Web App Development Agency

Web apps that make life easier for your users. From customer portals to SaaS products, we focus on clear journeys, thoughtful design, and brand experiences that are unmistakably you.

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Full-stack web app development

What Is Web App Development?

Web applications sit between websites and full software platforms; they’re powerful tools accessed through browsers that solve real workflow and user problems. Our approach combines thoughtful UX with scalable architecture to maximise usability and growth.

Customer portals
Internal dashboards
SaaS platforms
Workflow automation tools
Booking and scheduling
Transactional applications
Custom CMS Development
API & Systems Integration

Powerful, Scalable Web Apps

Well-designed apps are easy to use. We prioritise clarity, predictability, and intuitive journeys for users across devices.

We build tailored applications that reflect your unique business logic and user needs — not off-the-shelf templates or repurposed code.

Security and performance are foundational. We choose technologies and patterns that reduce risk, support growth, and keep users engaged.

We have been working with Yellow Peach for over a year, and over that period they have become a trusted partner for our business and technology stack. They always take the time to explore the best solutions for the problems and challenges that we bring them before agreeing a path forward in a collaborative manner. Thank you!

Ed Maughan

Managing Director @ Group Accommodation

Working with Anji and the team on our new website has been such a pleasure. Their endless patience and helpful guidance has been incredibly helpful for a first timer, building a brand new business! Thank you.

Alice Hayes

Director @ WorkRoom

We worked with Yellow Peach to build our Floresco website, and we’ve been delighted with the results. They’ve totally brought our brand to life, with a fresh, engaging and user-friendly WordPress site. They delivered exactly what we needed and made our creative ideas into tangible elements on the site. The team was super responsive and comms updates were great. Thanks so much to the team – highly recommended!

Sally Hunt

Co-Founder @ Floresco

Most reviews are a review of a company – this is a review of the people. From Day 1 Yellow Peach were great, in fact they challenged some of our assumptions which we not only appreciated but was one of the key reasons for choosing them. We are not techie, so we don’t know what we don’t know. Most of the tenders just blindly presented what we asked for, rather than interrogate our requirements. They worked seamlessly with our other partners and developed a first class website and application with dynamic APIs – totally recommend them and will use again.

David Crimmins

Co-Founder @ Global Health Captial

Web App Development Services

Our web app services focus on building intuitive, scalable applications that support real user workflows.

Laravel Development

Laravel is our first choice framework for building powerful, secure web apps. It’s fast, flexible, and well-suited to platforms that scale. We use Laravel to develop robust back-ends that handle complex business logic and integrate cleanly with other systems.
Custom Web Applications

Interactive, browser-based applications designed around user workflows. From customer portals to internal tools, we build interfaces that are intuitive, responsive, and consistent across devices without sacrificing brand impact or performance.
PHP Development

Where Laravel isn’t the right fit, we deliver custom PHP development tailored to your requirements. This includes extending existing platforms, modernising legacy applications, or building lightweight systems where simplicity, control, and long-term maintainability are key.
Back-End & API Development

Secure, scalable back-end systems that power your application and connect it to your wider platform ecosystem. We design APIs and data layers that integrate cleanly with CRMs, CMSs, payment providers, and third-party services.
Scalable SaaS Products

From early-stage MVPs to established subscription platforms, we build SaaS applications designed for growth. Multi-tenant architecture, permissions, billing logic, and performance are considered from day one.

Latest projects

The Big Issue

Websites

The UK’s number one street paper and social enterprise

Group Accommodation

Software

Websites

A leading group travel platform, continuously evolving for scale

CheqUp

Websites

Medical weight loss programmes with real results

Commonly Asked Platform Development Questions

Commonly Asked Web App Development Questions

Get in touch

How is a web app different from a website?

Websites are primarily content-led. Web apps are functionality-led. A web app typically includes user accounts, dynamic data, integrations, and business logic — such as dashboards, portals, booking systems, or SaaS products.
What types of web applications do you build?

We build a wide range of custom web applications, including customer portals, internal dashboards, workflow tools, booking systems, and subscription-based SaaS platforms. Each application is designed around real user workflows and operational requirements.
Do you build custom web apps or use off-the-shelf solutions?

We specialise in custom web app development. While we may integrate trusted third-party tools where appropriate, the core application is designed and built around your specific needs, rather than forcing your processes into generic software.
Can your web apps integrate with existing systems?

Yes. Integration is a core part of our work. We regularly connect web applications with CRMs, CMSs, payment providers, marketing platforms, and bespoke internal systems using APIs and custom integration layers.
Why do you use Laravel for web app development?

Laravel is our preferred framework for building secure, scalable web applications. It provides a strong foundation for handling complex business logic, integrations, and long-term growth. That said, we remain technology-agnostic and will recommend the best approach for your project.
Are your web applications secure and scalable?

Security and scalability are built in from the start. We follow best practices around authentication, data handling, access control, and performance, ensuring your application remains reliable as usage and complexity grow.