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
How it works
Post a job for freePost a job
Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
Hire top talent fast
Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
Payment simplified
Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.
Don't just take our word for it
“Upwork provides an umbrella-level of security. I can see a talent’s work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.”
KD
Kim Darling
Emerald Tiger
“Upwork is the best platform to hire skilled professionals when we're not looking for a full-time employee. All the companies in our portfolio use Upwork to find talent across a wide range of fields.”
DM
David Merry
Kinetic Investments
“Our very specific requirements can be a challenge—With Upwork, we’re able to access a bigger community to ensure the success of our projects.”
KK
Katja Krohn
Summa Linguae
How do I hire a App Development Freelancer in the United States on Upwork?
You can hire a App Development Freelancer in the United States on Upwork in four simple steps:
Create a job post tailored to your App Development Freelancer project scope. We'll walk you through the process step by step.
Browse top App Development Freelancer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top App Development Freelancer profiles and interview.
Hire the right App Development Freelancer for your project from Upwork, the world's largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a App Development Freelancer?
Rates charged by App Development Freelancers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a App Development Freelancer in the United States on Upwork?
As the world's work marketplace, we connect highly-skilled freelance App Development Freelancers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream App Development Freelancer team you need to succeed.
Can I hire a App Development Freelancer in the United States within 24 hours on Upwork?
Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive App Development Freelancer proposals within 24 hours of posting a job description.
Find more freelancers
Top states for App Development Freelancers in the United States