refer to the downloaded reference template application to ensure each feature implementation is consistent with the reference template. We will verify against the reference template during code reviews. Timely Communication and Reporting: Regular updates and effective communication are crucial. We expect consistent progress reports and the ability to adjust development focus based on project requirements. Reports should include comparison with the reference template.
Projekt-ID: 40227503
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17 Freelancer bieten im Durchschnitt $1.066 USD für diesen Auftrag

As an experienced software developer with over a decade of experience under my belt, I am well positioned to take on your iOS and Android VPN app development project. Armed with a range of expertise including Backend Development, Java as well as solid experience in Mobile App Development (including 8 years of iOS App development)I am more than familiar with the requirements that your project demands. My team and I will ensure that all features, logic and UI are seamlessly synchronized on the iOS version from your Android reference template. In addition to satisfying the project's pre and post-development requirements, my team at Carol Data Technology boasts of quality assurance measures such as daily progress reporting which will ensure you are always in the loop. We pride ourselves in delivering error-free services within tight deadlines, while still maintaining utmost meticulousness and creativity. By choosing my team and I for the project, you are assuring yourself of clear communication, continued support even after final product delivery, complete satisfaction at every stage - all whilst benefiting from the deep pool of skills and resources at our disposal. Thank you for considering us for this project; we look forward to creating a bespoke VPN application that is secure, highly performant and a joy to use!
$475 USD in 7 Tagen
5,9
5,9

Hello, I’ve gone through your project details and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, particularly with iOS and Android applications, including VPN integration. My approach emphasizes clean architecture, scalable code, and thorough testing to ensure compatibility and performance throughout the development cycle. I’ll begin by closely analyzing the reference template's features to synchronize them effectively with the iOS version. I understand how crucial it is to resolve existing issues in the current app, enhance backend optimization, and successfully integrate VPN protocols while ensuring a smooth user experience. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: 1. What specific criteria for the VPN connection stability do you have in mind? What specific criteria for the VPN connection stability do you have in mind? Let’s discuss over chat! Regards, Arpit
$530 USD in 1 Tag
5,9
5,9

Hello Dear! I write to introduce myself. I'm Engineer Toriqul Islam. I was born and grew up in Bangladesh. I speak and write in English like native people. I am a B.S.C. Engineer of Computer Science & Engineering. I completed my graduation from Rajshahi University of Engineering & Technology ( RUET). I love to work on Web Design & Development project. Web Design & development: I am a full-stack web developer with more than 10 years of experience. My design Approach is Always Modern and simple, which attracts people towards it. I have built websites for a wide variety of industries. I have worked with a lot of companies and built astonishing websites. All Clients have good reviews about me. Client Satisfaction is my first Priority. Technologies We Use: Custom Websites Development Using ======>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB What you'll get? • Fully Responsive Website on All Devices • Reusable Components • Quick response • Clean, tested and documented code • Completely met deadlines and requirements • Clear communication You are cordially welcome to discuss your project. Thank You! Best Regards, Toriqul Islam
$200 USD in 5 Tagen
5,1
5,1

Hi There!!! ★★★★ (iOS & Android VPN Application Development & Optimization) ★★★★ I understand you need to synchronize all features from the Android VPN template to the iOS app, fix existing iOS issues, optimize backend code, and ensure a smooth, secure VPN experience. The goal is full feature parity with stable performance and membership integration. Services 24*7 available for discussion(reply in a few hours) Ui & UX design with unlimited revisions Deployment Support Source code will be provided at the end of the project 90-days support for bug fixing With 9+ years of experience in iOS & Android development, I’ve worked on VPN apps, backend optimization, and cross-platform feature syncing. I’ll first explore the reference Android template thoroughly, then implement, test, and debug each module on iOS using Swift and optimized backend logic, ensuring security and App Store compliance. Looking forward to discussing this project and bringing your VPN app to peak performance. Warm Regards, Farhin B.
$257 USD in 7 Tagen
5,1
5,1

Hi This is a serious VPN synchronization and stabilization project, and I can help bring the iOS client to feature parity with your Android reference while improving backend compatibility and connection reliability. I have experience working with Network Extension frameworks, VPN tunnel providers, and backend optimization for mobile clients where stability and App Store compliance are critical. My approach would begin with a structured feature audit of the Android reference template and your current iOS build to create a detailed parity matrix. From there, I would align connection flow, UI logic, membership handling, and protocol integration to ensure behavior consistency rather than superficial visual matching. VPN integration on iOS will use the appropriate Network Extension APIs with secure configuration handling and optimized reconnect logic. Backend updates will focus on improving session management, subscription validation, API response time, and secure token handling to meet iOS client expectations. I also prioritize App Store compliance including privacy disclosures, encryption handling, and background execution limits. The goal is a stable, synchronized iOS VPN client that matches Android functionality while meeting Apple’s technical and review requirements. Best, Justin
$475 USD in 7 Tagen
4,2
4,2

