Web & Mobile Development
Mobile Application

Web & Mobile App Development

DevSimplex delivers high-performance web and mobile applications tailored to your business needs. Our expertise spans Progressive Web Apps (PWAs), cross-platform and native mobile apps, e-commerce platforms, and enterprise-grade web applications. We modernize legacy systems, ensure seamless user experiences across devices, and leverage the latest technologies like React, Next.js, Flutter, and Swift. Whether you're building an MVP, scaling an enterprise solution, or transforming an existing product, we ensure speed, security, and scalability.

120+
Success Rate
< 2s
Avg Delivery
3+
Case Studies
85%+
Retention

Our AI Solutions & Services

From conversational AI to complex machine learning models, we develop intelligent solutions that automate tasks, provide insights, and enhance decision-making.

Progressive Web Applications (PWA)

Web Development

Fast, reliable, and engaging web applications that work offline and provide native app-like experience across all devices.

Key Features:

  • Offline functionality and data sync
  • Push notifications
  • App-like user interface
  • Fast loading and performance
  • Cross-platform compatibility

Use Cases:

Offline-first AppsProgressive EnhancementApp-like ExperienceCross-platform

Technologies:

Next.jsReactService WorkersIndexedDBPWA

What You Get:

  • PWA application
  • Offline capabilities
  • Push notification system
  • App manifest
  • Service worker implementation
Starting from $8,0006-10 weeks

Cross-Platform Mobile Apps

Mobile Development

Native-quality mobile applications that run on both iOS and Android from a single codebase, reducing development cost and time.

Key Features:

  • Single codebase for iOS and Android
  • Native performance and UI
  • Device hardware access
  • App store deployment
  • Push notifications and analytics

Use Cases:

iOS & Android AppsCross-platform SolutionsMVP DevelopmentCost-effective Mobile

Technologies:

React NativeFlutterExpoFirebaseNative APIs

What You Get:

  • iOS application
  • Android application
  • App store submissions
  • Push notification setup
  • Analytics integration
Starting from $12,0008-12 weeks

E-commerce Web Platforms

E-commerce

Custom e-commerce solutions with shopping cart, payment processing, inventory management, and admin dashboard.

Key Features:

  • Custom shopping cart and checkout
  • Payment gateway integrations
  • Product catalog management
  • Order and inventory tracking
  • Customer accounts and profiles

Use Cases:

Online StoresMarketplacesB2C SalesSubscription Commerce

Technologies:

Next.jsStripePayPalMongoDBRedis

What You Get:

  • E-commerce platform
  • Payment integration
  • Admin dashboard
  • Inventory system
  • Customer portal
Starting from $15,00010-16 weeks

Enterprise Web Applications

Enterprise

Scalable web applications for enterprise operations with complex workflows, data management, and user hierarchies.

Key Features:

  • Complex workflow management
  • Role-based access control
  • Real-time collaboration
  • Advanced reporting and analytics
  • Third-party system integrations

Use Cases:

Business ApplicationsInternal ToolsWorkflow ManagementEnterprise Systems

Technologies:

ReactNode.jsPostgreSQLWebSocketDocker

What You Get:

  • Enterprise web application
  • Admin dashboard
  • User management system
  • Reporting tools
  • Integration APIs
Starting from $20,00012-20 weeks

Native Mobile Applications

Native Mobile

Platform-specific mobile apps for iOS and Android with maximum performance and access to all device features.

Key Features:

  • Platform-specific optimizations
  • Full device hardware access
  • Maximum performance
  • Native UI components
  • App store optimization

Use Cases:

Performance-critical AppsHardware IntegrationComplex FeaturesNative Experience

Technologies:

SwiftKotlinObjective-CJavaXcodeAndroid Studio

What You Get:

  • Native iOS app
  • Native Android app
  • App store optimization
  • Performance tuning
  • Device integration
Starting from $18,00010-16 weeks

Web Application Modernization

Modernization

Transform legacy web applications into modern, responsive, and performant solutions with updated technology stack.

Key Features:

  • Legacy system analysis
  • Modern UI/UX redesign
  • Performance optimization
  • Mobile responsiveness
  • Security enhancements

Use Cases:

Legacy MigrationTechnology UpgradeUI RefreshPerformance Improvement

Technologies:

Modern FrameworksAPI MigrationDatabase OptimizationCloud Deployment

What You Get:

  • Modernized application
  • New UI/UX design
  • Performance improvements
  • Mobile responsiveness
  • Updated documentation
Starting from $10,0008-14 weeks

AI & Automation Packages

Choose the right AI solution package for your business needs. All packages include strategy consulting, development, and ongoing support.

