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This app is near completion, i have attached an example. I have the full code repository and only need updates. I want the ability to add usernames and have users be listed on a page based in order of the amount of time they have spent. like a ranking. I will require assistance completing in app purchase that is required to save progress in the app. Only one in app purchase. The project is written in react native and I will need to see a working version on Expo Go. Project Overview: The Ascent Simplicity is key, this is essentially a one page app. Endless runner style sprites coming across the screen. I have all illustrations and layers already made. Below is a link to the almost complete app. OVERVIEW: The Ascent is a minimalist, high-performance mobile focus app designed for iOS and Android. It translates the ancient Greek myth of Sisyphus into a powerful, game-like psychological anchor for daily productivity. 1. The Core Experience Upon starting a session, users select their focus duration (e.g., 25, 45, or 60 minutes). The app transitions to a clean, distraction-free screen where Sisyphus endlessly pushes a low-poly crimson boulder up a steep 33° slope. Background layers (terracotta mountains and shifting clouds) scroll past to create a sense of scale, while a precise, real-time HUD tracks their climbing lifetime elevation progress down to five decimal places (e.g., 0.12450 MI). [login to view URL]
Project ID: 40632953
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Hi there, I can enhance your app by implementing the username feature and setting up the in-app purchase for progress saving. With my experience in React Native and mobile development, I can ensure a smooth integration and a well-structured user ranking system. I understand the importance of having a working version on Expo Go, and I am committed to delivering a high-quality product that meets your requirements. Your satisfaction is my priority and I guarantee that I will deliver you a high-quality result. Regards, Ali
$70 USD in 1 day
6.4
6.4
29 freelancers are bidding on average $97 USD for this job

As a seasoned mobile app developer with well-rounded experience across various industries, your project aligns perfectly with the depth of my skills in React Native and API integration. Prominently highlighted by my previous projects such as ANCER - an event management app and PresCrypto - a DIY doctor appointment booking software, I'm adept at intertwining complex features like username implementation and in-app purchases into comprehensive systems. My commitment to delivering world-class solutions within tight schedules, aligns perfectly with your need to quickly update your almost complete app. I'd be thrilled to add value to your impressive Ascent project. In fact, its core idea of applying Greek myths for focus and productivity resonates deeply with my approach to transforming creative ideas into powerful mobile applications; simplicity linked to functionality and maximum user experience. Choosing me not only grants you a wealth of experience but also relieves you of any communication or planning hiccups as I smoothly manage entire projects from start to finish. Additionally, I bring the added advantage of double proficiency; having been skilled in both Flutter and React Native, whatever your future cross-platform needs may be,I am excellently positioned to serve you in any capacity. Let's make your vision of The Ascent being a productive, game-like psychological reality Decrypt now!
$120 USD in 3 days
6.6
6.6

Hi, I can take over the existing React Native codebase and complete the remaining features without rebuilding what you already have. I can add the username system and ranking page so users are listed based on their total focus/elevation time, and I can also finish the single in-app purchase required to unlock/save progress. Since the project is already near completion, I’ll first review the existing architecture and make the updates within the current codebase while keeping the existing UI and game experience intact. I’ll test the completed build through Expo Go and make sure the new functionality works properly on both iOS and Android. I’d also like to review the current repository and the example app before confirming the exact timeline and fixed price. If you share the repository and Expo project details, I can start with the existing build immediately. Best regards, Muhammad Rizwan LA
$85 USD in 7 days
6.9
6.9

I can complete the existing React Native app by adding username-based rankings ordered by total focus time, integrating the single in-app purchase required to save progress, and making sure the updated build runs correctly in Expo Go. I’ll work directly from your current repository, preserve the existing design and gameplay, and focus only on the remaining functionality needed to finish the app.
$70 USD in 1 day
6.1
6.1

Your ranking feature needs one reliable source of truth for usernames and accumulated focus time. I’d start by reviewing the existing React Native/Expo code and current progress-saving flow, then add the username + leaderboard logic without disturbing the nearly finished runner experience. For the ranking, I’d make sure accumulated time is stored consistently and sorted server-side rather than trusting device state. I’d also finish the single in-app purchase required for saving progress, including purchase restoration and failure/cancel handling. Expo Go is important here: I’ll keep the app testable there where supported, while accounting for the fact that native in-app purchase behavior may require a development build for final device testing. Could you share how user progress is currently stored—locally only, or is there already a backend/database in the repository?
$100 USD in 1 day
5.7
5.7

The update involves integrating a username system that tracks user engagement by time spent, creating an ordered leaderboard. This will leverage React Native’s state and list rendering capabilities for smooth performance. Implementing in-app purchase for save functionality will require bridging native iOS purchase APIs within the existing React Native framework. I’ll provide interim builds on Expo Go to validate functionality during development. What is the primary user behavior or goal you want to encourage with the username ranking feature?
$95 USD in 5 days
5.2
5.2

Hi, I have extensive experience with React Native apps and optimizing user engagement features. I will implement a well-structured username feature with ranking based on time spent, leveraging your existing app code. How do you envision the user interface for the ranking system to seamlessly integrate with your current app design? 'Sincerely,' Juan Aponte
$180 USD in 5 days
5.5
5.5