Hi There!!! ★★★★ (iOS & Android VPN Application Development & Optimization) ★★★★ I understand you need to synchronize all features from the Android VPN template to the iOS app, fix existing iOS issues, optimize backend code, and ensure a smooth, secure VPN experience. The goal is full feature parity with stable performance and membership integration. Services 24*7 available for discussion(reply in a few hours) Ui & UX design with unlimited revisions Deployment Support Source code will be provided at the end of the project 90-days support for bug fixing With 9+ years of experience in iOS & Android development, I’ve worked on VPN apps, backend optimization, and cross-platform feature syncing. I’ll first explore the reference Android template thoroughly, then implement, test, and debug each module on iOS using Swift and optimized backend logic, ensuring security and App Store compliance. Looking forward to discussing this project and bringing your VPN app to peak performance. Warm Regards, Farhin B.
$254 USD in 7 Tagen
3,7
3,7

With 7+ years of experience in software development and a vast array of expertise in iOS and Android, I believe I am the perfect fit for your VPN application project. From debugging and issue resolution to backend code optimization and security enhancement, my skills extend far and wide covering all key aspects you require for completion. I understand the need for an effective VPN application that works seamlessly across both iOS and Android platforms. By synchronizing all features and logic from the reference template (Android version) to the iOS version diligently, I guarantee to maintain consistency in user experience while improving compatibility and overall performance. Moreover, handling complex projects is a forte I take pride in; thus, integrating the secure VPN protocol into your iOS application with optimized connection speed is achievable through my capabilities. Additionally, I appreciate the vitality of membership management features, including user registration, login, subscription management, and access control in your project ensuring to develop and integrate them efficiently into your app. Let's collaborate to make a safe digital future!
$50 USD in 7 Tagen
3,1
3,1

Hello, INCONSISTENT VPN PERFORMANCE WEAKENS USER TRUST Your iOS & Android VPN application needs secure, fast, and reliable connection handling to meet user expectations. Without proper development and optimization, users may experience slow speeds, unstable tunnels, crashes, or security gaps — reducing retention and reviews. iOS & ANDROID VPN APPLICATION DEVELOPMENT & OPTIMIZATION I will design, develop, and optimize your VPN app for both iOS and Android with secure tunneling protocols (WireGuard, OpenVPN, or IKEv2 as needed), efficient connection management, intuitive UI/UX, background handling, battery-efficient operation, kill-switch support, and smooth performance on modern mobile devices. SECURE, FAST, AND STABLE MOBILE VPN EXPERIENCE You will receive a fully functional, polished VPN application that delivers secure connections, optimized performance, and a seamless user experience that increases downloads, trust, and retention. I have 16+ years experience in software development and mobile networking solutions. Thanks
$700 USD in 10 Tagen
2,8
2,8

I will fully sync your iOS VPN app with the Android reference template by conducting a systematic side-by-side feature comparison before writing a single line of code. All connectivity issues and UI inconsistencies will be resolved through targeted debugging and protocol-level optimization for the iOS platform. I will refactor the backend integration to ensure seamless compatibility with iOS while boosting connection stability and server response speeds. Every membership and subscription flow will be rebuilt to mirror the Android version exactly, maintaining visual and functional parity across both platforms. Throughout development, I will maintain continuous reference to the live Google Play app and provide transparent remote progress reviews to guarantee complete feature alignment.
$250 USD in 1 Tag
0,0
0,0

Hello I’m an experienced iOS and Android developer with strong expertise in VPN application architecture, protocol integration, and cross-platform feature synchronization. I can carefully analyze the Android reference template, replicate its full feature logic and user experience on iOS, and ensure precise UI consistency, animation behavior, and interaction flow across both platforms. I will thoroughly test and compare each module against the reference app before and during development to guarantee alignment in connection flow, settings structure, membership handling, and overall usability. Beyond synchronization, I will diagnose and resolve existing iOS issues—such as connection instability, UI inconsistencies, and unresponsive features—while improving overall stability and performance. On the backend side, I can optimize APIs, improve session handling, enhance server response efficiency, and ensure seamless compatibility with the iOS client. I also have experience integrating VPN protocols on iOS using Network Extension frameworks, ensuring secure, stable, and App Store–compliant implementations. With a structured workflow, continuous template comparison, and clear progress reporting, I can deliver a secure, high-performance iOS VPN application fully aligned with your Android reference. Best regards !
$475 USD in 4 Tagen
0,0
0,0

Hello, I’m an experienced iOS and Android developer with expertise in Swift, Kotlin, and VPN protocol integration. I will sync all features from the Android reference template to the iOS app, ensuring UI, interaction, and functionality consistency. I will fix existing iOS bugs, optimize backend code for speed and stability, and integrate secure VPN connections with membership management. I’ll continuously compare with the reference template and provide regular progress updates. Estimated timeline: 2 weeks, Budget: $600. Could you clarify if backend access and APIs are fully ready for optimization? Looking forward to hearing from you. Thank you.
$600 USD in 14 Tagen
0,0
0,0

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