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$
USD
I will design and develop ios and android apps with react native
William Ngumo
About this gig
Agency-Level Mobile App Development
I build production-ready, scalable iOS & Android apps using React Native and Firebase (or your preferred backend).
From concept to deployment, you get unlimited revisions, ongoing support, and modern UI/UX tailored for business success. Whether its an e-commerce app, social network, or custom solution, I deliver clean, maintainable code ready to scale.
What You Get:
- Cross-platform iOS & Android apps
- Firebase backend & authentication
- Custom UI/UX (Figma, Tailwind)
- Payment integration (Stripe, PayPal, Razorpay)
- Real-time chat, notifications, live updates
- API integration & dashboards
- Analytics & tracking
- Scalable components + full source code
Industries:
E-Commerce
Health & Fitness
Food Delivery
Finance & Expense Tracking
Education & E-Learning
Social Networking
AI-Powered Apps
Contact me before ordering to discuss your project.
Get to know William Ngumo
William Ngumo
Powerful Web and Mobile Apps to Grow Your Business
- FromUnited States
- Member sinceAug 2025
Languages
English
I’m William Ngumo, founder of SuccessKeyAgency LLC, a digital agency delivering enterprise-grade web and mobile solutions. I specialize in React, Next.js, React Native, Node.js, MongoDB, Firebase, Stripe, Tailwind, and TypeScript to build scalable, secure, and production-ready platforms. From custom eCommerce stores and finance dashboards to AI-powered applications and mobile apps with real-time performance, We create solutions that help businesses grow, operate, and scale.
My Portfolio
FAQ
What do I need to provide to get started?
I’ll need a brief description of your app idea, desired features, target audience, and any reference designs or apps you like. If you have wireframes, branding assets, or a Figma file, even better!
Will the app work on both iOS and Android?
Yes! I build cross-platform mobile apps using React Native, so your app will run smoothly on both iOS and Android devices.
Can you integrate payments, authentication, or chat?
Absolutely. I can add features like Stripe payments, Firebase login, real-time chat, push notifications, and more — just mention what you need in your message.
Do you offer post-delivery support?
Yes. I offer ongoing support and unlimited revisions during the development phase. After delivery, I’m available for updates or future feature requests.
