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.NET Application Development Services

For decades, Microsoft .NET has worked successfully in the business world and proved its convenience and reliability. First, it allows building a wide variety of apps suitable for any device and any platform type. Secondly, owned by a big-name company, it inspires confidence in getting corresponding high-level quality. In addition, .NET carries with it:


With the strong support of Microsoft technologies, our team delivers fast, scalable, and reliable .NET-based web, mobile, IoT, big data, and AI applications of high complexity. Our developers can complement them with trending Azure cloud solutions, ensure engaging, highly interactive JavaScript SPA user experience and easy integration through an enterprise service bus.

Web applications

Discover our cross-platform, cross-browser, high-performance, and cloud-ready web applications based on ASP.NET Core and JavaScript/HTML5.

Mobile applications

Enjoy spotless UX of quality mobile apps built with Xamarin.Forms tools and libraries that run natively on any platform – be it Windows, Android or iOS – and synchronize easily with multiple wearable technologies (Android Wear, Apple Watch, etc.).

Mobile application back end

Supplement your mobile front end with a reliable .NET back end to ensure the smooth, fast, secure, and scalable work of an application and enable its future integration with third parties (e. g. web apps). Additionally, the use of Azure Mobile Services can bring to your app fast and sufficient cloud storage, built-in authentication to Microsoft, Google, Facebook, and Twitter, and support of push notifications.

IoT applications

Leverage processing of streaming data and immediate response delivery with rich .NET real-time functionality, such as Azure IoT Hub/Edge and SignaIR asynchronous server-client communication.

Big data applications

Deliver sophisticated services and make truly informed decisions with .NET big data solutions. The platform allows appealing to the powers of such Azure Big Data components as petabyte-size, cloud-based, and massively scalable Azure Data Lake Store and Azure Data Lake Analytics. We may optionally complement them with HDInsight clusters set up and configured with core proven Big Data technologies – Hadoop and Spark. Add a wide-spread and trusted SQL Server suite – and here’s a ready full-blown stack of tools for a big data challenge at hand.

AI applications

Enhance your future application with artificial intelligence features, such as image-processing, speech recognition, intelligent search, lead scoring, sentiment analysis, intent analysis, brand representation monitoring, and more with rich possibilities of Azure Machine Learning and Cognitive Services.

All-round development

A Qrapp's team of a PM, BAs, architects, developers, and testers will complete every step of the application development process (Discovery & Analysis, Development, and Testing), provide a comprehensive solution and back it up with maintenance and round-the-clock support. We also eagerly cooperate with your BAs and testers to ensure that you get continuous feedback.

We offer the most suitable price models depending on the type of cooperation you choose. T&M price model goes with the complex Agile projects that have both a flexible scope and dynamic requirements, while Fixed Price is intended for Waterfall projects with a defined scale and clear expectations.

One-time consulting

We provide immediate recommendations on the most advantageous solutions to your technical problems: advise on the right technology mix, identify the system’s bottlenecks, provide an optimal scalability map, etc. Our solid expertise in 10+ domains, such as healthcare, manufacturing, banking, retail, etc., will help you get the best value from the next IT investments, improve work efficiency, and increase customer satisfaction.

With a flexible T&M contract, we easily modify the scope of our work and you pay just for what you need.

Migration to .NET

We ensure a smooth migration of your legacy application to help you benefit from the innovative .NET gains.


We choose the architecture that will perfectly suit the needs of your future application:

Multitier architecture

When it comes to application development, simplicity is the soul of wit. Thus, we choose traditional architecture for mid-sized applications to ensure their fast development, easy testing and maintenance.

Cloud-native architecture

Given our experience with Microsoft Cloud Services, we can build your application tailored to Microsoft Azure Cloud Services and specialized API. As a result, you’ll get a modern advanced app with maximal scalability and availability and benefit from significantly reduced operational costs.


We keep our code short and clean…

We diligently follow the coding standards and naming conventions, provide comprehensive current code documentation, and carry out consistent code reviews to write it once and keep it simple, loose-coupled, balanced, readable, and clean.

…because it does matter

Respectively, you get seamless team scaling in case of need, faster bug detection, stable application work, undemanding maintenance, and easier future updates.

See us in action!

We’d love to stay in touch. Describe the digital challenge you’ve faced, and we’ll get back to you with a solution we can offer.