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iOS App Development Brief: Revaliday 1. Project Objective We are looking for an iOS developer (Swift/SwiftUI) to build the native mobile client for Revaliday, a real-time multiplayer medical quiz game. Current Project State: The platform is completely functional. We already have a fully operational HTML/web client, and the backend ecosystem—powered by a custom Java WebSocket signaling server—is 100% finished. The AI matchmaking, round management, and game logic are handled entirely server-side. Your Role: Your task is solely to build the native iOS interface and connect it to our existing WebSocket (WS) server. You will not need to write any game logic. The app acts as a lightweight client that sends user interactions and updates the UI based on incoming JSON payloads. 2. Core Requirements Platform: iOS Native (Swift/SwiftUI preferred). Networking: Persistent WebSocket connection to process real-time bidirectional data. UI/UX: A responsive, gamified interface including a login screen, a matchmaking lobby, a live quiz arena (timer, question text, multiple-choice buttons), and an in-game chat overlay. 3. WebSocket Service Examples The communication between the iOS app and the server is handled via strict JSON payloads. Below are examples of the core services you will be integrating with. A. Authentication When the user logs in, the app sends credentials. The server responds with authorization. Server Response (Incoming): JSON { "actionId": "REVALIDAY_AUTHORIZATION", "authorized": true, "token": "example_token_123" } B. Room Join & Matchmaking When a player enters the arena, the server confirms their entry and begins broadcasting the arrival of other players or AI bots. Server Response (Incoming): JSON { "actionId": "REVALIDAY_ROOM_JOIN", "playerData": { "nick": "Dra_Beatriz", "especialidade": "Pediatrics", "color": "text-purple-400", "isUser": false, "acertos": 0, "roundStatus": "idle" } } C. Match Start & Receiving Questions The server dictates when the match starts and pushes the generated medical question to the clients. Server Response (Incoming): JSON { "actionId": "REVALIDAY_MATCH_START", "question": { "id": "Q101", "especialidade": "Cardiology", "enunciado": "Adult patient arrives at the ER reporting severe precordial pain radiating to the left arm. What is the immediate conduct?", "alternativas": [ { "id": "A", "texto": "Perform ECG within 10 minutes..." }, { "id": "B", "texto": "Immediate emergency surgical intervention." }, { "id": "C", "texto": "Administer analgesic medication..." }, { "id": "D", "texto": "Wait for pain stabilization..." } ] } } D. Submitting an Answer When the iOS user selects an option, the app sends the choice to the server. App Request (Outgoing): JSON { "actionId": "REVALIDAY_SUBMIT_ANSWER", "nick": "Dr_Elite", "questionId": "Q101", "answerId": "A" } E. Chat Relay The live chat functions by broadcasting messages to all connected clients in the room. Server Response (Incoming): JSON { "actionId": "REVALIDAY_CHAT_MESSAGE", "chatData": { "user": "Dr_Ramos", "text": "I think the answer is C, dealing with the trauma protocol.", "colorClass": "text-emerald-400" } }
Project ID: 40597247
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130 freelancers are bidding on average $206 USD for this job

Hi there, Jas this side from Logictrix and I am ready to work on your app with my team and with a promise for long term support in fairly low cost. Please just give me your few minutes for the chat so that we can discuss all the important points about project as well as we can clarify any queries from both side to go ahead further for final agreement. We are expert in AI development and we used many AI platforms like openAI, Freepik, Antigravity, Cursor etc for App development and other AI work. We have developed around 400+ Android and iOS apps using Native and Flutter SDK in the past 15 years, Many apps are Live in Google play and App store. We will share our detailed portfolio over the Chat once we connect. Looking forward to your reply... Thanks and Regards Jas
$180 USD in 3 days
9.7
9.7

Hello, I have carefully reviewed your requirements and understand that the backend, WebSocket server, and game logic are already completed. My responsibility will be to develop the native iOS client in Swift/SwiftUI, integrate it with your existing WebSocket APIs, handle real-time JSON communication, and build a smooth, responsive UI for authentication, matchmaking, quiz gameplay, timer, and live chat. I have 10+ years of experience in iOS development with Swift/SwiftUI, WebSocket integration, real-time applications, and JSON-based client-server communication. I will deliver clean, maintainable, and scalable code while following an Agile development approach with regular progress updates. I WILL PROVIDE 2 YEARS OF FREE ONGOING SUPPORT, COMPLETE SOURCE CODE, WE WILL WORK WITH AGILE METHODOLOGY, AND WILL GIVE YOU ASSISTANCE FROM ZERO TO PUBLISHING ON THE APP STORE. I eagerly await your positive response. Thanks. Christina
$140 USD in 7 days
8.4
8.4

