Mobile App Development Company in Kolkata
You have an app idea, an existing app that needs improvement, or a Complex business process that you'd like to automate with a mobile app development company in Kolkata? With 16+ years of experience, Unika Infocom Pvt. Ltd helps 100+ startups and businesses turn ideas into reliable, user-friendly mobile applications - from Android and iOS apps to scalable cross-platform solutions. Analyze and develop apps for business processes, with long-term support and full source code ownership.
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Explore Our Apps in Live Motion
Swipe, hover, or click any application to watch the full-screen interactive preview. Built for startups and enterprises with high performance architecture.
A Trusted Mobile App Development Company
in Kolkata
Unika Infocom Pvt. Ltd. (CIN: U72900WB2016PTC218755), Registered Office: 151 DumDum Road in Kolkata. We've been developing mobile apps since 2010. We are learning every day with new architecture trending technologies, adopting newer architectures and technologies to applying the best pricticies on our projects. Make the app reliable updated and secure. Along the way we've delivered 100+ Android, iOS, and Flutter apps for clients in retail, healthcare, manufacturer, logistics, and fintech, including companies like Senco Gold, HashFame, Emami, APML, Gymella, FameFinder, and Fulmeds.
We analyze your requirements by assigning a dedicated Project Manager (Technical Single Point of Contact) to work closely with your team and explore every possible aspect of your project. We document the requirements at a micro level and prepare a detailed Software Requirements Specification (SRS) before development begins. Our team provides quick responses and same-day technical solutions whenever possible, helping make the project more efficient and aligned with your business requirements.
Built Around Your Business Goals
Before any coding starts, we begin with a discovery session to understand how you actually make money, who your users are, and who you're up against. That conversation shapes everything that follows.
Kotlin, Swift, Flutter & React Native
We choose whichever stack suits your project, not whichever is cheapest for us to build. Our developers have delivered real, live apps in all four.
OWASP-Compliant Security by Default
AES-256 encryption, biometric login through Keychain and Keystore, certificate pinning, and OWASP Mobile Top 10 compliance come standard on every build we deliver, not as a paid extra.
Post-Launch Support You Can Count On
Once your app is live, you'll still have a support window for OS updates, bug fixes and store policy changes, and a project manager you can actually call by name.
Senior Engineers, Not Junior Freelancers
Our core team averages eight-plus years on mobile projects. The founder and our lead iOS and Android engineers personally review every single build before it goes out.
Weekly Builds, Daily Check-ins
You'll have access to a live project tracker, get a fresh demo build every week, and can drop a question on WhatsApp any working day instead of waiting on a status email.
Worldwide
Unika Infocom Pvt. Ltd.
Building apps for Kolkata businesses since 2010.
Apps We've Actually Built. Real Results.
Apps we've designed, built and delivered - for real clients in retail, healthcare, logistics, community and travel. Every project shown here is live on the Play Store or App Store.
Vijaywargiya App
A full-featured community platform with a digital family directory, matrimonial matchmaking & business networking built in.
Directory
Matrimony
Business
Fulmeds Health App
High-speed medicine search platform with 343K+ drugs via Typesense, prescription upload & order tracking.
Utshav Fashion App
Ethnic & bridal shopping app with role-based collections (Bride, Groom), live stock & Razorpay checkout.
Carnival Trips App
High-performance travel booking app with destination discovery, offline PWA itinerary, flight & hotel engine.
Mera Pathshala App
Student admissions app with college shortlisting, common application forms, live counselling & scholarships.
APML Move Tracker
Enterprise logistics tracking app with instant relocation quote calculator, GPS live tracking & ERP sync.
Why Businesses Choose Unika Infocom
Here's what actually sets us apart from other app agencies in Kolkata, and why more than 150 businesses have returned to us for repeat projects.
Custom App Development
We don't start from a template, we start from how your business actually works. If a screen or an API doesn't map to a real user need or a real business outcome, it doesn't make the cut.
- Scalable Architecture
- IP Ownership Included
Android & iOS Expertise
Our Android developers hold Google certifications, and our iOS team has delivered apps across 10+ different App Store categories. You're hiring specialists here, not a generalist team.
- Native Performance
- Platform Guidelines
- App Store Certified
Flutter & React Native Experts
We reach for Flutter or React Native when they're the right fit, and we'll tell you straight up when native development makes more sense instead, even if that's not what you expected to hear.
