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  • Fixed price
  • Expert
  • Est. budget: $2,000.00

Peachtree Care Health Services (PCHS) is seeking an experienced mobile app developer to update an existing iOS and Android application currently published in the Apple App Store and Google Play Store. Scope: Update existing app screens and workflows Improve UI/UX Fix bugs and compatibility issues Publish updates to Apple App Store and Google Play Review backend/API integrations Preferred Skills: React Native, Flutter, Swift, Kotlin, or existing app framework Experience with healthcare apps App Store and Google Play deployment experience Atlanta-based developer preferred Project Type: Freelance / Contract Potential for ongoing maintenance work Please provide: Portfolio links Similar apps you have worked on Hourly rate or project estimate Preference: Atlanta-area candidates

  • Hourly: $15.00 - $30.00
  • Intermediate
  • Est. time: 1 to 3 months, Less than 30 hrs/week

We manage a routing and real-time progress app for our pest control business. I'm looking for someone to be on call for maintenance and potential future development. The ideal candidate will have experience in mobile app development and be able to handle updates and improvements efficiently.

  • Fixed price
  • Intermediate
  • Est. budget: $5,100.00

We are seeking an experienced mobile app developer to create a broker-connected mobile application. This app will be designed to read positions, monitor trades, and send alerts, incorporating an AI chat feature. Familiarity with SaaS products is essential. If you have a proven track record of building similar applications and are adept at integrating APIs for real-time data, we want to hear from you. Your expertise will help us deliver a robust and user-friendly solution for our clients.

  • Fixed price
  • Intermediate
  • Est. budget: $300.00

Looking for a talented ios developer to fix a glitch in our existing app, could lead to other projects or upgrades on existing app.

  • Hourly
  • Intermediate
  • Est. time: 1 to 3 months, Hours to be determined

This studio is a luxury Pilates studio and café in NYC. We have a basic booking app and want to build a premium iOS and Android app. We are looking for a developer to create a high-quality mobile app that enhances the user experience and supports our business needs.

  • Fixed price
  • Expert
  • Est. budget: $100.00

We are looking for an experienced Mobile App Developer to help improve, fix, and enhance an existing Android and iOS mobile application. The ideal candidate should have strong experience with Flutter or React Native, mobile app debugging, crash fixing, UI/UX improvements, API integration, Firebase or backend connectivity, push notifications, performance optimization, and app store deployment. Responsibilities: Fix bugs and crashes in the existing mobile app Modify and enhance current app features Improve app performance, speed, and stability Update UI/UX screens where needed Integrate or fix APIs and third-party services Work with Firebase or backend services Test the app on Android and iOS devices Prepare and publish updates to the Google Play Store and Apple App Store. Requirements: Strong experience with Flutter or React Native Experience with Android and iOS app development. Ability to debug and fix crashes efficiently. Experience with API integration and Firebase/backend connectivity. Knowledge of push notifications App testing, bug fixing, and performance optimization skills. Experience publishing apps to Google Play Store and Apple App Store Please include in your proposal: Your portfolio or similar apps you have worked on Your experience with bug fixing and crash resolution Estimated timeline for completing fixes and enhancements Your availability to start We are looking for someone reliable, detail-oriented, and able to deliver clean, stable, and high-quality mobile app updates.

  • Hourly
  • Expert
  • Est. time: 1 to 3 months, Less than 30 hrs/week

Project Overview I am the owner of 8pm-Art Productions LLC and I’m looking for an experienced senior mobile app developer or small development team to help bring TailsDate across the finish line. The app is already substantially built. This is not a rebuild from scratch. I need a highly skilled developer who can step into an existing codebase, understand the architecture quickly, and help make the app production-ready, stable, scalable, polished, and smooth for launch. What Needs to Be Done The project may include: Bug fixing and issue resolution Code review and architecture assessment Refactoring where needed (without unnecessary rewrites) Performance optimization UX/UI polish and interaction improvements QA hardening and edge-case testing Backend/API optimization Database and server performance review Security review and best practices Crash analytics and debugging App Store / Google Play production readiness Scale preparation for user growth Documentation cleanup Current Status Existing assets are owned by my Florida LLC and include: Mobile app source code Backend source code UX/UI designs Brand assets Website Domain Copyrighted audio/jingle Developer accounts The foundation is built — I need an expert to help make it launch-ready. Required Experience Please apply only if you have: 5+ years mobile app development experience Experience taking existing apps to production Strong debugging and optimization skills Experience working with inherited codebases Experience with scaling consumer apps Strong communication and documentation skills Ability to sign NDA before access Bonus If You Have Experience With Dating or social apps Subscription/paywall systems Push notifications Real-time messaging Analytics User onboarding optimization Security and privacy compliance To Apply, Please Include Examples of apps you helped finish, optimize, or rescue Links to live apps in the App Store / Google Play Your tech stack expertise Your approach when inheriting someone else’s code Your availability and estimated weekly hours This is not a project for junior developers or agencies that want to rebuild from scratch. I’m looking for someone who respects existing work, can improve what is already built, and knows how to make an app feel polished, stable, and launch-ready. Possible future partnership. If that sounds like you, I’d love to talk.

