IntervioAI
Our own AI mock interview app on Android and iOS. Users practise HR, technical and managerial rounds by voice, get a score and see what to improve.
See IntervioAI
We plan, design, build and launch mobile apps, web apps and business software for startups and growing companies. Clear scope, a fixed quote for the first version, weekly demos and support after launch, from our team in Greater Noida.
Engineer Codewala works with businesses that need more than a basic app vendor. We plan the product, design the customer journey, build the mobile app and web dashboard, connect backend APIs, and support launch after the first release goes live.
We work with startups and teams across the city, in Greater Noida and in the rest of Delhi NCR. Many projects start with a simple requirement: a booking app, ecommerce app, service marketplace, delivery workflow, CRM-connected mobile app or internal operations tool. We turn that into screens, milestones, architecture and a release plan your team can understand.
When businesses compare app development companies, the important questions are usually cost, timeline, technology and post-launch ownership. We answer those early. Depending on the product, we use React Native, Flutter, native Android/iOS, React, Node.js, Firebase and cloud services to create apps that are maintainable after launch.
Native Kotlin or cross-platform Android apps with Play Store release and support.
Learn moreiPhone apps built to App Store guidelines, with TestFlight builds and review support.
Learn moreOne codebase for Android and iOS that shares logic with your React web dashboard.
Learn moreCross-platform apps with custom UI and a consistent look on both stores.
Learn moreBusiness websites, customer portals and dashboards in React and Next.js.
Learn moreNode.js APIs, databases, payments, notifications and the admin panel your team uses daily.
Learn moreMost projects we take on here are mobile-first: a customer app on Android and iOS, backed by a web dashboard and admin panel. We build ecommerce apps, classified and marketplace apps, booking apps, delivery apps, healthcare apps, edtech products, internal staff apps and startup MVPs. Every app starts with user flows and release priorities before we write production code.
We pick the stack for your product, not the other way round. React Native or Flutter give you one shared codebase for Android and iOS and a faster launch; native Android (Kotlin) or iOS (Swift) make sense when you need heavy device features or maximum performance. Behind the app we build the backend APIs, authentication, payments, maps, chat, push notifications and analytics, then handle testing and the Play Store and App Store release.
The goal is not only to publish an app. It is to ship something your customers use easily and your team can manage after launch: clean architecture, readable admin controls, tested builds, and a maintenance plan when new features are needed. If your business is closer to our office, our page on mobile app development in Greater Noida covers the same work with a local focus.
Our own AI mock interview app on Android and iOS. Users practise HR, technical and managerial rounds by voice, get a score and see what to improve.
See IntervioAIMarketplace, classified, service booking, e-commerce, job portal and visa apps.
View case studiesWe understand your users, must-have features, budget and launch date. You can meet us at the office, or we come to you for the kickoff.
You get a feature list, screens, milestones and a fixed quote for the first version, so the budget does not change halfway.
Key screens are designed and shared as a clickable prototype you can try on your own phone before development starts.
App, backend and admin panel are built in short sprints. You see a working build every week and have one point of contact.
Testing on real devices, then release on the Play Store and App Store under your own accounts. You own the code.
Bug fixes, OS updates and new features on a simple monthly plan.
Cost depends on the number of user roles, platforms (Android, iOS or both), the backend and admin panel, integrations like payments and maps, and how custom the design is. A focused MVP costs much less than a full marketplace. After a short call we share a fixed quote for the first version.
For typical price ranges, read our app development cost guide for 2026.
4th Floor, K B Complex, Sector Alpha II. Usually a 30–50 minute drive from most sectors via the Expressway, depending on traffic.
Choose us if you want a product-focused team that handles strategy, UI/UX, app development, backend APIs, admin panels, testing and launch support with clear communication.
Cost depends on features, platforms, integrations and admin requirements. A focused MVP usually costs less than a full marketplace or enterprise workflow, so we share a practical range after discovery.
Yes. We build Android, iOS and cross-platform apps using React Native or Flutter when one shared codebase is the right fit.
Yes. Most app projects include backend APIs, authentication, payments, notifications, dashboards, reports and admin controls.
We work with businesses across Sector 62, 63, 18, 16, the Sector 125–137 corridor and Noida Extension, as well as Greater Noida and the rest of Delhi NCR.
Yes. You can visit our office in Sector Alpha II, Greater Noida, or we can come to your office for the kickoff meeting. Most day-to-day work then runs over calls, WhatsApp and weekly demos.
It depends on performance needs, budget, timeline and product complexity. We recommend the stack after reviewing your users, features and long-term roadmap.
Yes. We handle testing, release builds, store assets, the submission flow and launch checks for Android and iOS apps.
Yes. We can audit an existing app, improve the UX, rebuild unstable modules, modernise the backend and plan a phased migration.
A focused MVP can often be planned and launched in 6 to 12 weeks. Larger products need more time for design, development, testing and phased release.
Share your idea on a call, on WhatsApp or at our office. We reply with a scope and a fixed quote.