- Single Codebase
- Faster Development
- Cost Efficient
Scalable & Secure Architecture
Every backend we build runs on containerised microservices on AWS or GCP with AES-256 encryption, and it's actually tested against the OWASP Mobile Top 10, not just ticked off a checklist.
- Data Security
- High Availability
- Scalable Infrastructure
Business-Focused UX Design
Good design isn't just about looking nice. We design screens that people actually want to keep using, because that's what turns into repeat customers and real growth for you.
- User-Centered Design
- Intuitive Interfaces
- Higher Engagement
Post-Launch Support
Launching the app isn't the finish line for us. We stick around to keep it secure, patched, and running well as OS versions and store rules keep changing.
- 24/7 Support
- Bug Fixes & Updates
- Performance Monitoring
Mobile App Development Services
We Offer
We're a Kolkata-based app development company, and we handle the whole journey ourselves, from the first Figma wireframe right through to submitting your app on the Play Store and App Store. Here's everything we build in-house.
Android App Development
We build in Kotlin and Jetpack Compose, with offline storage through Room DB and networking handled by Coroutines. Google Play compliance is sorted from day one, not patched in later.
Learn MoreiOS App Development
Native Swift and SwiftUI builds for iPhone and iPad, with Apple Pay, Keychain-backed biometric security, and animations smooth enough to pass App Store review on the first submission.
Learn MoreFlutter App Development
One codebase, built on Flutter's modern rendering engine, gets you iOS and Android at the same time. That can cut your time-to-market by up to 40% compared to building two separate native apps.
Learn MoreReact Native Development
We build on React Native's latest architecture with TypeScript, so you get performance close to native without the overhead of maintaining two codebases.
Learn MoreNative App Development
Full access to low-level device APIs - Bluetooth BLE, camera pipelines, GPS telemetry and sensors - for apps that need hardware-level capabilities.
Learn MoreCross-Platform Development
Shared business logic and unified API layers, with automated CI/CD for both app stores, so one team maintains a single codebase instead of two.
Learn MoreHybrid App Development
Capacitor/Cordova-wrapped web apps for businesses that want a mobile presence without a full native build. Quicker to launch, and easy to update afterward.
Learn MoreEnterprise Mobile Applications
SAP/Salesforce ERP sync, SAML/SSO authentication and MDM-compatible apps built for large workforces where security compliance is non-negotiable.
Learn MoreStartup MVP (Minimum Viable Product) Development
6-to-10 week MVP builds that focus on core user value first. Payment gateway, analytics and onboarding come included, so you can validate the idea before spending more.
Learn MoreCustom Business Applications
Mobile products engineered around your specific workflows, including custom AI models and real-time backend microservices, with complete IP ownership handed over on delivery.
Learn MoreAndroid, iOS & Cross-Platform Development
Not sure which platform is right for your project? We build Android, iOS and cross-platform apps in Kolkata and will recommend what's best for your users, not what's easiest for us.
Android Development
Native Android apps that are quick, secure, and feel right at home on every device they run on.
- Kotlin & Java
- Android SDK
- Material Design 3
- Google Play Store
- Firebase Integration
- Wide Device Compatibility
iOS Development
High-quality iOS apps built with Swift for iPhone and iPad with exceptional performance and Apple ecosystem integration.
- Swift
- iOS SDK
- Human Interface Guidelines
- Apple App Store
- Xcode Development
- iPhone & iPad Optimized
Cross-Platform Development
Build once, deploy everywhere. Cross-platform apps that save time and cost while delivering great performance.
- Flutter
- React Native
- Single Codebase
- Faster Development
- Cost Effective
- Consistent UI/UX
| Aspect | Android (Native) | iOS (Native) | Cross-Platform |
|---|---|---|---|
| Best For | Large user base, device-level features | Premium users, high revenue apps | MVPs, startups, cost & time savings |
| Language | Kotlin, Java | Swift | Dart (Flutter), JavaScript (React Native) |
| Performance | |||
| Development Time | Longer | Longer | Faster |
| Cost | Higher | Higher | Lower |
| UI/UX | Highly Customizable | Premium & Native | Consistent & Customizable |
| Maintenance | Separate Codebase | Separate Codebase | Single Codebase |
| App Store | Google Play Store | Apple App Store | Both Stores |
| Device Access | Full Access to Device Features | Full Access to Device Features | Most Features via Plugins/Modules |
Enterprise Technologies Powering Exceptional Mobile Apps
We build iOS, Android and cross-platform apps that run at 60-120 FPS, backed by microservices, fast in-memory databases, and cloud infrastructure that scales up automatically when traffic spikes.
