Hire the Best App Development Freelancers
in the United States

Clients rate our App Development professionals
Rating is 4.8 out of 5.
4.8/5
Based on 382 client reviews
Bilal M.

Dublin, Ohio

$10/hr
4.7
39 jobs

Hi, I'm a dedicated and detail-oriented freelancer specializing in App Testing, Data Entry, Content Creation, Video Production, Virtual Assistance, Translation, and Voice-Over Services. I help businesses improve their products and workflows by providing thorough app and website testing, accurate data management, engaging content creation, and reliable administrative support. I am committed to delivering high-quality work, meeting deadlines, and maintaining clear communication throughout every project. My Services Include: • Mobile & Web App Testing (Android & iOS) • Bug Reporting & User Experience Feedback • Data Entry & Internet Research • Content Creation & Editing • Video Production & Basic Video Editing • Virtual Assistance & Administrative Support • Pashto ↔ English Translation • Dari/Farsi ↔ English Translation • Pashto Voice-Over • Dari/Farsi Voice-Over • Transcription & Localization Services I take pride in providing accurate, professional, and timely results that help clients achieve their goals. Whether you need a reliable tester, translator, voice-over artist, content creator, or virtual assistant, I am ready to support your project and ensure its success.

  • Translation
  • Data Entry
  • Pashto
  • Voice Recording
  • Mobile App Testing
  • Review Website
  • Review or Feedback Collection
  • Writing
  • Audio Recording
  • iOS
  • Customer Service
  • Video Production
  • UGC
  • Usability Testing
  • Manual Testing
  • Mobile App Development
  • Application Review & Optimization
  • Review
Syed Mohsin K.

Redmond, Washington

$40/hr
4.6
40 jobs

🏆 Top Rated | 100% Job Success | 5/5 Client Ratings | 15+ live apps shipped 🏆 💡 I build mobile apps with AI baked in not bolted on. Hi, I'm an Android & iOS Mobile App Developer and AI Integration Expert, helping founders and established teams ship production-quality mobile products with real AI features users actually use. 🚀 Android & iOS Mobile App Developer | AI Integration Expert | Swift • Kotlin • React Native • Flutter As a Top Rated Android & iOS mobile app developer on Upwork with a 100% Job Success Score and 15+ live apps shipped, I help clients go from a rough idea to a scalable, AI-powered mobile product on the App Store and Google Play. Whether you need a native iOS app with Swift, a native Android app with Kotlin, or a cross-platform solution, I deliver Android & iOS mobile app development with AI integration OpenAI GPT-4, Google Gemini, LangChain, and RAG pipelines built in from day one. From health & wellness and fintech to e-commerce and SaaS, my experience as an AI-integrated mobile app developer spans multiple industries backed by a production team that has shipped 50+ live products, so you're never bottlenecked by a single point of failure. ✅ Why Partner with Me as Your Android & iOS Mobile App Developer: 15+ successful iOS and Android apps, live on the App Store and Google Play AI integration expertise OpenAI GPT-4, Google Gemini, LangChain, RAG pipelines, vector databases 100% Job Success Score and Top Rated status on Upwork Backed by a full production team for scalability beyond a single freelancer Cross-platform builds (Flutter, React Native) and native builds (Swift, Kotlin) AI-powered mobile apps chatbots, smart assistants, predictive features, semantic search Fintech, Health & Wellness, E-commerce, and SaaS mobile app development MVP App Development from idea to App Store & Google Play launch AI Mobile App Development: retrofitting AI into existing products users already love 🛠️ Services I Provide as an Android & iOS Mobile App Developer (AI Integration): Native iOS app development with Swift & SwiftUI Native Android app development with Kotlin & Jetpack Compose Cross-platform app development with React Native & Flutter AI integration: OpenAI GPT-4, Gemini, LangChain, RAG pipelines, vector databases UI/UX design for iOS and Android apps Backend & cloud integrations: Firebase, Supabase, AWS REST and GraphQL API development CI/CD and App Store / Google Play submission 🎯 Industries I Specialize In as an Android & iOS Mobile App Developer: 💊 Health & Wellness | 💰 Fintech | 🛒 E-Commerce | 📊 SaaS Platforms | 🤖 AI-Powered Apps All powered by Android & iOS mobile app development with AI integration built in. 🚀 Advanced Features I Build with AI Integration: ✔ AI chatbots & smart assistants (OpenAI, Gemini) ✔ RAG pipelines with vector databases for context-aware AI ✔ Predictive features & personalization engines ✔ Firebase & cloud-based backend integrations ✔ Real-time chat & push notifications ✔ Social login (Google, Apple) ✔ Offline mode & smart data sync ✔ App Store Optimization & submission 💬 Why Choose Me as Your Android & iOS Mobile App Developer: I bring deep expertise in Android & iOS mobile app development with AI integration built in from day one not retrofitted as an afterthought. Whether you're a startup building an MVP or an established team modernizing your product with AI, I'm the Android & iOS mobile app developer and AI integration expert who can turn your vision into a shipped, scalable product. 📲 Let's connect and build a powerful AI-integrated mobile app together. Your trusted Android & iOS mobile app developer and AI integration expert is just one click away. Send over your brief or even a rough idea I'll respond with questions, a realistic timeline, and an honest take on fit. Mobile App Development, iOS Development, Android Development, Flutter, React Native, Swift, Kotlin, Firebase, OpenAI API, ChatGPT Integration, Gemini AI, AI Mobile Apps, Cross-Platform App Development, API Integration, UI/UX Design, Native Mobile Apps, SaaS Apps, E-commerce App Development, RAG, LangChain, Vector Database

