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READ BEFORE YOU BID - Your bid is the fee, if you start negotiating after bidding, then DO NOT BID! My current CodeIgniter site needs two parallel upgrades—backend feature expansion and a brand-new Flutter companion app for both Android and iOS. 1. CodeIgniter work • Build and wire robust API endpoints so the site can serve data cleanly to the mobile clients and any future integrations. • While touching the codebase, refine user flow screens and make every public-facing page fully responsive across breakpoints. 2. Flutter app • Develop a single codebase in Flutter that consumes the new APIs, mirrors all key web functionality, and passes App Store / Play Store review standards. • The app must feel native, load quickly, and remain visually consistent with the improved site UI. Hand-off requirements • Source code for both the updated CodeIgniter modules and the Flutter app. • Clear setup/readme files and environment variables documented. • A short video or annotated screenshots demonstrating the finished flows working end-to-end (web → API → mobile). Once everything compiles and the data syncs flawlessly between web and mobile, the project is complete.
Project ID: 40557356
182 proposals
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Active 3 days ago
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182 freelancers are bidding on average $180 USD for this job

Hey, I will build the CodeIgniter API endpoints with input validation and consistent error responses, then develop the Flutter app as a single codebase for both iOS and Android that consumes those APIs and stays visually consistent with your updated site UI. I will send you a short update at the end of each day so nothing gets missed. Questions: 1) How many key screens or user flows does the current site have that the Flutter app needs to mirror? 2) Do you already have App Store and Play Store developer accounts set up? Send me a message and we can go over the details. Best regards, Kamran
$90 USD in 5 days
8.7
8.7

Hi, that CodeIgniter-to-Flutter jump makes sense as long as the API layer is built cleanly first, otherwise the app ends up patching around a messy backend later. I'd expose proper REST endpoints from CodeIgniter with token auth, keep the mobile client and web UI pulling from the same source, and build the Flutter app to consume that directly so nothing drifts out of sync. Responsive fixes on the web side can happen in parallel. We've built similar JS/mobile stacks for clients over the years, source and setup docs included as standard. Happy to show examples of past API + mobile handoffs if useful. One thing worth flagging: for a full Flutter app covering both stores plus backend API work, 30-250 USD is tight. Can scope a phased version if that helps fit the budget.
$140 USD in 7 days
8.8
8.8

Hi! ^^^^^^^^^I can enhance your existing CodeIgniter application by building secure, scalable APIs, improving the responsive UI, and developing a high-performance Flutter app for both Android and iOS that stays fully synchronized with the backend. I'll deliver clean, well-documented source code, setup guides, and complete end-to-end testing to ensure a smooth deployment. Question: Could you share which version of CodeIgniter you're using (CI3 or CI4), and do you already have API documentation or will the API architecture need to be designed from scratch?
$251 USD in 2 days
8.2
8.2

Hello, I can help with your "CodeIgniter + Flutter Enhancement" project. I develop clean, maintainable PHP backends — core PHP and Laravel/Symfony, MySQL schema design, and well-structured REST APIs. For work involving php, mobile app development, codeigniter, mysql, html, backend development, flutter, api development, I pay close attention to validation, security, and readable code, delivering in small, testable milestones. I provide clean commits and clear documentation. Can we discuss the specifics before I firm up the timeline? ⭐ 5.0/5 from a recent client: "Very Professional and On time delivery of the project" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
$200 USD in 4 days
7.9
7.9

CodeIgniter Website Enhancement & Flutter Mobile App Development Hello, I understand that you want to enhance your existing CodeIgniter website by expanding its backend capabilities with secure REST APIs while improving the UI/UX and responsiveness. Key Features: ➜ REST API Development & Integration ➜ CodeIgniter Backend Enhancement ➜ Responsive UI/UX Improvements ➜ Flutter App for Android & iOS (Single Codebase) ➜ Real-Time API & Data Synchronization ➜ Native-Like Performance & Modern UI ➜ Secure Authentication & API Integration Let's chat and discuss your project in more detail. Thanks
$140 USD in 7 days
8.3
8.3

