Mobile App Developers for NYC & Connecticut Businesses
NixMar Studio is a senior team of app developers building iOS, Android, React Native and Flutter apps for startups and B2B teams in New York City and Connecticut. We design and launch your iOS + Android application with payments, push notifications and a native experience that retains and converts. Apps from $8,000 · MVPs in 8–14 weeks · Free quote in 24h.
✓ Senior engineers · ✓ React Native & Flutter experts · ✓ Store publishing included · ✓ Post-launch support
Welcome,
My Business App
Sales today
$1,240
+23%
Users
482
+12
Recent orders
Premium Product A
DeliveredMonthly Service
In progressEnterprise Pack
NewHome
Store
Profile
Support
89%
higher retention than a website: your customers come back on their own
4.8★
average rating on App Store and Play Store across our apps
3.2x
more purchases per user vs mobile browser: sales that multiply
<2s
load time per screen: fluidity that retains users
The question you should ask yourself today
Does your business need a mobile app? Here's how to tell.
If your customers buy, book or check in with you every week, an app puts your brand on their home screen, with your catalog, your cart and your notifications one tap away. For repeat-use services, that's time customers would otherwise spend in a competitor's app.
- Your brand installed 24/7 on the home screen: always visible, always accessible
- Push notifications with 5x higher open rate than email: recover inactive customers instantly
- Native speed that outperforms any mobile website: more fluidity, more conversion
- Direct access to camera, GPS, biometrics, and NFC: experiences impossible in a browser
Included Features
Mobile app features we build: payments, push, chat and more
Push Notifications
Keep your customers informed with real-time alerts about orders, offers, and news. Smart segmentation included.
Integrated Payments
Stripe, PayPal, and local gateways. Customers buy in 3 taps without leaving the app. PCI DSS compliant.
Geolocation
Find stores, track orders in real time, or connect location-based services.
Real-Time Chat
Direct communication between users, customers, and support within your own platform. No third-party dependency.
Social Integration
Login with Google/Apple/Facebook, content sharing, and organic virality integrated into every flow.
Enterprise Security
End-to-end encryption, biometric authentication (Face ID / fingerprint), and compliance with international standards.
Industries we serve
Apps we build for New York and Connecticut industries
From delivery to fintech, we design apps around the specific problems of each sector, and adapt the technology to your business model, not the other way around.
E-Commerce & Retail
Store apps, catalogs, cart, and in-app payments. Increase your average ticket by 40%.
Delivery & Logistics
Real-time tracking, status notifications, and optimized routes for your drivers.
Fintech & Banking
Payment apps, digital wallets, and investment platforms with banking-grade security.
Health & Wellness
Telemedicine, appointments, patient tracking, and wearable integrations.
Education & E-Learning
Offline courses, gamification, student progress, and class notifications.
Restaurants & Food
Digital menus, reservations, takeout orders, and loyalty programs.
Our Process
Our app development process: from idea to App Store
Agile methodology with full visibility, run over video calls and shared test builds. You participate in every decision.
Discovery & Strategy
Wk 1–2We understand your business model, analyze your competition, define target users, and map your app's key flows.
UX/UI Design
Wk 3–5Wireframes, interactive Figma prototypes, and a complete design system adapted to iOS and Android guidelines.
Agile Development
Wk 6–142-week sprints with Friday demos. You see progress in real time and prioritize features.
QA & Testing
Wk 15–16Automated + manual testing on real devices. Edge case coverage, performance, and security.
Publishing & ASO
Wk 17–18Upload to App Store and Google Play with listing optimization (ASO). Analytics and crash reporting setup.
Native App vs Mobile Website
Why choose an app over a website?
Tech Stack
Our app development tech stack
We use modern, open-source technologies backed by the world's largest communities. Your app will be built on solid, documented foundations with globally available talent.
React Native
One codebase, two platforms
TypeScript
Robust, maintainable code
Node.js
High-performance backend
Firebase
Push, auth & analytics
PostgreSQL
Scalable database
AWS / Vercel
Cloud infrastructure
Choosing your stack
Native vs Flutter vs React Native: which should you choose?
There's no single answer. We help you choose the right technology for your use case, budget and team. Here's the honest breakdown.
