Skip to main content
Anthrasec

We design and build web, mobile and internal applications around the people who use them, engineered for reliability and security from the first line of code, and supported long after launch.

  • Designed around your users
  • Secure by design
  • Supported after launch
Talk to us about your project →See our approach
A product team with laptops listening to a colleague in a planning meeting

84%

of developers now use or plan to use AI tools in their work (Stack Overflow, 2025)

The basics

What is application development?

Application development is the process of designing, building, testing and running software that solves a specific problem for your customers or your teams.

A monitor showing source code in a code editor

Off-the-shelf software is a great fit for common needs such as email, accounting or payroll. But when the way you serve customers or run operations is what sets you apart, generic tools often force you to work around them, with spreadsheets, manual workarounds and systems that don't talk to each other. Custom application development, sometimes called bespoke software development, builds the tool around your process instead: a customer portal, a mobile app, a booking or quoting system, or an internal platform that brings your data and workflows into one place.

Modern application development is far more than writing code. It starts with understanding users and the outcome you need, then moves through user experience (UX) design, architecture, development, automated testing, secure deployment and ongoing support. Teams work in short, iterative cycles so you see working software early and can change direction as you learn, and practices such as continuous integration and delivery (CI/CD) mean updates reach users quickly and safely. Done well, the result is software that is easy to use, secure, scalable in the cloud and straightforward to maintain for years, rather than a project that becomes tomorrow's legacy problem.

  1. A

    Great design

    Research-led user experience that makes the right thing easy, tested with real users before a line of production code is written.

    Example: Customers can book and pay in three taps instead of a phone call.

  2. +

    Solid engineering

    Clean architecture, automated tests and secure, repeatable deployments that keep software reliable as it grows.

    Example: Every change is tested automatically and released without downtime.

  3. =

    Software that lasts

    Applications people enjoy using, that your business can change quickly and safely, and that stay secure for years.

    Example: New features ship every fortnight, and nothing breaks at month end.

How software is changing

AI is reshaping how software gets built

AI coding assistants have gone mainstream in just a few years. They speed up routine work, but developers are clear that experienced engineers still need to check what they produce.

  • 84%

    of developers use or plan to use AI tools in their development process, up from 76% a year earlier

  • 51%

    of professional developers use AI tools every day

  • 46%

    of developers actively distrust the accuracy of AI tools' output

  • 33%

    of developers trust the accuracy of AI output, and only 3% highly trust it

AI tools are now part of everyday development

The share of developers using or planning to use AI tools has risen every year since the question was first asked. Used well, alongside code review and automated testing, they help teams deliver more in less time.

Share of developers using or planning to use AI tools in their development process

Source: Stack Overflow Developer Survey 2023–2025, AI

YearShare
202370%
202476%
202584%

What we build

Applications for customers, teams and systems

From a first product to replacing a system your business depends on, we build software that fits the job.

  • Web applications

    Fast, accessible web apps and platforms that work beautifully on every screen size and browser.

  • Mobile apps

    iOS and Android apps, native or cross-platform, with offline support and secure sign-in.

  • Customer portals

    Self-service portals where customers can order, book, track, pay and get support around the clock.

  • Internal tools

    Workflow, approval and reporting tools that replace spreadsheets and manual processes.

  • APIs and integrations

    Secure, well-documented APIs that connect your CRM, finance, ERP and third-party services.

  • Legacy modernisation

    Ageing systems rebuilt or re-platformed in stages, without disrupting the business that relies on them.

What's included

Everything it takes to ship great software

One team covers the whole lifecycle, so nothing falls between design, development, security and support.

Wireframes for an application open on a laptop screen
  • React
  • Next.js
  • Vue.js
  • Angular
  • Svelte
  • TypeScript
  • Node.js
  • Python
  • .NET
  • Go
  • Kotlin
  • Swift
  • Flutter
  • Django
  • FastAPI
  • PostgreSQL
  • MongoDB
  • Redis
  • GraphQL
  • Docker
  • Kubernetes
  • GitHub Actions
  • GitLab
  • Terraform
  • Figma
  • Jest
  • Cypress
  • Postman
  • Stripe

Technologies

Modern, proven technology

We choose mainstream, well-supported technology your team can hire for and maintain, not the latest fashion. Where you have existing standards, we work within them.

Product names and logos are trademarks of their respective owners and are shown to illustrate the technologies available. Their use does not imply endorsement or partnership.

The benefits

What well-built software brings to your organisation

  • Fits how you work

    Software shaped around your processes, not the other way round.

  • Happier customers

    Faster, simpler experiences that keep customers coming back.

  • Time back for teams

    Manual steps, re-keying and spreadsheets automated away.

  • Reliable and secure

    Tested, monitored software that protects your data and reputation.

  • Ready to grow

    Cloud architecture that scales with demand without a rebuild.

  • You own it

    Your code, your data and full documentation, with no lock-in.

Developers use AI more, but trust it less

Favourable views of AI tools have fallen as developers see their limits in practice. That's why we pair AI assistance with experienced engineers, code review and automated tests.

Share of developers favourable or very favourable towards AI tools for development

Source: Stack Overflow Developer Survey 2025, AI

YearShare
202377%
202472%
202560%

Standards and good practice

Built to recognised standards

Quality, security and accessibility are designed in from the start, following established guidance rather than house rules.