Hi there, We’ve developed several web apps with responsive front-ends and robust back-end APIs, including a fully responsive web app that serves as a companion for an iOS app. We also have extensive experience with Flutter, having built multiple apps that are now live on the App Store and Play Store. For your project, we can create a fully responsive web app that serves as a companion for the mobile app, ensuring that both platforms are in sync. We can also enhance the web app with new features and improve existing user flows based on our experience with similar products. Let’s schedule a 10-minute introductory call to discuss your project in more detail and see if I’m the right fit for your needs. I’m eager to learn more about your exciting project. Best, Adil
$207.53 USD in 7 days
7.7
7.7

Hi, I see you need to expand your CodeIgniter backend with robust API endpoints and responsive UI, while delivering a single‑code‑base Flutter app that mirrors the site’s key features for Android and iOS. The tricky part will be exposing clean, versioned APIs without breaking the existing CI logic and keeping the UI pixel‑perfect across web breakpoints and mobile screens, while also ensuring fast start‑up and native feel in Flutter. My approach: first audit the current CI controllers/models to map data flows, then add RESTful API routes (using CI’s built‑in REST library or a lightweight Lumen layer) with unit tests and proper JWT authentication. I’ll refactor the front‑end templates with Tailwind/Bootstrap to be fully responsive. For the Flutter side, I’ll set up a clean MVVM architecture, generate typed models from an OpenAPI spec, and use Provider/riverpod for state management so the app feels native and quick. Both platforms will share the same token strategy for seamless sync. I’ll provide full source, detailed README with env variables, and a short video/demo as requested. Are you already using a JWT/OAuth scheme for the current site, or would you like me to implement authentication from scratch? Thanks, please get in touch – looking forward to bringing both platforms together.
$120 USD in 10 days
7.6
7.6

Hi, We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on PHP, Mobile App Development, Codeigniter, MySQL, HTML, Backend Development, Flutter, API Development Please come over chat and discuss your requirement in a detailed way. Regards
$200 USD in 7 days
7.4
7.4

Hi! I can help you with both the CodeIgniter backend expansion and the Flutter companion app. For the backend, I'll build clean RESTful API endpoints that serve the mobile clients efficiently while also making the public pages responsive. For the Flutter app, I'll use a single codebase to mirror the web functionality and ensure it meets App Store and Play Store standards. I'm Edward, been doing PHP and Flutter development for over 10 years. I've done similar API-driven mobile apps before. Let me know if you want to discuss the specifics.
$30 USD in 7 days
7.6
7.6

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
$140 USD in 7 days
7.1
7.1

Hi, I’d be glad to help upgrade your CodeIgniter site and develop a Flutter app that seamlessly integrates with your backend. I have extensive experience building secure and efficient API endpoints, ensuring data flows smoothly to mobile apps. I understand the importance of making user flows responsive and visually consistent across both web and mobile platforms. For the Flutter app, I will create a single codebase that mirrors your web functionality, loads quickly, and meets App Store and Play Store guidelines. I also prioritize clear documentation, including setup instructions and environment variables, to ensure easy handoff. To confirm I can deliver exactly what you need, I’d like to understand your current API structure, the specific features you want in the Flutter app, and any existing design assets or UI guidelines you have. Best, Justin
$500 USD in 5 days
6.8
6.8

Hi I can enhance your CodeIgniter and Flutter application by improving functionality, optimizing performance, fixing issues, and refining the user experience, delivering clean, maintainable code and a seamless experience across both web and mobile platforms. Tejal
$120 USD in 4 days
6.9
6.9

Hi There I can upgrade your CodeIgniter site with robust API endpoints, refined user flows, and fully responsive pages, while simultaneously developing a Flutter app for Android and iOS that mirrors all key web functionality. The app will feel native, load quickly, and stay visually consistent with the improved site UI. Deliverables will include updated CodeIgniter modules, the Flutter app source code, clear setup documentation, and a short demo showcasing end-to-end flows. I’ll ensure flawless data sync between web and mobile, meeting your acceptance criteria without negotiation after bidding. Best regards,
$400 USD in 7 days
7.4
7.4