Hello, I'd love to help with your "Medical Quiz iOS App Websocket CLient" project. I build fast, pixel-perfect static sites and landing pages in clean HTML5/CSS3 with Bootstrap or Tailwind — fully responsive across mobile, tablet, and desktop. For a fixed project involving mobile app development, iphone, objective c, ipad, game development, swift, json, ios development, mobile development, swiftui, I convert Figma/PSD/XD designs into crisp, semantic markup that matches the design exactly. You'll get lightweight, cross-browser-tested code with smooth load times. Happy to discuss the details and timeline — when can we chat? Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
$100 USD in 4 days
7.7
7.7

Hi there, I will build the native SwiftUI client for Revaliday, connecting it to your existing Java WebSocket server: login screen, matchmaking lobby, live quiz arena with timer and multiple choice, and the chat overlay. All driven by the JSON payloads you already have documented. On a recent real time quiz app, structuring the WS layer as a single observable service made every view update instantly without extra glue code. I will set yours up the same way. Questions: 1) Do you have a staging WS endpoint I can test against from day one? 2) Should player colors like "text-purple-400" map to a specific design system or are they flexible? Send me a message and we can go over the details. Best regards, Kamran
$90 USD in 5 days
7.5
7.5

--- Native iOS App Development for Revaliday --- I can help build the native iOS client for Revaliday by connecting your existing WebSocket backend with a responsive SwiftUI interface. Here's my approach: → Develop the app in Swift/SwiftUI with persistent WebSocket communication. → Build the login, matchmaking, quiz, timer, chat, and results screens based on your existing JSON APIs. → Handle real-time events, state updates, and reconnect logic while keeping the UI responsive. → Deliver clean source code, documentation, testing, and App Store deployment support. Flow Login → Matchmaking → Join Room → Live Quiz → Chat → Results Question Do you already have the UI/UX designs from the web client, or should the iOS app follow Apple's native design guidelines while matching your existing branding? Let's connect... Thanks
$260 USD in 16 days
7.3
7.3

Understanding the goal of creating a native iOS client for a real-time multiplayer medical quiz, our team is ready to develop an engaging, responsive interface that enhances user interaction. We focus on delivering a seamless experience that connects effortlessly to your existing WebSocket server. We noted your need for a login screen, matchmaking lobby, and an interactive quiz arena. Our approach involves using SwiftUI to build a clean UI that integrates the required JSON payloads for authentication, matchmaking, and question handling efficiently. With experience in iOS development and WebSocket communications, we have 20+ 5-star reviews on similar projects! Communication, quality, and on-time delivery are always our priorities. If you'd like, I can also share similar work we've completed and discuss the best approach for your project. Regards, JP
$150 USD in 7 days
6.9
6.9

Hi, It will be an honor for me to work with you. I have got 12 years of iOS development experience (SwiftUI, Swift). Lets discuss this in detail and get this started. Looking forward to hear from you.
$250 USD in 7 days
6.9
6.9

Hello, I'm an experienced iOS developer with over 5 years of expertise in building high-quality, native iOS applications using Swift and SwiftUI. I specialize in creating clean, responsive user interfaces and developing robust features that align with Apple’s design philosophy and performance standards. Whether you're looking to build an app from scratch, improve an existing project, or need someone to implement specific functionalities, I bring strong attention to detail, timely delivery, and a deep understanding of the iOS ecosystem. I’ve worked on a range of apps including productivity tools, booking systems, utility apps, and more — always focused on creating smooth user experiences and scalable codebases. Let’s connect to discuss your project goals and how I can help you achieve them efficiently. Best regards, Moamen
$150 USD in 5 days
6.6
6.6

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. Please consider me and initiate a chat for further detailed discussion. Regards, Anju
$450 USD in 14 days
6.5
6.5