Butter-smooth rendering, asynchronous UI threads, sub-16ms frame times, and zero UI stutter across devices.
- Hardware-accelerated transitions
- Smart asset compression & lazy loading
- Instant gesture & haptic feedback
Hardened security layers protecting client data in transit and at rest adhering strictly to global standards.
- End-to-end AES-256 payload encryption
- Biometric Keychain / Keystore storage
- OWASP Mobile Top 10 compliance
Microservices architecture designed to effortlessly scale from MVP to 10M+ concurrent active users.
- Containerized Docker & Kubernetes clusters
- Global CDN & in-memory caching
- 99.99% high-availability SLA
Clean, modular MVVM or Clean Architecture code, handed over with proper documentation and no vendor lock-in.
- Full Git repository handover
- Complete API & architecture documentation
- Commercial IP rights transfer
Hire App Developer in Kolkata
Need extra hands on your app? We've got pre-vetted mobile app and backend developers in Kolkata ready to join your team, hourly, part-time or full-time, with no setup hassle and quick onboarding.
Hire Android App Developer
Hire seasoned Android engineers specialized in modern Kotlin, Jetpack Compose, and offline-first reactive architectures for smooth Google Play Store launches.
Hire iOS Developer
Build high-end, secure iPhone and iPad applications with experienced Swift & SwiftUI specialists adhering strictly to Apple's Human Interface Guidelines.
Hire AI App Developer
Integrate generative AI, smart conversational agents, predictive machine learning models, and custom LLMs directly into your mobile and web apps.
Hire Flutter Developer
Build native-speed, single-codebase iOS & Android apps at reduced cost with expert Dart and Flutter architects delivering silky 60fps animations.
Hire React Native Developer
You get a JavaScript and TypeScript-based app that shares one codebase across iOS, Android and web, without compromising on performance.
Hire Python App Developer
We build async REST APIs, data pipelines that can handle real load, and AI-backed services using proven Python frameworks that are reliable in production.
Hire Node JS App Developer
Architect scalable, event-driven backends, live chat servers, GPS live-tracking feeds, and low-latency microservices with high concurrent capacity.
Hire Laravel App Developer
Develop secure enterprise backend portals, CRM architectures, multi-tenant SaaS dashboards, and automated payment workflows with Laravel 11.
Hire CodeIgniter App Developer
Construct super-fast, lightweight PHP backends, legacy system migrations, and custom database management portals with zero footprint overhead.
Hire Windows App Developer
We build Windows desktop software, retail POS systems, hardware integration tools, and cross-device apps using .NET MAUI and C# that are built for daily business use.
Hire Game Developer
Develop immersive 2D/3D cross-platform games, interactive metaverse experiences, real-time physics simulations, and AAA gameplay mechanics with Unity & Unreal Engine.
Hire Mobile Game Developer
Build hyper-casual, RPG, puzzle, and real-time multiplayer mobile games engineered for silky 60fps performance, battery efficiency, and in-app monetization.
Powerful Features We Build Into Mobile Applications
Below are the features we build into most mobile apps - each one is a real capability we've delivered in production, not a line item on a brochure.
Authentication
OTP, Google/Apple Sign-In, and hardware biometric authentication - all stored securely in Keychain (iOS) or Keystore (Android).
- OTP Login
- Biometric Authentication
AI Integration
On-device ML Kit models, Gemini API integrations, smart search and predictive personalisation built directly into the app.
Payment Gateway
Razorpay, Stripe, UPI dynamic QR, Apple Pay, Google Pay and PayPal - with auto-recurring subscription billing built in.
Push Notifications
FCM & APNs rich push with deep-link routing, scheduled delivery and per-user preference controls.
Cloud Sync
Firebase Firestore real-time sync with offline-first Room DB caching - data available even without a connection.
GPS & Location
Google Maps SDK, MapBox, live GPS tracking with route polylines and geofencing alerts.