I specialize in enhancing web platforms and developing companion mobile applications to help clients like you achieve their digital goals. With a focus on backend feature expansion for your CodeIgniter site and creating a Flutter companion app, I am well-equipped to handle the parallel upgrades you require. I understand the importance of building robust API endpoints for seamless data delivery to mobile clients, refining user flow screens, and ensuring full responsiveness across different devices. The Flutter app development will involve creating a native-like experience that mirrors key web functionalities and meets the standards of app stores. My expertise lies in CodeIgniter development and Flutter app creation, ensuring a smooth hand-off with clear documentation and a seamless transition between the web and mobile platforms. You can count on me to deliver a solution that not only meets your immediate needs but continues to add value long after the launch.
$150 USD in 7 days
6.8
6.8

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, working with Flutter, Android, iOS, React, Node.js, and APIs. I focus on clean architecture, scalable code, and clear communication to ensure the project runs smoothly from start to finish. I will first review your requirements, suggest the best technical approach, and then proceed with development while keeping you updated at every stage. 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:What specific backend features are you looking to enhance in your CodeIgniter site? Let’s discuss over chat! Regards, Arpit Jaiswal
$155 USD in 25 days
7.5
7.5

Hi There!!! ★★★★ (Seamless CodeIgniter API integration with a high-performance Flutter app for Android & iOS.) ★★★★ I’ve read your requirements and understand you need parallel enhancements to your existing CodeIgniter website along with a Flutter app that consumes secure APIs, mirrors web functionality, and delivers a fast, native-like experience. I'll also ensure responsive UI improvements and complete project documentation. ⚜ CodeIgniter backend enhancement ⚜ Secure REST API development ⚜ Fully responsive web UI improvements ⚜ Flutter app for Android & iOS ⚜ MySQL & API integration ⚜ Setup documentation & source code ⚜ Demo video/screenshots with end-to-end testing I’ve worked on CodeIgniter and Flutter projects with API-driven architectures, focusing on clean code, smooth synchronization, and scalable solutions. I'll follow a structured workflow, test every endpoint carefully, and deliver a polished app that is ready for Play Store and App Store submission. I'd love to discuss the existing system and get started soon. Warm Regards, Farhin B.
$110 USD in 10 days
6.8
6.8

Hi, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on PHP, Mobile App Development, Codeigniter, MySQL, HTML, Backend Development, Flutter, API Development Please come over chat and discuss your requirement in a detailed way. Thank You
$70 USD in 3 days
6.3
6.3

As a seasoned Full-stack Developer with over 8 years of experience and a solid grasp of both web and mobile app development, I am strongly confident in my ability to take your CodeIgniter site to the next level. My proficiency in designing robust API endpoints will enable clean data transfer between your website and the upcoming Flutter companion app, ensuring a seamless user experience. Additionally, my familiarity with HTML, PHP and Mobile App Development - including Flutter for Android and iOS - will enable me to create a streamlined and visually consistent single codebase for the app that stays true to the improved UI on your site. Last but not least, when you hire me, you're not just getting someone who can complete this project; you're also gaining a long-term partner who can provide dedicated support for your future endeavours. I believe in forging productive working relationships with my clients and delivering on-time with clear communication throughout the process. My aim is to turn your vision into reality as rapidly as possible without compromising on quality. Join hands with me, Vimal and let's transform your CodeIgniter site while creating a fluttering new dimension together!
$140 USD in 7 days
6.5
6.5

Hi I will be able to help you. Please message me so that we will have detail technical discussion. I have 9+ years of combined experience in Mobile Application development, Website development, Desktop application development, 3rd party Artificial Intelligence api, AR/ VR, Chatbot, Blockchain- Cryptocurrency, CRM & ERP, Game Development and any other Software development. I am having expertise in Native on Android Java, kotlin and IOS Swift, and For Hybrid Cross platform on Flutter Dart & React- Native and for web and backend on react js and node js, Python Django and php CodeIgniter mvc and Laravel. Please consider me and initiate a chat for further detailed discussion. Regards, Anju
$450 USD in 14 days
6.6
6.6

Hello, I came across your CodeIgniter + Flutter Enhancement and I am very interested in working with you. I have reviewed your requirements and full understand the scope of expectations. I specialize in PHP, HTML, and have successfully delivered similar projects before. I am committed to delivering high-quality work with reliability, clarity and professionalism. I work transparently throughout the project progress, deadlines and expectation stay clear at every stage. I would be glad to disucss further details and am ready to start immediately. Looking forward to hearing from you. Regards. Anum
$250 USD in 2 days
6.0
6.0

Bangkok, Thailand
Member since Jul 3, 2026
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