Mobile App Development Services Built for Business Results
From concept and design through development, testing, and launch, MIS Services delivers custom iOS and Android applications that are fast, intuitive, and built to scale. Whether you need a consumer-facing app, an internal business tool, or a React Native cross-platform solution, our Long Island development team handles every stage of the process.
iOS App Development
We build native iOS applications for iPhone and iPad using Swift and SwiftUI, optimised for Apple's latest hardware and App Store guidelines. Every iOS app we deliver is tested across multiple device configurations for performance, stability, and App Store approval readiness before it ever reaches your users.
Android App Development
Our Android developers build high-performance apps using Kotlin and Jetpack Compose, tailored to work flawlessly across the wide range of Android devices your users are actually running. From Google Play submission to post-launch updates, we manage the full Android development lifecycle.
React Native Cross-Platform
Get a fully featured iOS and Android app from a single codebase with React Native. This approach dramatically reduces development time and cost while still delivering near-native performance and a consistent user experience across platforms — the ideal choice for most business app projects.
UI/UX Design
Great apps start with great design. Our UX designers map user journeys, build interactive prototypes, and create pixel-perfect interfaces that are intuitive from the first screen. We follow platform-specific design guidelines for iOS and Android so your app feels native on both systems.
API & Backend Integration
Most business apps need a robust backend — payment processing, user authentication, data sync, push notifications, and third-party integrations. We design and build scalable REST and GraphQL APIs that power your mobile app reliably and securely from day one through long-term growth.
App Store Optimization
Getting your app built is only half the battle — it also needs to be found. We optimise your App Store and Google Play listings with keyword-rich titles and descriptions, compelling screenshots, and A/B-tested creative assets that drive organic downloads from users actively searching for what you offer.
Need a great website to complement your app? See Web Design Services →
50+ Apps Launched Across iOS & Android
Our mobile development team has delivered over 50 successful apps across industries including retail, healthcare, logistics, hospitality, and professional services. We combine technical depth with strong project management to keep every build on time, on budget, and performing at the level your users expect on day one.
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How We Build Your App in 4 Structured Phases
Discovery & Scoping
We begin with a structured discovery session to fully understand your business goals, target users, and technical requirements. We map out all features, define the technology stack, and produce a detailed project scope document with timeline and budget — so there are no surprises during development.
UI/UX Design
Our designers create wireframes and interactive prototypes for every screen of your app. You review and approve designs before a single line of code is written, ensuring the final product looks and behaves exactly the way you envisioned it. We iterate based on your feedback until the design is perfect.
Development & QA
Our developers build your app in structured sprints, delivering testable builds throughout the process so you can review progress in real time. Every feature undergoes thorough quality assurance testing — including functional testing, performance testing, and device compatibility checks — before being marked complete.
Launch & Support
We manage the full submission process for the App Store and Google Play, handling all technical requirements and review guidelines. After launch, we monitor performance, address user feedback, and provide ongoing maintenance to keep your app running smoothly as platforms and devices evolve.
Want a mobile-ready website while your app is in development? Explore Responsive Web Design →
Mobile App Development Plans
Starter
Existing apps + maintenance
- ✓ Bug fixes + minor features
- ✓ OS updates + compatibility
- ✓ App store metadata
- ✓ Performance monitoring
- ✓ Email support
Growth
Active feature development
- ✓ Everything in Starter
- ✓ Custom feature builds
- ✓ Backend + API integrations
- ✓ App store optimization
- ✓ Monthly call
Enterprise
Complex app development
- ✓ Everything in Growth
- ✓ Full sprint development
- ✓ Architecture + scaling
- ✓ Native iOS + Android
- ✓ Dedicated developer
Month-to-month, no long-term contract.
Frequently Asked Questions
Build Your Mobile App
Tell us about your app idea and we will scope it out, design it, and build it — on time, on budget.