  • App Development
  • Mobile App Development
  • iOS Development
  • Android App
  • Swift
  • Kotlin
  • React Native
  • Flutter
  • Firebase
  • OpenAI API
  • ChatGPT API
  • Gemini
  • API Integration
  • AI App Development
  • AI Chatbot
  • App Store
  • In-App Purchases
  • Hybrid App Development
  • iOS
  • Android
Rupinder S.

Drexel Hill, Pennsylvania

$75/hr
4.6
78 jobs

If you are looking for a motivated, safe set of hands to take the weight of your project off your shoulders and work with you to get the job done right, then let’s have a chat. Here’s how: 1. Send me an Upwork message 2. On Upwork message, click on the green “Schedule a meeting” button, choose 30 minutes and I will confirm a time slot. 3. That way we can hop on a strategy call to discuss your project further and make sure we are a great fit together. I lived in Drexel HIll, PA. I am a motivated and creative US based freelancer with over 10 years of successful freelancing in multiple areas of Web & Mobile development. I have experience in ReactJS, NextJS, NodeJS, AngularJS, JavaScript, Laravel, CodeIgniter, Cake PHP, Rest APIs, and WordPress. Expert in React Native Mobile Applications Enterprise level Web | Mobile applications ✔ Detailed experiences are: 1) Backend Development • PHP - Laravel MVC, CodeIgniter, Cake PHP • Node.js - Express, Socket.io, Meteor • Python - Django, Flask • MYSQL, MongoDB, NoSQL, Firebase 2) Front-end Development • Angular, React.js, NextJS, Vue.js • CSS/SCSS, HTML, JavaScript, Jquery 3) iOS | Android app Development • Swift, Java, Kotlin, React Native, Ionic, Flutter • RxJava, RxSwift • MVP, MVVM My priorities are - - Best quality - Bug-free - Delivery in a timely manner - Developing an app, testing it, and making sure users won't have any problems when using the final product; - Helping to choose the best tools for analytics, testing, marketing, reporting, and more.

  • Laravel
  • Node.js
  • MongoDB
  • Mobile App Development
  • Firebase Cloud Firestore
  • iOS Development
  • Swift
  • React Native
  • PostgreSQL
  • Android App Development
  • CodeIgniter
  • PHP
  • AWS Lambda
  • Socket.io
Fazeel T.

Irving, Texas

$35/hr
4.1
35 jobs

🏆 Top-Rated Full Stack Web & App Developer ⚡ Software Engineer with Amazon Experience 🕗 Working across EST and PST time zones ✔ 11+ Years of Expertise | 100% Client Satisfaction | Full-Time Freelancer Hello, This is Fazeel Tola, who has vast expertise in full-stack development and a background in computer science studies, I am a passionate full-stack web and app developer well-versed in App development, React native, Flutter, React, Node, MongoDB, AWS, and CMS platforms like Wix, webflow, WordPress, Elementor, Shopify, and Squarespace. I have overall 7 years of experience in the development field, My track record includes successfully delivering projects that meet clients' unique requirements, while my efficient project management ensures timely and high-quality outcomes. Why you choose me: - Provides visually appealing and fully functional websites created with pride. - Enhance your online presence through expertly crafted websites. - Top-notch service and seamless collaboration experience guaranteed. - Transform your visions into reality with our collaborative approach. - Elevate your brand and drive your business forward. - Embark on an exciting journey by getting in touch today. Please find my expertise below: ✅ React Native ✅ Flutter ✅ React ✅ Node.JS ✅ Three.JS ✅ VUE.JS ✅ Express.JS ✅ MONGO DB. SQL etc ✅ AWS Server Deployment and Configuration ✅ LARAVEL ✅ PHP ✅ WordPress development ✅ Wix development ✅ Wix Velo ✅ Wix store ✅ Divi theme ✅ Elementor ✅ Woo-Commerce setup ✅ E-commerce ✅ Shopify development ✅ Squarespace development ✅ SEO-optimization ✅ Restful-API integration ✅ Payment methods Integration ✅ HTML 5 ✅ CSS 3 ✅ JavaScript Ready to take your brand to the next level? Let's collaborate and create exceptional designs that captivate your audience. Contact me today, and let's discuss how I can help bring your vision to life! Best Regards, Fazeel Tola.

