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Flutter · React Native · Enterprise
World-Class Mobile Applications
Flutter and React Native to build apps that scale from MVP to millions of users. Enterprise architecture, native performance, and delivery in weeks, not months.
Flutter Certified React Native Expert OWASP Compliant ISO 27001 Ready
9:41
App Store
4.9
Google Play
4.8
1M+
active users
iOS + Android
One codebase
100%
Native performance
4
Weeks to MVP
4+
Years of experience
Complete guide · Mobile apps USA
What is mobile app development and why does your business need one?
Mobile app development is the process of creating software that runs on smartphones and tablets — both iOS and Android. It spans from mass-consumer apps to enterprise tools that automate critical field operations, sales, or logistics.
"88% of the time users spend on mobile is inside apps, not in the browser. A custom app is the most direct channel to your customers."
in the USA, companies across all industries — logistics, healthcare, retail, fintech — are discovering that having a custom mobile app is the difference between being a digital company or just having social media. A well-built app increases customer retention by 60% compared to the mobile web.
Direct channel with push notifications (90% open rate vs email 20%)
Offline functionality: work without internet in the field
Access to camera, GPS, biometrics, and device sensors
Greater loyalty and session time than the web version
+60%
customer retention
iOS+Android
single codebase
Tech stack
The best tools for every project
We don't use the same technology for everything. We choose the optimal stack based on your business requirements, timeline, and budget.
Flutter
Google
High-performance native UI for iOS and Android from a single codebase. Hot reload, guaranteed 60 FPS.
Best for: Ideal for apps with rich UI and complex animations
React Native
Meta
Native JS components, maximum flexibility, and the complete npm ecosystem to integrate any library.
Best for: Ideal for teams with React web experience
TypeScript
Microsoft
Static typing that eliminates production errors and drastically improves code maintainability.
Best for: Quality standard across all our code
Firebase / Supabase
BaaS
Backend as a Service: authentication, real-time database, storage, and serverless functions.
Best for: Reduces development time by 40%
Technical capabilities
Software engineering, not just "code"
Every technical decision directly impacts the business: user retention, iteration speed, and long-term maintenance costs.
Native Performance
Guaranteed 60 FPS. Smooth animations and instant response on any device, from budget to flagship.
Scalable Architecture
Clean Architecture, MVVM/BLoC. Code that supports from 100 to 10 million users without major refactoring.
Enterprise Security
OWASP Mobile Top 10, local AES-256 encryption, certificate pinning, and multi-factor authentication from day 1.
Automated CI/CD
Continuous delivery pipelines with GitHub Actions, Fastlane, and automatic distribution to TestFlight and Play Console.
Exhaustive Testing
Unit tests, widget tests, e2e integration tests. Minimum 80% coverage before every production release.
OTA Updates
Critical fixes without store review thanks to CodePush/Shorebird. Response time in hours.
8–24 weeks
From concept to App Store
Our process
From idea to the stores, no surprises
5 proven phases that eliminate uncertainty. You always know what's next and get functional demos every 2 weeks.
01
Discovery & Strategy
We map the business problem, target users, app flows, and success KPIs. We deliver a technical specification document.
02
UX/UI Design
Interactive wireframes, design system, and high-fidelity prototypes in Figma. Your app looks perfect before writing code.
03
Sprint-by-Sprint Development
2-week sprints with functional demos. You review and approve each delivery. The final result never surprises you.
04
Testing & QA
Manual testing on real devices (iOS and Android), automated regression tests, and performance analysis with profiling.
05
App Store Launch
We publish to App Store and Google Play, set up production analytics, and deliver the complete source code.
Development types
Native, Flutter, or React Native?
There's no single answer. We help you choose the right technology based on your use case, budget, and team. Here's the honest breakdown.
Native Apps
Swift · Kotlin
Maximum performance and full access to OS APIs. Recommended for apps with advanced hardware features.
Maximum performance
Full hardware access
100% native UI
Two codebases
Higher investment
Ideal: Camera, AR, health apps
⭐ Most recommended
Flutter Cross-Platform
Dart · Google
A single codebase for iOS, Android, and web. Near-native performance with high-quality custom widgets.
One code for everything
Consistent UI
Hot reload
Dart less widespread
Ideal: E-commerce, fintech, SaaS
React Native
JavaScript · Meta
Native components with JavaScript. Ideal for teams already familiar with React who want to share logic with the web.
Huge JS ecosystem
Reuse web code
Large community
Bridge can be slow
Ideal: Content apps, social networks
Why NixMar Studio?
We're not freelancers. We're an engineering team.
Clean code, not spaghetti
We apply SOLID, DRY, and Clean Architecture principles. The code is readable, testable, and maintainable by any developer on your team.
Business KPIs from day 1
We instrument business analytics (retention, DAU/MAU, conversion funnel) from the first version so you make data-driven decisions.
Speed without sacrificing quality
2-week sprints with functional demos. We deliver value from the first sprint, not at the end of a 6-month project.
Investment models
Choose the right model for your stage
Real prices for iOS + Android apps in the USA. No hidden costs, with a detailed technical proposal before you commit.
Mobile MVP
Idea to stores in record time to validate your market.
8–12 weeks
iOS + Android app
Authentication & profiles
5–8 core screens
Basic backend included
Store publishing
30 days support
From $8,000
USD · Free quote
⭐ Most popular
Digital Product
Complete application ready to scale with solid architecture.
16–24 weeks
Everything in MVP +
Advanced push notifications
Integrated in-app payments
Analytics & dashboards
Web admin panel
CI/CD configured
60 days support
From $18,000
USD · Free quote
Enterprise
Mission-critical solutions for companies that demand the best.
Custom
Everything in Digital Product +
Microservices architecture
High availability (99.99%)
Enterprise security (SOC 2)
ERP/CRM integration
SLA with guaranteed uptime
Continuous priority support
Contact us
USD · Free quote
Success stories
Apps already in production
American companies that trusted us to build their mobile applications.
“The team's technical level is exceptional. Clean architecture, zero tech debt, and an app that scales without issues.”
0 tech debt
Eng. Ricardo A.
Eng. Ricardo A.
CTO of fintech platform, USA
“We went from MVP to 50,000 users in 8 months with no performance drops. The architecture they designed handled everything.”
50K users / 8 months
Laura V.
Laura V.
Co-founder of health app, Greenwich
“The code they delivered is the quality you'd expect from a Silicon Valley company. Impressive.”
World-class quality
Diego C.
Diego C.
VP of Product, regional logistics company
Frequently asked questions
Everything about mobile app development
We answer the most common questions about costs, technologies, timelines, and the process of building a professional mobile app in the USA.
