Application development services

Application development services

Your full-cycle application development provider

Our application development services cover web, mobile and cloud apps delivery to enterprises and SMBs. We are well-equipped to build custom applications from scratch or on top of leading tech platforms, and perform necessary integration, configuration, testing, and employee onboarding to ensure the apps operate as intended.


registered users of the wellness apps Itransition built for a New York health tech company.


cost reduction driven by our custom cloud-based BPM application for a UK care homes agency.


customer growth thanks to our SAP-based deposit processing application for a UK tenancy deposit protection provider.

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Custom application development vs off-the-shelf software

Custom applications

Off-the-shelf applications

Feature set
Feature set

The functionality is defined by the project requirements and can be as robust as needed.

The functionality is defined by the application’s vendor.


The owner can modify and expand their application as they see fit through custom development.

The owner can configure the app within the scope of default settings.


Application maintenance is performed by the owner’s in-house team or third-party maintenance service providers.

Maintenance services are typically provided by the vendor, often for an additional fee.


A custom app owner can choose to implement the protection mechanisms relevant to the threat landscape.

Off-the-shelf applications have a fixed set of security features which can only be extended by the vendor.


Custom applications are developed from scratch, so the timeline from ideation to delivery takes at least several months.

As soon as the application is installed and set up, it’s ready for use.

Custom application types

We build applications that run on web servers and can be accessed through a browser. Web applications are a broad category of solutions, encompassing web portals, PWAs, CMSs, ERPs, and other tools.

Tech stack

Custom web applications are developed using programming languages, the most popular choice being JavaScript, Java, PHP, Python, and C++. In the meantime, there are many dedicated platforms, such as Magento, SAP, Drupal, Salesforce, and more, that a company can base their web application on and configure to align with their specific business workflows.

Programming languages

  • Java
  • PHP
  • R
  • C
  • Python
  • Kotlin
  • C#
  • JavaScript
  • Go
  • C++
  • Ruby
  • SQL


  • Microsoft
  • Atlassian
  • UiPath
  • Salesforce
  • Pega
  • Adobe
  • SAP Commerce
  • Odoo

Use cases

Web applications are widely used across industries to digitize both back-office operations and customer-facing services.

Web apps for customers:
  • B2B and B2C portals
  • Patient portals
  • Learning portals, and more
Web apps for employees:
  • Digital workplace platforms
  • Business process management tools
  • HR management platforms
  • Enterprise content management apps, and more

We offer to develop applications for iOS or Android mobile operating systems, platform-agnostic apps that work across mobile devices, and hybrid solutions combining elements of native mobile and web applications.

Tech stack

Mobile applications are built using programming languages appropriate to the solution’s type and target devices and operating platforms.


  • Swift
  • Java
  • C
  • Objective-C
  • Kotlin


  • Sencha
  • React Native
  • Adobe PhoneGap
  • Xamarin


  • React
  • HTML5
  • Cordova

Use cases

Mobile applications have become essential engagement and productivity tools in retail, banking, entertainment, healthcare, and other sectors.

Mobile apps for consumers:
  • Fitness apps
  • Mobile banking
  • Retail apps
  • Media streaming services, and more
Mobile apps for employees:
  • Workforce management apps
  • Mobile ERPs
  • Mobile collaboration hubs, and more

We deliver cloud-based applications based on the software-as-a-service model that allows owners to license these solutions on a subscription basis to their customers.

Tech stack

SaaS applications are built using common programming languages such as Python, PHP, React, JavaScript, and others. Apart from this, companies need to select a cloud service platform to host their SaaS app.

Programming languages

  • JavaScript
  • Python
  • PHP
  • React
  • Ruby on Rails

Cloud platforms

  • Microsoft Azure
  • Google Cloud
  • Rackspace
  • AWS
  • Apprenda

Use cases

The SaaS distribution model is widely applied to build general-purpose enterprise applications as well as industry-specific tools for B2B and B2C businesses.

  • Project management apps
  • CRM systems
  • Document management platforms
  • Email services
  • Ecommerce platforms
  • EHRs
  • Supply chain management tools, and more

Have an application project in mind?

Itransition will bring it to life

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Common app architecture patterns

Monolithic architecture

We can design one-piece, single-tiered monolithic applications that are self-contained, with their components interconnected and interdependent. Such applications have high throughput performance but prove challenging to update and change, which makes the architecture the best choice for small and lightweight apps.

