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Fugen Services logo

UK Software Development Agency

Software, apps and AI
built for UK businesses

We build web platforms, mobile apps and AI systems that are fast, findable and genuinely maintainable — then handle the SEO and cloud engineering that keep them growing.

  • Fixed price before build
  • Server-rendered, SEO-ready
  • You own the source code
  • UK-based delivery team
Recognised by
  • GoodFirms — Top App Developers UK
  • ITFirms — top mobile app development companies
  • AppFutura — top app development company
Fugen Services client reviewing live product analytics on a tablet

Trusted by

Product teams, retailers and agencies across the UK and beyond

  • ThinkMe
  • GetTaxi
  • DASH
  • Vrbo
  • TADA Taxi
  • Asana
  • Mealroom
  • Binge
  • Cycl
  • MCD
  • Animl
  • Anoukin
  • Leave
  • Mot

What we do

Everything from the first prototype to the servers it runs on

7 practices, one delivery team. Most clients start with one and expand — which works because the people who built the platform are the people who then run and grow it.

How we work, in four lines

Fixed

Price agreed in writing before we build

100%

Source code ownership transferred to you

UK

Based delivery team and working hours

30 days

Post-launch fixes included as standard

Technical stack

Chosen so you can hire for it

We pick mainstream, well-supported technology on purpose. The test is not what is interesting to write — it is whether you can recruit someone to maintain it in three years.

Mobile Development

Native

  • Swift logoSwift
  • Objective-C logoObjective-C
  • Kotlin logoKotlin

Cross-platform

  • Flutter logoFlutter
  • React Native logoReact Native
  • Xamarin logoXamarin

Web Development

Frontend

  • React logoReact
  • Angular logoAngular
  • Vue logoVue
  • TypeScript logoTypeScript
  • JavaScript logoJavaScript

Backend

  • Node.js logoNode.js
  • Python logoPython
  • Java logoJava
  • PHP logoPHP

Data & Storage

Databases

  • PostgreSQL logoPostgreSQL
  • MySQL logoMySQL
  • MongoDB logoMongoDB

Also working with

Frameworks

  • Next.js
  • Nest.js
  • Laravel
  • Django
  • FastAPI
  • Svelte
  • Astro
  • Tailwind CSS

AI & data

  • Mistral
  • Claude
  • OpenAI
  • Llama
  • LangChain
  • pgvector
  • Qdrant
  • Pandas

Cloud & DevOps

  • AWS
  • Azure
  • Google Cloud
  • Docker
  • Kubernetes
  • Terraform
  • GitHub Actions
  • Cloudflare
  • Redis
  • LiteSpeed

Platforms & APIs

  • WordPress
  • Shopify
  • WooCommerce
  • GraphQL
  • REST
  • Stripe
  • Firebase
  • Supabase
  • Prisma

Verified expertise

Certifications

Our engineers hold current platform certifications, so the architecture decisions on your project come from people who have been examined on them.

  • Microsoft — Certified: Associate

    Microsoft

    Certified: Associate

  • AWS — Certified Developer – Associate

    AWS

    Certified Developer – Associate

  • AWS — Certified Solutions Architect – Associate

    AWS

    Certified Solutions Architect – Associate

  • AWS — Certified Security – Specialty

    AWS

    Certified Security – Specialty

  • Microsoft — Dynamics 365 Fundamentals (CRM)

    Microsoft

    Dynamics 365 Fundamentals (CRM)

Recognition

Awards & listings

Independent directories that have reviewed and ranked our work.

  • GoodFirms — Top App Developers, UK

    GoodFirms

    Top App Developers, UK

  • ITFirms — World's Top Mobile App Development Companies

    ITFirms

    World's Top Mobile App Development Companies

  • AppFutura — Top App Development Company

    AppFutura

    Top App Development Company

  • Clutch — Top Development Partner

    Clutch

    Top Development Partner

Fugen Services engineers collaborating on a client project

Why choose us

Four things you can hold us to

Every agency claims to be passionate and innovative. These are commitments instead — the kind you can point at if we fall short.

  • A fixed price before we build

    Discovery ends in a written scope and a fixed number. Scope changes are re-quoted in writing, never absorbed silently and invoiced later.

  • You own everything

    Repository, deployment configuration, database and documentation transfer on final payment. No builder you cannot leave.

  • Weekly working software

    Something clickable on a staging URL every week — not a status report. It is the only reliable way to catch a misunderstanding cheaply.

  • We will talk you out of things

    If off-the-shelf software fits, or the AI project is not worth building, or repairing beats rebuilding, we say so. We lose work this way and keep doing it.

How we work

Questions

Straight answers

The things people ask before getting in touch. More on our Q&A page.

We design and build software for UK businesses: websites and web applications, iOS and Android apps, AI systems such as assistants and document processing, and the cloud infrastructure and SEO work that keep them performing. Projects are scoped and priced in writing before any build starts.

A focused marketing website starts from £4,500 and a custom web application from around £12,000. Mobile apps typically start from £15,000, and AI projects begin with a £3,000 to £6,000 feasibility assessment that tells you whether the build is worth doing. You always receive a fixed price before work begins.

We work with clients across the United Kingdom, including London, Manchester, Birmingham, Leeds, Glasgow, Bristol, Liverpool and Edinburgh. Projects run remotely with scheduled video reviews, and we arrange in-person meetings for larger engagements.

Yes, outright, on final payment — repository, deployment configuration and documentation included. We build on mainstream technologies specifically so another team could take the project over. Lock-in is not part of our commercial model.

Discovery usually begins within one to two weeks of agreement. Smaller pieces of work can often start sooner. We will tell you honestly if our next availability does not suit your deadline rather than accepting the work and delaying you.

Let’s shape what you build next

Send us the problem and we will come back with a technical outline and an indicative range — no charge and no commitment. If we think you need less than you asked for, we will say that too.

Illustration of a technical proposal being reviewed against project metrics
Become a partner

Individually we are drops of water. Together, an ocean.

We work with agencies, consultancies and product teams who need engineering capacity they can put their name to. White-label delivery, your client relationship, our build team.

Map showing the regions Fugen Services partners work across

Tell us what you are trying to build

A 30-minute call is usually enough to tell you whether the idea is viable, roughly what it costs, and what we would do first. No obligation, and no sales script.