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Alpine Apartment,New Milanpally,Ram Mandir Road,Siliguri Bazar,Darjeeling,WB -734005,SMC Ward No.-25
info@cronusgen.com    
+91 75014 15060 / +91 92420 54909
GSTIN: 19FQYPS9032R1Z7
Custom App Development | Cronusgen Technologies
Custom App Development

We Build Apps
That Scale &
Drive Growth

Not just functional β€” strategically engineered for performance, user delight, and business growth. Cross-platform, secure, and built to outperform the competition.

Explore Solutions
400+
Apps Delivered
98%
Client Satisfaction
6+
Years Experience
πŸ“±
Cross-Platform iOS Β· Android Β· Web
app.config.js
const app = { client: "Your Business", platform: "iOS + Android", performance: 99, secure: true, scalable: true, crossPlatform: true, onTime: true, // always };
πŸš€
Launch Ready App Store & Play Store
// About Our Service

We Don't Just Code Apps.
We Build Products.

Cronusgen Technologies is a full-cycle app development company that takes complete ownership of your project β€” from discovery and architecture to deployment and long-term maintenance.

Our team of expert developers, UI/UX designers, and product strategists work in sync to deliver robust, scalable, and secure digital products that grow with your business.

Custom Solutions
Scalable Architecture
Secure & Fast
Full Ownership
Ongoing Support

Why businesses choose us

400+

Apps Delivered

4+

Expert Developers

6+

Years Experience

6+

Industries Served

// What We Build //

App Solutions
For Every Need

From consumer apps to enterprise platforms β€” we engineer the right solution for your stage and goals.

πŸ“±

Mobile App Development

Native and cross-platform apps for iOS and Android β€” built for performance, speed, and user delight.

FlutterReact NativeSwift
🏒

Enterprise Applications

Large-scale applications that handle complex workflows, massive data, and multi-user environments.

ERPCRMPortals
☁️

SaaS Applications

Subscription-based cloud software with multi-tenancy, billing integration, and scalable infrastructure.

AWSFirebaseStripe
πŸ›’

E-Commerce Applications

Full-featured online stores with inventory management, payments, and rich shopping experiences.

ShopifyWooCommerceCustom
πŸš—

On-Demand Apps

Uber-style platforms with real-time tracking, two-sided marketplaces, and instant booking capabilities.

MapsReal-timePayments
⚑

Progressive Web Apps

App-like experiences on the web β€” offline capable, fast, installable, and fully SEO-friendly.

PWAOfflineInstallable
-/ Why Choose Us/-

Performance,
Delivered.

We're not just developers β€” we're growth partners who are invested in your success.

01

⚑ Fast Performance

Apps optimized for speed with lazy loading, caching strategies, and minimal render times that keep users engaged.

02

πŸ” Secure Development

Security-first approach with encryption, OWASP compliance, JWT auth, and regular security audits from day one.

03

πŸ“± Cross-Platform

One codebase, multiple platforms. We maximize your reach while minimizing your investment using Flutter & React Native.

04

🎨 Modern UI/UX

Intuitive interfaces designed with user behavior research, accessibility standards, and conversion optimization at the core.

05

☁️ Cloud Integration

AWS, Firebase, and Azure integrations for reliable infrastructure, auto-scaling, and global delivery with zero downtime.

06

πŸ”„ Scalable Architecture

Built to handle 100 or 1 million users without a rewrite β€” modular, microservices-ready code that grows with you.

πŸ€– Tech Stack πŸ€–

Modern tools, battle-tested frameworks, and best-in-class infrastructure for every app project.

βš›οΈ
React Native
Mobile
🍎
Swift
iOS Native
πŸ’™
Flutter
Mobile
β¬’
Node.js
Backend
🟒
Express.js
Backend
πŸ—„οΈ
MySQL
Database
πŸƒ
MongoDB
Database
πŸ”₯
Firebase
Database
☁️
AWS
Hosting
🌊
DigitalOcean
Hosting
πŸ”Œ
Payment Gateway
API
πŸ”‘
JWT
Authentication
How we work

Our Process

Clear steps, zero surprises β€” from first call to final launch.

πŸ”

Requirement Analysis

We deeply analyse your goals, target audience, and technical needs to define the exact scope before a single line is written.

01
02
πŸ“‹

Planning & Strategy

We send a detailed design concept, technical requirements, timeline, and transparent pricing β€” no hidden fees, ever.