Analytics & Reports
Firebase Analytics, Mixpanel and custom event funnels with Looker Studio dashboards your team can read.
Chat & Messaging
In-app chat for better communication
Admin Dashboard
Complete control with admin dashboard
Video Calling
WebRTC-based low-latency peer-to-peer and group video calls with screen-share support.
CRM & ERP Integration
REST & webhook connectors for Salesforce, HubSpot, SAP and custom ERPs - bidirectional, not read-only.
Booking System
Easy reservations & scheduling
E-commerce
Complete shopping & order management
Multi-language
Support for multiple languages
Dark Mode
Beautiful dark & light mode
Offline Mode
Work offline, sync later
Role-Based Access
Secure access control
From Idea to Launch – We Build It All
Here's exactly what happens from the day you contact us to the day your app goes live on the stores - and what you get at each stage.
Typical timeline: 8–16 weeks from brief to store submission
Idea & Discovery
A free 45-minute call with our senior architect to map your users, revenue model, and competitive landscape. You leave with a tech recommendation and a rough budget range.
- Market Research
- Competitor Analysis
- Requirement Gathering
Planning & Strategy
Our designer produces low-fidelity wireframes in Figma, the solution architect selects the right technology, and you get a milestone-based project plan with week-by-week deliverables.
- Wireframing & Prototyping
- Tech Stack Selection
- Project Roadmap
UI/UX Design
High-fidelity Figma screens, an interactive clickable prototype and a Material 3 / iOS HIG-compliant design system you can review and approve before we write a single line of code.
- User-Centered Design
- Interactive Prototype
- Design System
Development
Two-week development cycles in Kotlin, Swift, Dart or TypeScript. You get a working demo build every Friday, a live project tracker, and a WhatsApp channel for quick questions.
- Clean & Optimized Code
- Agile Development
- Regular Updates
Testing & Quality Assurance
Manual regression plus automated test suites (Espresso, XCTest, Detox). Every release is also checked against current Play Store and App Store guidelines before submission.
- Functional Testing
- Performance Testing
- Security Testing
Deployment
We manage Play Console and App Store Connect submissions, handle review responses, configure AWS/GCP infrastructure, and get your app live - usually within 3–5 business days.
- App Store Deployment
- Cloud Deployment
- Release Management
Support & Growth
Post-launch warranty window for OS updates and bug fixes. After that, monthly retainers cover performance monitoring, new feature sprints and store policy updates.
- Maintenance & Updates
- Performance Monitoring
- Feature Enhancements
Why Our Process
Makes a Difference
This is how we've built strong, lasting client relationships since 2010 - no surprises, no scope creep, just predictable delivery.
Goal-Oriented
Every development cycle ends with a demo and a decision: change course or continue. You control the roadmap.
Transparent
You see builds every week. No black box development where you wait 3 months and hope for the best.
Flexible & Adaptive
Scope changed mid-project? We've handled it. We adjust priorities rather than hit you with a costly change order for every small change.
Quality First
OWASP Mobile Top 10 testing, automated regression suites, and Play Store & App Store pre-submission compliance checks on every single build.
From a Hostel Room to 100+ Projects
16+ years building software in Kolkata - the milestones behind the "since 2010" claim, not just the number.
Founded in a hostel room
Started with two college friends and two programmers. Our first client was Mr. San Pather and his son Mr. Tyran Pather, from South Africa - we're still connected today. Began with custom CRM, ERP, MLM and website development.
First Android & iOS app development
Built our first Antivirus Software Engine and expanded into Windows Application Development, Android App Development, iOS App Development, custom eCommerce, national/international SEO, SMO and payment gateway integrations.
Incorporated (CIN: U72900WB2016PTC218755)
Became a registered Private Limited company. With a growing team, we expanded into custom CRM, ERP, manufacturing, inventory and business management solutions across industries.
Formalized our QA process
Achieved ISO 9001 certification, formalizing the same structured QA and development process - including app testing standards - that every build still runs through today.
Added React.js & Next.js
Extended our core technology stack to build faster, scalable, modern applications - the same backend foundation our Android, iOS and Flutter apps connect to today.
Crossed 100+ completed projects
Serving clients across Kolkata, India and 12+ countries worldwide - spanning web, mobile, CRM, ERP and enterprise platforms.