Hi There!!! ★★★★ ( I will build the native SwiftUI iOS client for your Revaliday quiz app with real-time WebSocket and understand the backend and game logic are already completed, so the focus is building a lightweight iOS client. I will create the SwiftUI screens, integrate communication and responsive game interface. ) ★★★★ I have reviewed your project and understand the backend and game logic are already completed, so the focus is building a lightweight iOS client. I will create the SwiftUI screens, integrate the persistent WebSocket connection, handle JSON events, and connect user actions with your existing server workflow. ⚜ Native iOS app development with Swift/SwiftUI ⚜ WebSocket client integration and event handling ⚜ JSON payload communication setup ⚜ Login, lobby and matchmaking screens ⚜ Real-time quiz arena with timer and answers ⚜ In-game chat overlay implementation ⚜ Testing, debugging and app optimization I have experience developing mobile applications, real-time integrations and API based solutions. I focus on clean architecture, smooth user experience and reliable communication handling. I can follow your existing server contracts and build the app without unnecessary changes to your backend. I would be happy to review your WebSocket documentation and start creating the iOS client. Warm Regards, Farhin B.
$110 USD in 6 days
6.7
6.7

Hi I understand you are looking for a hands-on iOS (iPhone/iPad) WebSocket client for your “Medical Quiz” app so real-time quiz updates/events can flow reliably over a persistent connection, using JSON payloads and integrating cleanly with a SwiftUI interface. I’m an AI and web developer who also builds mobile-facing systems with practical API/WebSocket integrations and automation-minded reliability. My approach is to keep the connection layer predictable, then wire it into the UI with clear state handling (connected, reconnecting, receiving, error) so quiz interactions feel stable rather than brittle. For this project, I would first align the expected WebSocket message format (JSON in/out) and define a small client contract: connect, subscribe/identify, send/receive event messages, and handle reconnection and parsing. Then I’d implement the client in Swift, add a SwiftUI-friendly observable state wrapper, and verify message handling paths with a lightweight simulator/test harness so you can see incoming events reflected in the quiz screens. Best, Justin
$140 USD in 7 days
6.1
6.1

Hi, To build the native iOS interface for Revaliday, I will utilize Swift/SwiftUI to create a responsive and gamified UI that connects to your existing WebSocket server. This will involve implementing a persistent WebSocket connection to handle real-time data and ensure smooth user interactions. I understand that the app will require features such as a login screen, matchmaking lobby, live quiz arena, and in-game chat overlay. I will ensure that the UI updates dynamically based on the JSON payloads received from the server. Happy to discuss the details.
$80 USD in 6 days
6.0
6.0

Hi, I've reviewed your requirements and understand that the backend and game logic are already complete. I can build a native SwiftUI iOS client that integrates with your existing WebSocket server, handling authentication, matchmaking, real-time quiz updates, answer submission, and live chat using your JSON protocol. I'll ensure a responsive, stable interface with clean WebSocket integration and reliable state management throughout the game flow. Looking forward to discussing your project. Best regards,
$250 USD in 7 days
5.8
5.8

Hello sir i have done lot of games in unity game engine and i have more then 7 years experience in unity game engine and i can do any type of games so please send me more details about your game project and i will give you daily updates well but i need daily communication if possible so i can do fast and good as you require.
$140 USD in 7 days
6.2
6.2

Hi, I reviewed your project: Medical Quiz iOS App Websocket CLient. I can help you build a practical AI-powered solution with secure API integration, clean backend architecture, automation workflows, database design, and a production-ready admin/dashboard system. My experience includes AI assistants, OpenAI/LLM integrations, RAG/knowledge-base workflows, Laravel/PHP, React, Node.js, APIs, databases, and deployment. Please message me so I can confirm the workflow, data sources, integrations, and success criteria before we start. Portfolio: https://www.freelancer.com/u/irfanui Regards, Mohammad 4th Dimension Partners
$90 USD in 3 days
6.0
6.0

As a seasoned iOS developer with over half a decade of experience, I've undertaken projects from a variety of domains and functionalities. My extensive background in network programming and interfacing will be an immense value-add to Revaliday's iOS client development needs. I have proficiencies in working with Websockets for real-time, bi-directional data transfer, which aligns perfectly with your key requirement of integrating the iOS interface to your existing WebSocket (WS) server. Moreover, my strong command over Swift/SwiftUI and knowledge of the JSON payload medium used for communication between the server and app make me an ideal fit for this role. I understand the importance of a responsive, intuitive, gamified user interface—essential for a competitive quiz game like Revaliday. I guarantee prompt delivery of quality work that aligns precisely with your specifications. Additionally, my knack for resolving issues efficiently allows me to rise above any challenges we may encounter during the project.
$140 USD in 7 days
6.2
6.2