Microservices architecture

We can build applications composed of independent and loosely coupled services communicating with each other through APIs. A go-to approach to cloud software development, microservices guarantee high application flexibility, scalability, and fault tolerance and are a great fit for any robust application or legacy software refactoring.

Innovation-oriented technologies to integrate

Innovation-oriented technologies to integrate

Connecting enterprise IoT devices and equipment with back-office applications, a company can capitalize on real-time data collection as well as remote process monitoring and management.

Tooled up with immersive technologies, applications can drive personalized and exciting customer experiences, provide a real-world training environment, and make complex workflows more accessible.

The integration of AI solutions into applications can help achieve various goals, from business process automation and customer experience personalization to fraud detection and risk management.

Applying data science solutions to their apps, owners can turn large sets of customer and business data into structured insights and make the right decisions to achieve their business goals.

Equipped with an intelligent image, video or face recognition engine, an application can contribute to improved security, production line efficiency, visual data analysis accuracy, and more.

Implemented in an application ridden with manual workflows like data management, user support, or infrastructure monitoring, RPA bots can automate and expedite them, significantly reducing operational costs.

Integrated with big data processing and visualization solutions, applications can transform raw data into accurate and easy-to-interpret insights that companies can rely on in their decision-making.

Application development cost factors

Application size

The larger the application is intended, the more time and resources it takes to develop it. Large applications also require more server space and maintenance work, and can incur higher monthly fees.

Tech stack

Choosing programming languages with many reusable components and libraries will simplify and expedite application development, eventually lowering its cost, while employing technologies lacking necessary prewritten elements will take more time and effort.

Feature set

When it comes to custom applications, the more features they have, the higher the development costs. In the case of PaaS-based apps, adding custom features to the out-of-the-box set is another development cost driver.


Creating an application’s UX/UI using ready-made templates is less expensive than having specialists develop a unique design fully aligned with your brand identity and target users’ preferences. Adding creative visual elements like animation or video to the user interface can also drive costs up.


Integrating applications with third-party software using APIs is a simple task for software engineers, but in case there are no ready-made connectors, then custom integration development can add up more costs.

Team composition

The types of specialists involved in the project, their number, and qualifications they possess are all major cost factors in the application development.

Our application development framework



We assess your app requirements and define the tech stack



We create the project’s roadmap and plan sprints


UX/UI design

Our designers create your app’s look and feel



We develop your application’s source code



We check the app for bugs and defects through all-round QA



We launch the application and transfer ownership

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More application services

Application migration

Application migration

We offer to move your application to a new cloud or on-premise environment and complete the necessary pre- and post-migration modifications to ensure the app’s proper functioning.

Application modernization

We can bring your legacy application up to speed by revamping its architecture, making it more lightweight through containerization, adding new features, or redesigning its UX/UI.

Application security

We help mitigate your application’s vulnerabilities and make it impregnable to security threats by reinforcing the solution with relevant protection mechanisms.

Application testing

We perform an all-round quality assurance of your application or focus on its specific aspects by providing standalone testing services.

Application maintenance

Our maintenance team will proactively monitor your application and timely address its needs and shortages through fixing bugs, updates, and feature set modifications.

Our application development services: FAQs

How long does it take to develop a custom application?

A custom application can take between three to twelve months to build, with the timeline depending on the solution’s scale and complexity.

What project management approaches do you follow?

We adhere to the Agile development methodology and work in iterations to release new features and introduce changes swiftly.

Can you rescue my app development project?

Yes, we can join at any stage of your project and, after a detailed product and documentation analysis, take your project to the completion stage.

How do you ensure application security?

We follow security-by-design principles, making sure to equip applications with the most suitable and effective security mechanisms.

What common issues can come up during app development?

App development projects can be riddled with issues like unclear requirements, poorly chosen development tools, unexpected costs, and delays. We take steps before the project start and during the development to mitigate them.

How do you ensure your applications are compliant with data privacy regulations?

We implement relevant data privacy controls and security measures in addition to compliance testing to align apps with regulations such as HIPAA, GDPR and more.

Tenancy management software

Case study

Tenancy management software

Find out how Itransition developed a tenancy deposit replacement application for Hamilton Fraser, a UK insurance provider.

An AR app for interacting with celebrities

Case study

An AR app for interacting with celebrities

Learn how Itransition helped to develop an AR app for interacting with celebrities for iOS and Android.

A remote patient monitoring and mobile telehealth suite

Case study

A remote patient monitoring and mobile telehealth suite

Learn how Itransition developed a remote patient monitoring and telehealth platform for sexual assault victims for a US research center.

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