Still growing, same Kolkata office
Still based at 151, DumDum Road, Kolkata - same core team, focused on long-term relationships, innovative technology and quality builds.
Meet the Experienced Team Behind Unika Infocom
When you hire our app developers in Kolkata, you know exactly who's working on your project. Every build is led by named, certified engineers, not a rotating outsourcing pool.
Sourav D.
Builds in Swift and SwiftUI and has taken apps live across 10+ industries. Cares a lot about getting performance, offline caching and accessibility right, not just launching something that works.
Apple Dev Program 8+ yrs iOSAmit K.
Works across Kotlin and Flutter, and spends most of his time on reactive UI, background sync and keeping enterprise apps compliant with Google Play Store policy.
Google Certified 7+ yrs AndroidPriyanka M.
Runs our automated QA process and Agile sprint cycles, which is why releases go out properly tested, properly documented, and on the date we promised.
ISTQB Certified PMP TrainedUnika Infocom Pvt. Ltd. is a registered private limited company (CIN: U72900WB2016PTC218755) headquartered in Kolkata, West Bengal, operating since 2010. Our leadership and senior engineers are named above and available for a consultation call before you commit to any project - speak directly with the team that will actually build your app.
Real Projects, Real Results
A sample of apps we've delivered and the measurable impact they had - full case studies and references available on request.
Carnival Trips - Travel & Tour Booking App
Peak festive rush required high-throughput real-time hotel, flight and package booking engine.
Built a high-performance cross-platform mobile app with Razorpay integration and instant ticket generation.
Fulmeds - Online Pharmacy & Medicine Search
Needed a fast medicine search across a huge catalogue, with prescription verification handled properly.
Built a Typesense-powered search across 343K+ medicines, with prescription upload reviewed by certified pharmacists before dispatch.
Utsav Fashion - Ethnic & Bridal Wear App
Needed live stock visibility across bridal collections plus a checkout that could handle festive-season traffic.
Built a role-based shopping experience (Bride, Groom) on Razorpay, with real-time stock sync from the warehouse.
Working With Businesses Across Kolkata's Tech & Business Hubs
Our main development office is in Dum Dum, and we regularly meet clients across Kolkata's business districts for on-site consultations, agile project delivery, and quick technical support when you need it.
Salt Lake (Sector V)
Custom enterprise mobile solutions, ERP mobile synchronization, React Native and Flutter apps for IT firms, tech consultancies & enterprises.
New Town / Rajarhat
Rapid MVP creation, native iOS/Android development, AI-integrated mobile applications, and scalable microservices for high-growth startups.
Park Street & CBD
High-security fintech, retail shopping apps, legal & corporate portals, and hospitality booking engines for established businesses around Park Street and the CBD.
Dum Dum & North Kolkata
Our main development center at 151 DumDum Road. Developing high-performance logistics, medicine delivery apps, and regional D2C brands.
South Kolkata
Designer fashion e-commerce apps, healthcare booking, lifestyle apps, and education management platforms for South Kolkata businesses.
Howrah & Shibpur
B2B marketplace apps, warehouse inventory tracking, real-time GPS consignment trackers, and ERP-integrated supply chain mobile systems.
Jadavpur & Garia
University student apps, diagnostic test booking platforms, e-learning solutions, and residential hyperlocal service delivery applications.
Behala & Alipore
Mobile distribution CRM, field sales rep tracking, on-demand hyperlocal delivery apps, and retail inventory management solutions.
Mobile App Development Plans & Pricing
These are rough starting prices for the app project types we build most often. Think of them as a reference point, not a final invoice, we'll firm things up after a quick call about your requirements.
A clean, focused mobile MVP for a startup testing market fit.
- Single platform (Android or iOS)
- Custom Figma UI/UX prototyping
- User authentication & OTP login
- Razorpay / UPI payment gateway
- Google Play or App Store setup
- 30 days free bug-fix support
For growing businesses that need custom workflows and high user retention.
- Dual platform (iOS & Android via Flutter/RN)
- Custom REST API backend & database
- Push notifications & live chat integration
- Web admin dashboard & analytics CRM
- Social logins & role-based access
- 60 days post-launch warranty
High-load, multi-vendor or complex custom mobile applications.