Native apps
Swift · Kotlin
Maximum performance and full access to operating-system APIs. Recommended for apps that lean on advanced hardware features.
Pros
- Maximum performance
- Full hardware access
- 100% native UI
Trade-offs
- Two codebases
- Higher investment
Ideal for: Camera, AR and health apps
Flutter
Dart · Google
A single codebase for iOS and Android with near-native performance and pixel-consistent custom UI.
Pros
- One codebase
- Consistent UI on every device
- Fast iteration with hot reload
Trade-offs
- Smaller hiring pool (Dart)
Ideal for: Ecommerce, fintech and SaaS apps
React Native
JavaScript · Meta
Native components written in JavaScript/TypeScript. Ideal when your team already uses React and wants to share logic with the web.
Pros
- Huge JavaScript ecosystem
- Reuse web code and skills
- Large developer community
Trade-offs
- Heavy animations need extra care
Ideal for: Content, community and B2B apps
Our Work
App projects from our portfolio
Every project is a custom solution. This is how we work for our clients.
Management dashboard with real-time metrics
Cross-platform design iOS and Android
Collaborative planning with the client
Success Stories
What our app development clients say
“Our app has 4.9 stars on the Play Store and has tripled our customers' purchase frequency. The investment paid for itself in 4 months.”
TMThiago Montenegro
CEO of food delivery, Greenwich
“The team delivered on time and on spec. The app works perfectly on iOS and Android. Our users love it and post-launch support has been excellent.”
SWSloane Whitmore
Director of fintech startup, New York
“Push notifications have been a game-changer. We recovered inactive customers at a 34% rate. Without a doubt the best tech investment of the year.”
LCLeandro Cifuentes
Founder of education platform
“We went from MVP to 50,000 users in 8 months with no performance drops. The architecture they designed handled everything.”
JPJimena Piedrahita
Co-founder of health app, Greenwich
“The team's technical level is exceptional. Clean architecture, zero tech debt, and an app that scales without issues.”
TRThaddeus Rowe
CTO of fintech platform
“The code they delivered is the quality you'd expect from a Silicon Valley company. Impressive.”
VEVaughn Ellery
VP of Product, regional logistics company
FAQ
Mobile app development FAQ: cost, timeline and platforms
Our mobile apps start at $8,000 USD. Features like payments, geolocation, real-time chat or integrations add scope, and we price the full build as a fixed quote after a free discovery call. When work is billed hourly, our rate is $95–$140 per hour.
A typical project takes between 14 and 18 weeks (3.5 to 4.5 months) from discovery to store publication. Simpler apps can be ready in 10 weeks.
Yes. We use React Native, which allows us to develop both platforms with a single codebase. This reduces costs and development time by 30–40% compared to separate native development.
It includes: discovery and strategy, UX/UI design in Figma, complete development, QA with real devices, App Store and Google Play publishing, ASO optimization, and 3 months of post-launch support.
Yes. We work with agile methodology with demos every 2 weeks. Plus, we give you access to testing builds so you can test the app on your own device throughout the process.
Yes. The first 3 months of support are included. After that, we offer monthly maintenance plans covering OS updates, bug fixes, performance improvements, and new features.
Yes. We integrate Stripe and PayPal for physical goods and services, and Apple's in-app purchases (StoreKit) and Google Play Billing for subscriptions and digital content, which the app stores require for digital goods.
No. We work fully remotely with clients in New York City, Connecticut and Westchester: discovery calls and sprint demos happen over video, and you test every build on your own phone through TestFlight and Google Play testing tracks.
Apps by industry
App development for your industry
Patient apps, client portals and booking flows have different rules in each industry. See what we build for yours.
- Real EstateListing sites and lead capture for agents and brokerages.
- Dental PracticesPractice websites with clear services and online booking.
- Medical PracticesPractice sites, patient portals and HIPAA-aligned apps.
- Financial AdvisorsCompliance-minded websites that build client trust.
- Med SpasTreatment pages and booking flows that fill your calendar.
Keep reading
Mobile app guides
Real budgets, timelines and hiring guidance for NY & CT.
Get a fixed-price quote for your app
In 30 minutes we define the scope, ideal technology, and exact budget for your mobile application. No commitments, no fine print: just a conversation that can transform your business.