Services — App Development & Design

01 — Mobile apps

Native & cross-platform mobile development

Fast, beautiful, reliable apps for iOS and Android. We pick the right tool for the job — native Swift/Kotlin where it matters, React Native or Flutter where speed wins.

Swift & SwiftUI for iPhone, iPad, Apple Watch
Kotlin & Jetpack Compose for Android
Full App Store & Google Play submission and review support

App.swift

@main
struct BizApp: App {
  var body: some Scene {
    WindowGroup {
      RootView()
        .environment(\.theme, .brand)
    }
  }
}
// 4.8★ average across the App Store

02 — Product design

UX research, UI design & prototyping

Good design is what makes people stay. We research, sketch and prototype until the experience is right — then build a reusable design system so it stays consistent as you grow.

User research, journey mapping and usability testing
Interactive Figma prototypes you can test before building
Scalable design systems and accessible-by-default components

DESIGN SYSTEM

Components

03 — Backend & cloud

APIs, infrastructure & integrations

Your app is only as good as what's behind it. We build secure, observable backends with the integrations modern products need — payments, auth, messaging and real-time data.

REST & GraphQL APIs, real-time sockets and webhooks
Cloud infrastructure on AWS, GCP and Azure
Stripe payments, OAuth, push notifications and analytics

api/orders.ts

export async function createOrder(req) {
  const user = await authenticate(req)
  const order = await db.orders.insert({
    userId: user.id,
    items: req.body.items,
    status: "pending",
  })
  return json(order, 201)
}

Capabilities

A complete product team

Discovery sprints

Validate an idea fast with research, a prototype and a costed roadmap.

MVP builds

Launch a focused, market-ready first version in weeks, not quarters.

App rescues

Inherited a struggling codebase? We stabilise, refactor and ship.

Dedicated teams

An embedded squad that works as an extension of your own team.

App Store optimisation

Listings, screenshots and keywords tuned to convert browsers to users.

QA & automation

Automated and manual testing across the devices your users carry.

Maintenance & support

SLAs, monitoring and proactive updates that keep apps healthy.

Accessibility audits

WCAG-aligned reviews so your product works for everyone.

Ways to work together

Engagement models that fit your stage

Indicative starting points — every project is scoped and quoted transparently after discovery.

Discovery sprint

£4,500/ fixed

A focused two-week engagement to de-risk your idea before you commit to a full build.

Stakeholder workshops
Clickable prototype
Costed delivery roadmap

Enquire

Frequently asked

How long does it take to build an app?

A focused MVP typically takes 8–14 weeks from kick-off to store launch, depending on scope and integrations. After our discovery sprint you'll have a clear, realistic timeline before any build work begins.

Do you build for both iOS and Android?

Yes. We build native apps for each platform and also use cross-platform frameworks like React Native and Flutter when a shared codebase is the better fit. We'll recommend the right approach for your goals and budget.

Who owns the code and intellectual property?

You do — completely. On final payment, all source code, designs and IP transfer to you, with full documentation and a clean handover. There's no lock-in to Bizleads.

Can you take over an existing project?

Absolutely. We regularly inherit existing codebases. We start with a short technical audit, then stabilise, document and improve the app before adding new features.

What happens after launch?

We offer ongoing maintenance and support plans covering monitoring, OS updates, bug fixes and new feature work — so your app stays healthy and keeps improving long after release.

Let's build

Ready to scope your project?

Send us the details and we'll get back to you within one working day with practical next steps.

Start a project See our work

Everything you need to design, build and grow an app.