  • Fixed price
  • Expert
  • Est. budget: $5,000.00

React Native Developer Needed — Healthcare Dating App (StatDate) I'm a Registered Nurse with 13 years of ICU and PACU experience building StatDate — a dating app exclusively for verified healthcare professionals and EMS personnel. Think Tinder, but every user is checked against a national license database before they can interact with anyone. No impostors. No civilians. The concept is validated, the brand is built, the domain is live (statdate.com), and a full interactive prototype exists. I have a complete 40-page technical specification ready to hand off on day one. I need a developer to build the real thing. WHAT YOU ARE BUILDING - React Native app (Expo) — iOS and Android from a single codebase - Credential verification — integrates with Nursys, NPI Registry, and NREMT APIs - Swipe-based discovery feed with schedule-compatibility scoring algorithm - Real-time messaging with photo sharing - Subscription paywall — RevenueCat (mobile) + Stripe (web) - Report and block system — required for App Store approval - Node.js + PostgreSQL backend deployed on Railway - Admin dashboard for report queue and manual verification override SUBSCRIPTION TIERS - Free — swipe only, blurred likes count - On-Call ($9.99/mo) — messaging, schedule filter, full likes list, rewind - Rapid Response ($19.99/mo) — priority placement, boost, read receipts REQUIRED SKILLS — DO NOT APPLY WITHOUT THESE - React Native (Expo) — must have a live app currently in the App Store or Google Play - Node.js + Express — REST API design and implementation - PostgreSQL — schema design, migrations, query optimization - RevenueCat or Stripe — prior subscription integration required - AWS S3 or Supabase Storage — file upload experience - Real-time messaging — Socket.io or Supabase Realtime - Third-party API integration — external REST APIs with error handling NICE TO HAVE - Dating or marketplace app experience - Supabase Auth experience - App Store submission experience (Apple + Google) WHAT I PROVIDE - Complete 40-page technical specification with schema, API endpoints, screen inventory, and feature logic - Full interactive HTML prototype for UI/UX reference - Brand assets — logo, color palette, typography - Daily async availability for feedback and approvals TO APPLY — INCLUDE ALL OF THE FOLLOWING OR I WILL NOT RESPOND 1. Link to a live app you built currently in the App Store or Google Play 2. Your approach to the three license verification APIs (Nursys, NPI Registry, NREMT) 3. How you would architect real-time messaging for this app 4. Your estimated timeline 5. Your bid I will respond to qualified applicants within 48 hours.

  • Fixed price
  • Expert
  • Est. budget: $3,000.00

I have created a web version of a card-sorting college matching app for high school students. I need it rebuilt as a native iOS React Native app. This is a well-scoped job with a working product, an existing backend, and clear deliverables. You are not figuring out what to build, you are converting something that already works into a IOS App. TECH STACK • React Native (bare or Expo — justify your choice) • Gesture-based card UI using industry-standard React Native animation libraries • Calls an existing backend API that returns AI-generated college matches • Source code available on GitHub upon signing NDA • Target: iOS 16+ | Must be built with latest Xcode and iOS SDK TO APPLY YOU MUST INCLUDE: 1. One live App Store links to React Native apps you have shipped 2. Confirmation you are running Xcode 26 3. Two sentences on how you would implement the drag-to-zone card gesture. Applications missing any of the three will not be reviewed. Looking for one developer who has shipped gesture-heavy iOS apps and knows App Store submission from experience.

  • Hourly: $20.00 - $25.00
  • Expert
  • Est. time: 1 to 3 months, Less than 30 hrs/week

We are seeking an experienced mobile app developer to create a fully functional MVP that combines social features with an AI chat component. The app should be clean, stable, scalable, and ready for early user adoption, not just a clickable demo. Specific details about the app’s concept and logic will be shared under NDA. This project has a clear roadmap and strong vision for launch, and we’re looking for a thoughtful, skilled developer who can help architect and build a production-ready product with strong user experience, reliability, and performance. Complete UI/UX designs and flows have already been created in Figma, so this role is focused primarily on development, backend architecture, integrations, and implementation rather than design. Preference will be given to developers located in the DC, Maryland, or Virginia (DMV) area for easier collaboration and communication throughout the project, and occasional in-person meetings if needed. Deliverables & Requirements • Develop a cross-platform mobile app using Flutter or React Native • Build secure user authentication, profiles, friend systems, and group chat functionality • Integrate AI chat features via API with moderation and safeguard controls to prevent misuse • Implement reliable push notifications and time-sensitive user interactions across iOS • Set up scalable backend architecture and database infrastructure • Translate existing Figma designs into a polished, responsive mobile application • Conduct testing, debugging, and QA to ensure app stability and performance • Experience with Firebase, Supabase, WebSockets, or similar real-time technologies preferred • Deliver a functional app ready for deployment to the App Store

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