Mobile app development company in New York City

DOOR3 provides mobile solutions to extend your reach and build your customer base.

When it comes to mobile software and app development, we’ve got you covered — from the end-to-end architecture to beautifully designed mobile experiences built on sound business strategies. DOOR3 is a New-York based mobile app development company that builds custom apps for startups & enterprises looking to boost business performance and productivity.

With mobile devices and apps everywhere, how do you stay competitive and ensure that your products will stand out in a crowded marketplace? If your business hasn’t already expanded into the mobile sector, you’re potentially missing out on vital market opportunities. Increasingly, users expect to access your products from any location and on any device. And with more digital professionals working remotely, your software needs to be accessible and functional across a wide range of platforms. Partner with a software agency that has the extensive knowledge and expertise in mobile development to put your products into users’ hands.

DOOR3 has created award-winning mobile experiences for many of our clients, and we’re ready to guide you through strategy and development that sets your brand apart. We can help you expand your mobile presence and maintain brand coherence with a seamless user experience across devices.

Our broad technology base and extensive experience means that we have the tools to build complex iOS and Android mobile applications that are integrated with your entire system. We can develop your full technology stack, from the end-to-end architecture and core engineering to the business logic and data connections that make your mobile experience reliable, long-lasting, and scalable.

Our mobile application development capabilities

  • Xamarin

    We use this mobile language maintained by Microsoft to develop native-performing apps that can span Android, iOS, and Windows on a single shared .NET codebase that is optimized for performance.

  • Ionic

    We rely on this open-source framework to create scalable cross-platform hybrid mobile apps built on common web technologies that can unify your back-end and front-end on the same JavaScript platform.

  • Objective C

    This central mobile programming language defines Apple’s iOS API and is crucial to developing native applications for iPhone and iPad.

  • Java

    This mobile language maintained by Oracle is based on a Linux kernel and is the standard for any native Android app development project.

  • Swift

    Another language for building native iOS apps, Swift is a growing open-source language that also offers support for Linux and other Apple platforms.

  • React Native

    Maintained by Facebook and built on a JavaScript base, this React-based language allows for faster loading times in apps built for iOS and Android.

  • Angular NativeScript

    An open-source language for building iOS and Android apps on the Angular framework, offering native performance across platforms with an extensive library of plugins and third-party libraries.

We're a leading mobile app development company in New York that builds cutting-edge mobile solutions

  • We Consider the Context

    Mobile devices are everywhere today. Whether you expect your users to be scrolling from their couch, on the train, or on a job site, we consider the real-world context and build the experience that’s right for the environment.

  • Execute on a Technical Level

    We don’t just plug into an API and call it a day — we back up our design and experience strategy expertise with hard-core tech execution to create end-to-end solutions that work with your existing systems.

  • The Tools to Succeed

    We design and build mobile apps and other device-ready solutions to help you expand your business and reach your customers wherever they are.

Mobile application development trends

  • Shifting Mobile Development Best Practices

    When planning a mobile strategy for your business, is a native app, web-based, or hybrid approach the ideal strategic solution? We offer mobile app development services that stay current with native and web-based mobile frameworks such as Angular NativeScript and React Native to ensure the optimal approach for your business now and into the future.

  • Virtual and Augmented Reality

    Mobile devices are essential to augmented reality development and a wave of headsets have made them central to virtual reality as well. Emerging technologies like these require innovative capabilities and design thinking to create smart applications. Our mobile app development work is grounded in experience design and practical use cases to make sure AR, VR, and other new mobile-centric technologies aren’t just a flash in the pan.

'DOOR3 has been FreshDirect's partner in mobile development for many years. Their tailored, pragmatic and highly engaged approach means that we are constantly working together to grow and enhance the FreshDirect offering and ensure our customers have the best experience possible.'

Jodi Kahn,
Chief Consumer Officer,

DOOR3 is a Leading Mobile Application Development Company - New York | Request a FREE Quote