Hi , I just saw your project regarding React Native App Update - I need a developer skilled in React Native for this job. You'll update my almost complete app in two ways:- Add a username feature for users on the platform. This should be well structured to display users in order of the amount of time spent on the app, effectively creating a ranking system. Your progress should be demonstrated by showing a working version via Expo Go.I will provide you with access to the full code repository. . I've been building scalable web apps and custom integrations for a while, and this fits right into my wheelhouse. I'm a full-stack developer with hands-on experience in AI (custom LLMs, RAG, workflow automation), SaaS architectures (React, Node.js), and Web3 integrations. Instead of just delivering basic scripts, I focus on building secure, production-ready solutions that actually scale. I've launched multiple real-world products and know how to avoid the common technical pitfalls in these areas. Let's have a quick chat so we can go over your exact needs. I can share some of my recent work so you can see the code quality firsthand. Best, Emre
$70 USD in 9 days
4.6
4.6

Hi, I'll add this without changing the existing architecture since the app is already close to completion. First, I'll implement a proper username system with validation and migrate existing users safely, then update the ranking logic so users are ordered by their total accumulated focus time with efficient queries and real-time leaderboard updates. I'll complete the single in-app purchase flow to unlock progress saving, verify purchases correctly on both iOS and Android, and ensure it integrates cleanly with the current app state without affecting existing functionality. Finally, I'll test everything in Expo Go, confirm the gameplay, leaderboard, and purchase flow work together smoothly, and provide the updated source ready for release. I can start immediately.
$75 USD in 1 day
4.6
4.6

Hello! I'll add the username feature to your React Native app and implement the user ranking display so your platform is fully production-ready. I specialize in React Native and Mobile App Development with extensive experience in iOS Development and Backend Development. I've built user profile systems with custom username logic, integrated API endpoints for user data retrieval and sorting, and implemented ranked list displays that update dynamically based on activity metrics. My work with JavaScript and API Integration ensures the username feature connects seamlessly with your existing backend while maintaining clean, maintainable code. Here's how I'll complete your app: - Review your repository and existing user structure to understand the current implementation - Build the username feature with proper validation, uniqueness checks, and database integration - Implement the ranked user display with sorting logic based on activity amounts and real-time updates Could you clarify what specific metric determines the user ranking order, and does the username need to be editable after initial setup? I can start immediately once I have repository access. Let me know your timeline and any specific design preferences, and we'll finalize everything through Freelancer messages. Best regards, Jordan Rafael
$78 USD in 4 days
4.1
4.1

Greeting! We can finish The Ascent in React Native, including time-based rankings, username management, and the single in-app purchase while keeping your existing code and illustrations intact. We are a team of 62 professionals with over 9 years of experience in React Native, Expo, mobile apps, and payments. Here's how we can help: * Add username ranking by focus time * Complete the in-app purchase flow * Test and deliver via Expo Go * Fix and polish existing functionality Could you share the repository and current purchase setup? We can review the code and get the working Expo version ready.
$95 USD in 7 days
2.6
2.6

Hi, Before touching any code I'd pull the repo and run it in Expo Go myself to see exactly what's already wired up versus what's placeholder. I'd also check how progress and session time are currently being tracked and stored, since that's the piece the ranking feature and the in-app purchase both depend on. My guess is the timer logic is solid but there's no user accounts or persistent storage yet, which is really the core of both features you're asking for. For the leaderboard, I'd add simple username entry and store total focus time per user, then sort and display that on its own screen. For the purchase, I'd set up the one-time unlock using RevenueCat or Apple's native in-app purchase system, tied to whatever gates progress-saving right now. The part I'd want to nail down early is whether progress needs to sync across devices or just save locally, since that changes whether I need a backend. I can have both features built and tested in Expo Go in about a day. Can send the repo back over once I've had a look. Best, Emrah
$82 USD in 1 day
2.1
2.1

Hello, I understand that you require React Native app updates. I can implement the username ranking system and set up the in-app purchase. I will test the updates using Expo Go to ensure everything works ASAP. With 5+ years of experience and a 5 star rating, I am confident that I can provide you with the best solution regarding your React Native app updates. I assure you with professional communication until your work is done. Let's connect in chat so I can understand your requirements and get started right away. Regards, Faisal Javed
$85 USD in 1 day
0.5
0.5

Hi, I work on mobile backends and ML systems, with strong experience in React Native integrations, state persistence, and production reliability. The tricky parts here are accurate time tracking and ranking integrity across sessions, especially with app pauses and offline use. Ordering users by “time spent” needs consistent aggregation and protection against tampering. The single purchase gating save-progress adds edge cases around entitlement state, restore flows, and failure handling. Ensuring behavior is consistent inside Expo Go versus production builds can also surface differences. How is session time currently recorded and persisted across app restarts? What defines the source of truth for rankings—local state, remote store, or both? How are purchase states validated and restored across devices? I can review the repo and move this forward quickly.
$85 USD in 7 days
0.0
0.0