  • App Development
  • WordPress
  • Shopify
  • Front-End Development
  • Back-End Development
  • CMS Development
  • Design Concept
  • React
  • Node.js
  • ExpressJS
  • API
  • Flutter
  • React Native
  • App Design
Quentin H.

Girard, Ohio

$75/hr
4.9
59 jobs

I've spent 11 years working with clients of all sizes across a lot of different industries. That breadth means I can adapt quickly to just about any app idea and pick up new domains fast. I know the grind of building out a first MVP and I know how to jump into an existing codebase and find the path of least resistance to get it fixed. Both sides of that equation. What I like most is looking at the long-term picture - planning different stages, thinking through feature releases, watching an app grow. Most of my best client relationships have lasted years because of that. It's good for them and honestly it represents stability for me too. That alignment tends to produce better work. If you're looking for someone to own the mobile side of your product and stick around, send me a message. — Quentin H.

  • Swift
  • SwiftUI
  • Objective-C
  • UIKit
  • Kotlin
  • Java
  • Android
  • iOS Development
  • Mobile App Development
  • Firebase
  • REST API
  • SQL
  • Software Architecture
  • UI/UX Prototyping
  • Code Refactoring
Waqas A.

Frederick, Maryland

$25/hr
5.0
8 jobs

Most people who message me are in one of three situations: → They have an idea and need it built properly the first time → Their product is live but slow, buggy, or abandoned by the last developer → They want AI in their product without ending up with a ChatGPT wrapper I've spent 9+ years building and fixing products like these. I'm Top Rated on Upwork with 40+ web and mobile products shipped SaaS platforms, HealthTech and FinTech apps, marketplaces, and social products for startups and growing businesses worldwide. ☑️ 𝐖𝐞𝐛 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: → Full stack web apps with React, Next.js, Node.js, Laravel, Express, and MongoDB → SaaS platforms, dashboards, client portals, and internal tools → REST and GraphQL APIs with auth, role-based access, and clean docs → Deployment on Vercel and AWS with CI/CD ☑️ 𝐌𝐨𝐛𝐢𝐥𝐞 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: → Cross-platform iOS and Android apps with React Native and Expo → Push notifications, in-app purchases, offline support, deep linking → App Store and Google Play submission, release management, production support ☑️ 𝗔𝗰𝗿𝗼𝘀𝘀 𝗯𝗼𝘁𝗵: → AI features that plug into your real data: document Q&A, OCR pipelines, recommendation systems, agents on the OpenAI and Claude APIs → Payments and subscriptions with Stripe and RevenueCat → Real-time features: chat, live updates, WebSockets ☑️ 𝐑𝐞𝐬𝐜𝐮𝐞 𝐰𝐨𝐫𝐤: If your existing product is struggling on the web or mobile. I read the code before quoting anything. Sometimes it needs refactoring, sometimes a few targeted fixes. I'll tell you which. Rebuilding things that don't need rebuilding is how developers pad invoices. ☑️ 𝐇𝐨𝐰 𝐈 𝐰𝐨𝐫𝐤: → TypeScript by default, code your next developer can read → Updates in plain English, no surprises on scope or timeline → Honest pushback when a requirement costs more than it returns → Comfortable owning a product end to end, or joining your team to take on the hard problems ☑️ 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: React, Next.js, React Native, Expo, Node.js, Express, MongoDB, PostgreSQL, TypeScript, Firebase, Supabase, OpenAI API, Stripe, RevenueCat, AWS Tell me which of the three situations you're in. Send whatever you have an idea, a repo, a broken build and I'll give you a straight answer on the fastest way forward. Let's build something exceptional together.

  • React Native
  • Mobile App Development
  • Web Application Development
  • Next.js
  • Full-Stack Development
  • React
  • Node.js
  • TypeScript
  • JavaScript
  • Firebase
  • API Integration
  • Tailwind CSS
  • PostgreSQL
  • Amazon Web Services
  • REST API
  • iOS Development
  • iOS
  • Android App Development
  • Push Notifications
  • Laravel

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