Web Application

$8,000
6-10 weeks

Modern responsive web application with professional design and core functionality

Small businesses, web presence, information sites

Package Includes:

Consultation
15h
Revisions
3
Support
3 months
Team Size
2-3 developers
  • Responsive web design
  • Up to 10 pages/screens
  • Contact forms and basic features
  • SEO optimization
  • 3 months support
  • Content management system
  • Analytics integration
  • SSL certificate
Most Popular

Mobile Application

$12,000
8-12 weeks

Cross-platform mobile app for iOS and Android with native performance

Startups, mobile-first businesses, app ideas

Package Includes:

Consultation
20h
Revisions
4
Support
6 months
Team Size
3-4 developers
  • iOS and Android apps
  • Up to 15 screens
  • Push notifications
  • App store deployment
  • 6 months support
  • Backend API integration
  • User authentication
  • Analytics and crash reporting

E-commerce Platform

$15,000
10-16 weeks

Complete e-commerce solution with payment processing and inventory management

Online retailers, product businesses, marketplaces

Package Includes:

Consultation
25h
Revisions
5
Support
6 months
Team Size
4-5 developers
  • Product catalog management
  • Shopping cart and checkout
  • Payment gateway integration
  • Order management system
  • Customer accounts
  • Admin dashboard
  • Inventory tracking
  • SEO and marketing tools

AI Success Stories Across Industries

See how AI automation is transforming businesses and delivering measurable ROI

FinTech

Challenge:

Secure mobile banking application with biometric authentication and real-time transactions

AI Solution:

React Native app with biometric APIs, real-time backend, and PCI DSS compliance

Benefits:

  • 500K+ downloads in 6 months
  • 4.8/5 app store rating
  • 99.9% transaction success rate
  • PCI DSS compliance achieved
400% ROI through digital banking adoption

E-commerce

Challenge:

Multi-vendor marketplace platform with advanced search and payment processing

AI Solution:

Next.js platform with Elasticsearch, Stripe integration, and vendor management

Benefits:

  • 1000+ vendors onboarded
  • $5M+ transaction volume
  • 40% increase in conversion rate
  • Mobile-first responsive design
350% ROI through increased sales

Healthcare

Challenge:

Patient management PWA with appointment booking and telemedicine capabilities

AI Solution:

Progressive web app with WebRTC, offline functionality, and HIPAA compliance

Benefits:

  • 50K+ patients registered
  • 95% patient satisfaction
  • HIPAA compliance certified
  • Offline functionality
500% ROI through improved patient engagement

Our Development Process

A systematic approach that ensures quality delivery, transparent communication, and successful project outcomes every time.

1

Research & Strategy

1-2 weeks

User research, market analysis, and strategic planning to define project requirements and success metrics.

Key Deliverables:

  • User persona development
  • Competitive analysis
  • Technical requirements gathering
  • Platform and technology selection
  • Project roadmap creation

Activities:

Stakeholder interviewsMarket researchUser researchTechnical planningRoadmap development
2

Design & Prototyping

2-4 weeks

UI/UX design, wireframing, and interactive prototyping to validate user experience before development.

Key Deliverables:

  • Wireframes and user flows
  • Visual design and branding
  • Interactive prototypes
  • Usability testing
  • Design system creation

Activities:

WireframingVisual designPrototypingUser testingDesign refinement
3

Development & Testing

6-16 weeks

Agile development with continuous testing, code reviews, and regular client feedback integration.

Key Deliverables:

  • Frontend and backend development
  • Database design and implementation
  • API development and integration
  • Quality assurance testing
  • Performance optimization

Activities:

Sprint developmentCode reviewsTesting and QABug fixingPerformance tuning
4

Launch & Optimization

1-2 weeks

App store submission, deployment, launch strategy, and post-launch optimization based on user feedback.

Key Deliverables:

  • App store submission and approval
  • Production deployment
  • Launch marketing support
  • User feedback collection
  • Performance monitoring setup

Activities:

Store submissionDeploymentLaunch supportMonitoring setupOptimization

Cutting-Edge AI Technology Stack

We leverage the latest AI technologies and frameworks to build robust, scalable, and production-ready artificial intelligence solutions.