Hello! As per your project post, you are looking to develop a native iOS application for Revaliday, a real time multiplayer medical quiz platform. Since your backend, WebSocket signaling server, matchmaking, and game logic are already fully implemented, the primary objective is to build a high performance SwiftUI client that maintains a persistent WebSocket connection, exchanges JSON messages with the existing server, and provides a responsive, engaging user experience. My approach would begin with reviewing your existing WebSocket protocol, JSON message structure, and HTML client behavior, followed by developing the native SwiftUI application with secure authentication, persistent WebSocket connectivity, matchmaking lobby, live quiz interface, countdown timer, multiple choice interactions, in game chat overlay, and seamless synchronization with your existing backend. I specialize in Swift, SwiftUI, iOS development, WebSockets, JSON based real time communication, REST APIs, asynchronous programming, mobile UI architecture, and scalable client applications. My focus will be on delivering a responsive, lightweight, and maintainable iOS client that integrates perfectly with your existing backend without modifying any server side game logic. Let's connect to discuss your requirements and build a smooth, native iOS client for your real time multiplayer medical quiz platform. Best regards, Nikita Gupta
$140 USD in 7 days
5.7
5.7

Hello There! I’m Md. Toriqul Islam, an experienced Full-Stack Developer with 10+ years of experience in mobile applications, real-time systems, API integration, and scalable software solutions. I’m excited to partner with you and can start working on your project immediately. I understand you need a native iOS app for Revaliday that connects to an existing WebSocket backend, handling authentication, matchmaking, live quiz updates, timers, answers, and chat interactions without rebuilding the server-side game logic. I have experience building real-time mobile applications and API-driven platforms. I’m skilled in Swift, SwiftUI, WebSockets, JSON APIs, mobile UI development, authentication flows, backend integration, and real-time data synchronization. I’m ready to review your current web client and WebSocket documentation to start development with the right approach. Looking forward to hearing from you. Best regards, Md. Toriqul Islam
$100 USD in 3 days
5.4
5.4

As a seasoned iOS developer with over 5 years of experience, I am well-versed in all aspects of iOS development—from architecture design to efficient UI. Your project, the Revaliday medical quiz game, truly piqued my interest. I noted your requirements for a native mobile client and native interface for a real-time multiplayer quiz game. And this is where I believe I can add exceptional value. My core expertise lies in Swift/SwiftUI as required by your project and have substantial experience working with WebSocket connections for real-time data transmission—I am confident that I can flawlessly integrate your existing WebSocket into a fully responsive native iOS User Interface (UI). Additionally, while my primary focus is on seamless performance and user-friendly design, given the extensive UI/UX elements in your project, I can also assure you that the visual experience of the game is hassle-free and enjoyable. Lastly, I pride myself on delivering high-quality work before the deadlines. With my depth and breadth of experience specifically in iOS development, including numerous successful application deployments in large-scale projects similar to Revaliday; I strongly believe, my skills are perfectly matched for building the native iOS client you’re seeking. Let's bring this game-changing project into reality together!
$50 USD in 1 day
5.5
5.5

Hi, I recently developed a real-time SwiftUI application that communicated with a WebSocket backend for live events, chat, and multiplayer synchronization. Since the server handled all business logic, the iOS client focused on responsive UI updates, JSON messaging, persistent socket connections, and a smooth native user experience—very similar to your architecture. I can build the native SwiftUI client for Revaliday, integrating seamlessly with your existing Java WebSocket server. I'll implement the login flow, matchmaking lobby, live quiz interface, timer, chat, and JSON-based communication while following Apple's best practices with clean, modular, and maintainable code. Since your backend and game logic are already complete, I can focus on delivering a polished, high-performance iOS experience. One question: do you already have the UI/UX designs (Figma/screens), or should I recreate the interface based on your existing web client? Thanks, InvokeTech
$450 USD in 7 days
5.6
5.6

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