- Native Swift/Kotlin or high-scale Flutter
- Cloud microservices (AWS/GCP) architecture
- Live GPS tracking & consignment routing
- Advanced multi-vendor payment split
- OWASP Mobile security & encryption
- 3 months free dedicated support
Enterprise ERP mobile sync, custom AI models, or large-scale ecosystem.
- Fully custom architecture & tech stack
- Dedicated engineering team & Scrum master
- On-premise or hybrid cloud deployment
- Scoped & quoted after consultation call
- Ongoing enterprise SLA & 24/7 monitoring
Prices vary based on feature complexity, platform requirements, and third-party APIs. Every project is backed by our strict NDA & guaranteed store approval.
Why Kolkata Businesses Choose Unika Infocom
See how our engineering standards compare against freelance marketplaces and typical dev agencies.
| Key Capability & Guarantee | Unika Infocom | Freelancers | Generic Agencies |
|---|---|---|---|
| 100% IP & Source Code Ownership Complete copyright and source code handed over upon milestone completion. | Guaranteed Contract | Often Unclear | Additional Fees |
| App Store & Play Store Approval Guarantee Compliance with Apple HIG and Google Play policy standards. | 100% Approval Guarantee | No Guarantee | Extra Charge |
| Strict Confidentiality (NDA First) Mutual non-disclosure signed before discussing proprietary concept. | Signed Day 1 | Rarely Legally Bound | Available |
| Dedicated Kolkata Project Manager Single point of contact for daily updates and on-site visits. | Included with PM Board | None | Shared Support |
| Post-Launch Warranty & SLA Support Included bug fixing and OS compatibility updates after live deployment. | 30–90 Days Free SLA | Billable Hourly | Paid Retainer |
| 16+ Years Track Record & Registered Entity Verified physical office and corporate CIN registration in Kolkata. | Since 2010 (CIN Verified) | High Attrition Risk | Varies |
What Our Clients Say
Feedback from businesses we've partnered with - verified reviews from Google, Fiverr, Clutch and GoodFirms.
"We needed something fast and reliable for our business, and Unika delivered. They cleaned up our whole user flow, and ever since launch we've had steady orders coming in every single day. Worth the investment."
"We launched right before the festive travel rush and the app handled all our online bookings without any issues. The pace of development exceeded our expectations, and it's been running smoothly since day one."
"I needed a team I could actually rely on for our clinic's app. Patients keep telling us how simple it is to book consultations and track appointments through it. Very satisfied with the delivery."
Certifications & Industry Recognition
Independently verified ratings and accreditations.
Trusted by teams at
Bosch Emami Shyam Steel Space Group MaytagFrequently Asked Questions
Answers from our team about process, cost and timelines - ask us anything we haven't covered here.
It really depends on the platform you pick, how many features you need, and what it has to integrate with. A simple MVP will cost a lot less than a full enterprise app with lots of moving parts. Book a free consultation call with us and we'll send over an itemized quote, with no obligation.
A tight, focused MVP usually takes 8 to 14 weeks from kickoff to app store submission. Bigger enterprise builds naturally take longer. Either way, you'll get a realistic timeline with clear milestones before we start, plus a live project board so you can see where things stand.
Yes. We're happy to sign an NDA before any detailed discussion so your idea, data and business plans stay protected.
You do. Full source code, design files and IP ownership transfer to you on final payment, as outlined in our contract.
Yes. Every project includes a post-launch support window, and we offer ongoing maintenance retainers for bug fixes, OS updates and new features after that.
Yes, we regularly work with clients across the US, UK, Australia and the Middle East, with overlapping-hours calls and async project updates.
We build native apps in Swift for iOS and Kotlin for Android, and go cross-platform with Flutter or React Native when that fits your budget and requirements better. We'll recommend whichever option makes the most sense for your project instead of pushing whatever's cheapest for us.
We stick to OWASP Mobile security practices, encrypt sensitive data both in transit and at rest, and check every build against the current App Store and Play Store guidelines before we submit it, which cuts down the chances of getting rejected.
Let's Talk About Your Project
Fill out the form and we'll get back to you the same working day. Prefer to talk first? Give us a call or message us on WhatsApp, someone from the team will pick up.
Share a few details and we'll get back to you with a free estimation and technical roadmap - usually within 2 hours.