Frontend Web

React
Modern UI library
Next.js
Full-stack framework
Vue.js
Progressive framework
TypeScript
Type-safe JavaScript
Tailwind CSS
Utility-first CSS
PWA
Progressive web apps

Mobile Development

React Native
Cross-platform mobile
Flutter
Google's UI toolkit
Swift
Native iOS
Kotlin
Modern Android
Expo
React Native platform
Firebase
Mobile backend

Backend & APIs

Node.js
JavaScript runtime
Python
Versatile backend
GraphQL
Query language
REST APIs
Web services
WebSocket
Real-time communication

Detailed AI Project Case Studies

In-depth look at successful AI implementations and their business impact

FinTech Mobile Banking App

SecureBank DigitalFinancial Services

Challenge:

Building secure mobile banking application with biometric authentication, real-time transactions, investment tracking, and bill payment capabilities

AI Solution:

Developed cross-platform mobile app using React Native with biometric APIs, real-time WebSocket connections, secure banking APIs, and PCI DSS compliance

  • Biometric authentication (Face ID, Touch ID)
  • Real-time transaction processing
  • Investment portfolio tracking
  • Bill payment and transfers
  • Push notifications for transactions
Timeline:
12 weeks
Investment:
$45,000

Results Achieved:

500K+ downloads within 6 months
4.8/5 average app store rating
99.9% transaction success rate
PCI DSS compliance achieved
40% increase in mobile banking adoption

Technologies Used:

React NativeNode.jsMongoDBBiometric APIsWebSocket

E-commerce Marketplace Platform

RetailMax SolutionsE-commerce

Challenge:

Creating multi-vendor e-commerce platform with advanced product search, payment processing, inventory management, and vendor analytics dashboard

AI Solution:

Built scalable Next.js platform with Elasticsearch for search, Stripe for payments, Redis for caching, and comprehensive vendor management system

  • Multi-vendor architecture
  • Advanced product search with filters
  • Stripe payment integration
  • Real-time inventory tracking
  • Vendor analytics dashboard
Timeline:
16 weeks
Investment:
$62,000

Results Achieved:

1000+ vendors successfully onboarded
$5M+ monthly transaction volume
40% increase in conversion rate
Mobile-first responsive design
Average 2-second page load time

Technologies Used:

Next.jsPostgreSQLStripeElasticsearchRedis

Healthcare Patient Portal PWA

MedCare Health NetworkHealthcare

Challenge:

Developing HIPAA-compliant patient management system with appointment booking, medical records access, telemedicine, and offline functionality

AI Solution:

Created Progressive Web Application with WebRTC for telemedicine, service workers for offline capability, and end-to-end encryption for data security

  • Appointment booking system
  • Electronic medical records access
  • Video telemedicine with WebRTC
  • Offline-first architecture
  • HIPAA compliance framework
Timeline:
14 weeks
Investment:
$55,000

Results Achieved:

50K+ patients registered
95% patient satisfaction score
HIPAA compliance certification
Full offline functionality
30% reduction in missed appointments

Technologies Used:

ReactPWAWebRTCNode.jsPostgreSQL

What Our Clients Say

Real feedback from businesses we've helped transform

"The mobile banking app exceeded our expectations. The biometric authentication is seamless and our customers love the intuitive interface. Downloads surpassed 500K in just 6 months."
Michael Thompson
Head of Digital Banking
SecureBank Digital
Mobile Banking App
"Our e-commerce marketplace has transformed our business. The platform handles thousands of vendors and millions in transactions flawlessly. Best investment we've made."
Jennifer Martinez
CEO
RetailMax Solutions
E-commerce Marketplace
"The patient portal PWA has revolutionized how we interact with patients. The offline functionality and telemedicine features are game-changers for rural healthcare."
Dr. Sarah Ahmed
Chief Medical Officer
MedCare Health Network
Healthcare Patient Portal
Expert Knowledge Base

Frequently
Asked Questions

Get expert answers to common questions about our enterprise software development services, process, and pricing.

500+
Questions Answered
99.8%
Client Satisfaction
< 2hrs
Response Time
Web apps run in browsers and are accessible across all devices, while mobile apps are installed on smartphones/tablets. Mobile apps can access device features like camera, GPS, and push notifications. We can also build Progressive Web Apps (PWAs) that combine the best of both worlds.
Yes, we develop for both platforms. We typically use cross-platform technologies like React Native or Flutter to build apps that work on both iOS and Android from a single codebase, which is more cost-effective. We also offer native development when platform-specific features are required.
Development time varies based on complexity. Simple apps take 8-12 weeks, while complex apps with advanced features can take 16-24 weeks. We provide detailed timelines during planning and use agile methodology to deliver working versions incrementally.
Absolutely! We handle the entire app store submission process for both Apple App Store and Google Play Store. This includes preparing app assets, writing descriptions, ensuring compliance with store guidelines, and managing the review process.
Yes, we offer comprehensive maintenance packages including bug fixes, security updates, OS compatibility updates, and feature enhancements. We also provide analytics monitoring and performance optimization as part of our support services.

Still Have Questions?

Our senior technical consultants are standing by to provide personalized answers and help you make the right decision for your enterprise software project.

Free 30-min consultation
No obligation quote
Same-day response

Ready to Get Started?

Let's discuss how we can help transform your business with web & mobile development.