Build

Web and mobile apps that run your business

Delta Nexus designs and develops web apps, mobile apps and internal tools such as booking systems, customer portals, dashboards and point-of-sale apps. Projects start from £2,900, ship in 4 to 8 weeks, and work on any device with real-time sync between staff.

Spreadsheets and paper break as you grow. We turn your daily processes into simple apps your team actually likes using, with clean design, secure sign-in and data that stays in sync on every device.

Updated 19 October 2026
Why it works

What you get with Delta Nexus

01

Designed around your process

We map how your team works first, then remove steps instead of adding screens.

02

Works on every device

Responsive web apps and installable mobile apps from one codebase.

03

Real-time and secure

Role-based sign-in, live data sync and regular backups.

04

Ready to grow

Start with a lean MVP, then add features as the business proves what it needs.

What's included

  • Discovery workshop and user flows
  • UI design and clickable prototype
  • Web app or iOS and Android app
  • Sign-in, roles and permissions
  • Dashboards and reports
  • Integrations with payments, CRM or accounting
  • Testing, launch and app store submission
  • Maintenance plan options

Who it's for

Retail and fashionClinics and health servicesEducationLogisticsField servicesStart-ups

Where we work

How it works

From first call to launch

  1. 01 · Day 1Free auditA 30-minute call to review your site, channels and goals. You get a written plan, whether you hire us or not.
  2. 02 · Days 2–4DesignSitemap, wireframes and visual design for your approval. Bot scripts and tone of voice agreed up front.
  3. 03 · Days 5–11Build & trainWe develop the site, connect your tools and train the AI on your real FAQs, products and policies.
  4. 04 · Days 12–14LaunchTesting on real devices, speed and SEO checks, team handover and a recorded walkthrough.
  5. 05 · MonthlyGrowWe tune the bot from real chats, publish content, run ads and send a plain-language report each month.
Proof

Recent web & mobile apps work

Delta Fashion · store app
Delta Fashion store app: homepage built by Delta Nexus
Web appRetailEN · ES

Delta Fashion store app

An all-in-one app for a fashion shop. Staff sign in with a PIN, and the till, stock and sales dashboard stay in sync on every device.

  • Till with barcode scan, offers and printed invoices
  • Stock by size and colour, with restock alerts
  • Live sales dashboard and CSV export
  • Staff rota, leave requests and safety training
  • App design
  • Real-time sync
  • Bilingual
Open the app
Questions

Web & mobile apps: FAQs

Straight answers to what people ask us most.

How much does it cost to build an app?

Our apps start from £2,900 for a focused MVP or internal tool. Larger apps are quoted at a fixed price after we map the features with you.

Do you build native iOS and Android apps?

We usually build cross-platform apps that run on iOS, Android and the web from one codebase, which is faster and cheaper to maintain.

Can you show an example?

Yes. Our Delta Fashion store app covers the till, stock by size and colour, a live sales dashboard, staff rota, leave and safety training, in English and Spanish.

Who owns the code?

You do. All code, designs and data are transferred to you.

Get a fixed quote for web & mobile apps

Free 30-minute audit, written plan and fixed price. No obligation.

Book my free audit