  • OWASP Top 10 and ASVS

    Industry guidance for preventing the most common and serious web application vulnerabilities.

  • NCSC secure development

    The National Cyber Security Centre's principles for developing and deploying software securely.

  • WCAG 2.2 AA

    Accessibility guidelines so your application works for everyone, including people using assistive technology.

  • UK GDPR privacy by design

    Data protection considered at every stage, from what we collect to how long we keep it.

  • GOV.UK Service Standard

    For public sector services, the government's standard for building services that meet user needs.

  • Cyber Essentials

    The UK Government-backed security baseline, supported by how we host and maintain your software.

  • Twelve-factor apps

    Proven principles for building cloud applications that are portable, scalable and easy to operate.

  • ISO/IEC 25010

    The international model for software quality: reliability, performance, security and maintainability.

A team collaborating around a whiteboard in a sunlit office

The business perspective

What leaders ask before investing in software

Software is a significant investment. These are the questions we help you answer before, during and after the build.

  • Build or buy?

    Is there a product that does the job well enough, or will custom software give us an edge?

  • What will it cost to run?

    Beyond the build: hosting, support, licences and the cost of change over the years.

  • How do we reduce risk?

    Small releases, early feedback and clear milestones rather than a single big launch.

  • Who owns it?

    Code, data, documentation and knowledge stay with you, so you're never locked in.

Getting started

How to start a software project well

A designer sketching app wireframes with a pen on paper
  1. 1

    Define the outcome

    Agree the problem, the users and how you'll measure success before choosing features.

  2. 2

    Talk to users

    Research and prototypes reveal what people actually need, early and cheaply.

  3. 3

    Start small

    Launch a minimum viable product with the features that matter most, then build on it.

  4. 4

    Build quality in

    Automated tests, security checks and code review from the first sprint, not the last.

  5. 5

    Plan for life after launch

    Monitoring, support and a roadmap, so the software keeps improving.

Our approach

How we deliver software

We work in short, transparent cycles with your people involved throughout, so you see progress every couple of weeks and can steer as you learn.

Mobile app screen designs displayed on a large desktop monitor
  1. 01

    Discover

    Understand your users, goals, systems and constraints, and agree what success looks like.

    You get: A clear scope, roadmap and estimate

  2. 02

    Design

    Prototype and test the experience, and design an architecture that's secure and scalable.

    You get: Tested designs and a technical plan

  3. 03

    Build

    Develop in short sprints with automated testing, code review and regular demos.

    You get: Working software every sprint

  4. 04

    Launch

    Release safely with monitoring in place, supported by our team through go-live.

    You get: A smooth, low-risk launch

  5. 05

    Evolve

    Support, maintain and improve the application as your users and business change.

    You get: Software that keeps getting better

Why Anthrasec

Why choose Anthrasec to build your software

  • Security built in

    We come from cybersecurity, so secure design and testing are part of every build.

  • Engineers who own the outcome

    Senior engineers who care about how the software performs in production.

  • Transparent delivery

    Regular demos, clear reporting and no surprises on scope or cost.

  • Cloud and infrastructure included

    Hosting, networks and security from the same team, with no gaps between suppliers.

  • No lock-in

    You own the code and documentation, and we build with mainstream technology.

  • With you after launch

    We support, maintain and improve what we build.

A development team working together at a long table with laptops

Common questions

Application development, answered

How much does custom software development cost?

It depends on the scope, the number of integrations and how complex the business rules are. Smaller applications and prototypes can be delivered in weeks, while larger platforms are built in phases. After a short discovery, we give you a clear estimate and break the work into stages so you can control spend.

How long does it take to build an application?

A focused minimum viable product often takes 8 to 16 weeks. Because we release in short cycles, you'll see working software within the first few weeks and can start getting value before everything is finished.

Should we build custom software or buy an off-the-shelf product?

If a product does the job well and your process is standard, buying is usually quicker and cheaper. Custom software makes sense when your process is a differentiator, when you need to connect several systems, or when off-the-shelf tools force costly workarounds. We'll give you an honest recommendation.

Do we own the code?

Yes. You own the source code, designs and documentation we create for you, and everything is kept in repositories you control.

Can you modernise our existing legacy system?

Yes. We assess the system, then modernise it in stages, for example by moving it to the cloud, replacing it piece by piece or rebuilding the most valuable parts first, so the business keeps running throughout.

Do you use AI to write code?

Our engineers use AI assistants where they help, for example with routine code and tests, but every change is reviewed by an experienced engineer and checked by automated tests and security scanning. We never share your confidential code or data with AI tools without agreement.

What happens after the application launches?

We offer ongoing support covering monitoring, security updates, bug fixes and new features, with agreed response times. Software needs regular care to stay secure and useful, and we're set up to provide it.

Work with us

Ready to work with Anthrasec?

Let's schedule a meeting.

Pick a time that suits you and tell us a little about what you need. We'll come prepared, with the right people in the room.

Step 1 of 4

Choose a date and time

October 2026

Checking availability…

Times are shown in UK time (London). Meetings are held on Microsoft Teams.

Available times

Choose a date to see available times.