Hi, I’ll update your React Native Expo app with ranking, usernames, and in-app purchase flow. Creating a smooth progress-saving experience with a working leaderboard and Expo Go testing is key. I’ve worked on projects where React Native apps needed final feature additions, payment flows, and clean integration without disturbing the existing design. I’m ready to work directly with your repository, complete the remaining functionality, test the app properly, and deliver a polished version that is ready for the next stage. Thank you.
$85 USD in 7 days
0.0
0.0

Hi, I can update your React Native application by implementing the custom username leaderboard system and integrating the required in-app purchase. I will structure the state management to track user focus time accurately, sort active users dynamically, and display ranked leaderboards. Additionally, I will configure the App Store and Google Play purchase SDKs to ensure seamless entitlement tracking so progress saves reliably across Expo Go test builds. Let me know if you plan to use RevenueCat for managing the single in-app purchase state or if you prefer native react-native-iap bindings. Recently, I worked on a similar project called FocusTrack, a Gamified Productivity App designed to help remote professionals maintain daily focus through competitive timed milestones. I engineered the mobile frontend using React Native and JavaScript, building custom backend APIs to record user durations and return ordered user rankings. I integrated native in-app purchases to unlock premium persistent cloud saving features, ensuring full compatibility for live previews within Expo Go environments. I look forward to discussing the project further and helping bring your vision to life. Best, Ariba
$85 USD in 7 days
0.0
0.0

Hello, How are you! I've carefully checked your requirements and really interested in this job. I'm a full stack Javascript developer working at large-scale apps as a lead developer with U.S. and European teams. I'm offering best quality and highest performance at lowest price. I can complete your project on time and your will experience great satisfaction with me. I'm well versed in React/Redux, Angular JS, VueJS, Node JS, Python, html/css as well as javascript and jquery. Simply, I have rich experienced in JavaScript, Mobile App Development, iOS Development, Backend Development, React Native, Mobile Development, API Integration, Expo as you enumrated. For more information about me, please refer to my portfolios. I'm ready to discuss your project and start immediately. Looking forward to hearing you back and discussing all details. Thanks & Regards, Aamir
$100 USD in 5 days
0.0
0.0

Hello, With over a decade of experience as a Full-Stack Engineer, I am well-versed in leveraging React Native to breathe life into ambitious projects like yours. My proficiency in both Mobile and iOS Development further ensures I can meet your needs precisely, and my mastery over clean architecture would complement the simplicity your app calls for. Given that The Ascent is “an endless runner style” app, my understanding of high-performance platforms and focus on efficiency and speed aligns perfectly with your project’s objective. On the note of incorporating usernames and sorting users based on their in-app performance, it’s not just about elegant coding; it’s about building features that genuinely enrich user experience. With my API Integration skills, I can help you introduce these functionalities seamlessly into your existing app structure. Lastly, I understand the pivotal role time plays in every project, hence why I stress delivering reliable results promptly without compromising quality. My technical expertise combined with clear communication fosters smooth collaboration and ensures you’re consistently updated and involved throughout the process. The Ascent has great potential to be a success, let me help you achieve that! Thanks!
$70 USD in 6 days
0.0
0.0

Hello, With a comprehensive, decade-long background in API integration and mobile development, I firmly believe my skills make me the ideal choice for your React Native project. I comprehend the intricacies of your app, and it's exciting to take part in manifesting your vision. Let me bring my proficiency and familiarity, especially in backend development, to create a well-laid structure for displaying users based on their time spent using the app. Furthermore, my robust understanding of iOS Development will be priceless as we configure the in-app purchase that's crucial for saving progress. From personal experience, being able to store progress not only incentivizes users but guarantees they can pick up exactly where they left off. We'll ensure this is seamlessly integrated into your app. Let my proficiency not just as a React Native developer but as an iOS developer elevate your app. Finally, I want to accentuate my commitment to quality and timeliness, providing you with by-the-dot progress updates. As a seasoned freelancer, this has always set me apart. Given the nature of your project , simplicity with optimal performance , I appreciate that precision is key. My hands-on approach ensures clean architecture and high-quality production-ready results you can trust. Let's collaborate on making The Ascent soar! Thanks!
$70 USD in 6 days
0.0
0.0

Dear Client, I reviewed your project requirements and I am interested in working with you. I have extensive experience delivering Mobile Development, JavaScript, API Integration, Expo, Mobile App Development, iOS Development, Backend Development and React Native. I focus on understanding the requirements clearly, providing a practical solution, and delivering accurate, well-documented work on schedule. I can review your existing materials, identify the best technical approach, and manage the project from planning through final delivery. You will receive clear communication, regular progress updates, and full support throughout the project. I am available to begin immediately and would be glad to discuss the scope, timeline, and budget. Best regards, Elijah M.
$200 USD in 3 days
0.0
0.0

Hello, I understand that you require React Native app updates. You need to add a username feature displaying users in order. I will update your React Native app and connect the required APIs. With 5+ years of experience and a 5 star rating, I am confident that I can provide you with the best solution regarding your React Native app update. I assure you with professional communication until your work is done. Regards, Syed Anas
$85 USD in 1 day
0.0
0.0

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