Hire Freelance Mobile App Developer

Bill Vivino Technology designs and builds mobile apps for startups and small teams. Whether you're launching an MVP or scaling your product, we deliver iOS, Android, and cross-platform apps that ship fast and scale cleanly. Based in North Jersey, we serve the NYC metro area and work with clients across the United States.

Why Choose Bill Vivino Technology

With years of experience building mobile apps using SwiftUI, Kotlin, React Native, and Firebase, we help startups get to market faster with high-quality mobile software and no bloated teams. We’re based in North Jersey and proudly serve clients in the NYC area and throughout the U.S.

Core Development Services

  • iOS & SwiftUI app development
  • Android & Kotlin app development
  • React Native cross-platform/hybrid apps
  • Backend APIs & Firebase/Node.js
  • AR/VR & Unity-based experiences
  • AI & Machine Learning integrations

Software Development Portfolio

Browse web, mobile and AR projects delivered by Bill Vivino Technology for innovative B2B clients.

Featured Software Projects

ModaVision App Logo
ModaVision

Find Your Fit. Everytime.

A virtual fitting‑room app built from scratch using SwiftUI components and Firebase.

NASA WeatherSats AR
NASA WeatherSats AR

A tour of the weather‑satellite fleet, built in Unity.

NASA WeatherSats AR – iOS / Android
Stupid Simple Macro Tracker
Stupid Simple Macro Tracker

iOS nutrition‑tracking app. I shipped the 8.5 & 8.6 version updates.

New Digital Commune
New Digital Commune

Mobile social app for creatives.

Arrows Unity Game
Arrows

A casual Web‑GL archery game built in Unity.

Soccer Unity Game
Soccer Mini‑Game

A simple Unity soccer demo built from a tutorial.

Play Soccer
Eureka Canvas
Eureka Canvas

A SwiftUI sports‑coaching app featuring StoreKit in‑app purchases.

Planet XR
Planet XR

An AR exploration of the solar system; I’m a core member of the development team.

Ready to Start Your Project?

Contact Us

Testimonials

5.0 average across 30 client reviews · See all reviews