🎨

UI/UX Design

Wireframes and interactive prototypes in Figma. We iterate on designs until the experience feels exactly right for your users.

03
04
πŸ’»

Development

After final design approval, we build β€” clean code, performance-optimised architecture, and security baked in from the start.

πŸ§ͺ

Testing & QA

Cross-device, cross-OS testing. Performance audits, security checks, and zero tolerance for bugs before we ship anything.

05
06
πŸ‘€

Client Review

We share the completed app for your final review. Your feedback is actioned swiftly and precisely β€” no arguments, no excuses.

πŸš€

Deployment

We handle App Store and Play Store submissions, server setup, and go-live β€” handing you full ownership with documentation.

07
08
πŸ”§

Maintenance & Growth

Post-launch, we remain your trusted partner for updates, feature additions, performance monitoring, and long-term support.

// Industries

Industries We Serve

Deep domain expertise across verticals that matter most to modern businesses.

πŸ₯

Healthcare

πŸ“š

Education

πŸ›’

E-Commerce

πŸ’°

Finance

🏠

Real Estate

✈️

Travel

πŸ”

Food & Delivery

🏭

Manufacturing

Built for Both Platforms

Whether your users are on iPhone or Android β€” we deliver a native-quality experience on both.

iOS Development

Crafting seamless, high-performance apps for iPhone and iPad using Swift and Flutter.

  • REACT NATIVE
  • iPhone & iPad support
  • App Store deployment
  • iOS design guidelines (HIG)
  • Push notifications & deep links
  • In-app purchases & subscriptions
Apple App Store Ready
⚑
We build for both

Android Development

Building robust, scalable apps for all Android devices using REACT NATIVE.

  • REACT NATIVE
  • All Android device sizes
  • Google Play deployment
  • Material Design 3
  • Push notifications & deep links
  • Google Pay & Play Billing
Google Play Store Ready

Need both platforms? We deliver a single codebase or native builds β€” your choice.

Choose Your Engagement

Project pricing based on tech stack and complexity β€” transparent, fair, and scope-driven.

πŸ“¦

Fixed Price

Ideal for projects with a clear scope. Priced based on your tech stack and project complexity.

  • Priced by stack & complexity
  • Fixed budget & delivery date
  • Detailed requirements upfront
  • Milestone-based payments
  • Perfect for MVPs & launch-ready apps

Trusted By Real Businesses

Don't take our word for it β€” hear from clients who've seen real results.

β˜…β˜…β˜…β˜…β˜…

"Cronusgen delivered our e-commerce app ahead of schedule and it performed brilliantly at launch. Communication was seamless and they truly felt like part of our team."

RK
Rahul Kapoor
CEO, ShopBridge India
β˜…β˜…β˜…β˜…β˜…

"The SaaS platform they built handles 10,000+ daily users without a hiccup. Their architecture decisions were spot-on and saved us significantly in cloud costs."

SM
Sarah Mitchell
CTO, EduPlatform UK
β˜…β˜…β˜…β˜…β˜…

"They didn't just write code β€” they challenged our assumptions and improved our product at every step. Our on-demand app is now top-rated in our region."

AN
Arjun Nair
Founder, QuickDeliver App

Frequently Asked

How much does custom app development cost?

The cost depends on complexity, platforms (iOS/Android/Web), and feature set. A simple MVP typically starts from $5,000–$15,000, while enterprise-grade apps range from $30,000 to $150,000+. We provide a detailed quote after a free discovery call β€” no obligations.

How long does it take to build an app?

An MVP can be delivered in 6–10 weeks. A full-featured app typically takes 3–6 months. We provide a detailed project timeline during the planning phase so you always know what to expect β€” and we stick to it.

Do you provide post-launch support and maintenance?

Absolutely. We offer flexible maintenance retainers covering bug fixes, OS updates, performance monitoring, and new feature development. We believe in long-term partnerships, not just one-time deliveries.

Will I own the source code and intellectual property?

Yes β€” 100%. You retain complete ownership of the source code, design files, and all intellectual property once the project is completed and final payment is received. We sign an NDA upfront.

Can you build both iOS and Android apps simultaneously?

Yes! Using cross-platform frameworks like Flutter and React Native, we build for both iOS and Android from a single codebase β€” saving up to 40% in time and cost while maintaining near-native performance.
πŸ˜€ Ready to Start?

Let's Build Your
Dream App 😎

Get a free consultation and quote within 24 hours. No commitment required.

Call Us Now
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