App Development for
UK Businesses
Custom web and mobile apps for UK SMEs — fixed-price. Simple tools live in days, full business apps in weeks, with AI integrated from day one. No agency bloat. No 6-month waits.
What We Build
Bespoke apps for UK businesses — not off-the-shelf, not templated, not slow.
Web Application Development
Bespoke web apps for UK SMEs — portals, dashboards, workflow tools, CRMs. Modern stack, fast delivery, fixed price.
Mobile App Development
iOS and Android apps that work. MVP to full product. We ship in weeks, not months — at prices UK SMEs can actually afford.
AI-Integrated Apps
Intelligent forms, document automation, AI chatbots, predictive dashboards — AI built in from day one, not bolt-on.
SaaS Product Development
Building a UK SaaS product? We take you from idea to paying customers — MVP in 6–8 weeks, scalable architecture from the start.
Legacy App Modernisation
Replace that 10-year-old system still running on Access or aging PHP. Modern stack, better UX, lower running costs.
API & Integration Development
Connect your existing tools — Xero, Salesforce, Microsoft 365, Stripe, custom APIs. Make your stack work together.
Why UK SMEs Choose Gridisys
Fixed-Price Projects
Every project quoted upfront with a fixed price. No hourly billing, no surprise invoices. You know exactly what you're getting and what it costs.
AI From Day One
We don't bolt AI on at the end. Intelligent automation, LLM integration, and AI-powered workflows are part of how we build, from the first sprint.
Fast Delivery
A focused MVP in 4–8 weeks. A full web app in 8–16 weeks. We work in sprints with weekly demos — you see progress every week, not just at the end.
Cybersecurity Native
Everything we build has security baked in — secure auth, encrypted data, OWASP-aware development. No security retrofit needed post-launch.
What UK SMEs Ask Us to Build
Real questions from UK business owners — and what we build to solve them.
"How do I replace my spreadsheet-based process with an app?"
We scope exactly which spreadsheet workflows to replace, build a custom app that does the same job better, and migrate your data. Simple automation to full workflow apps.
"I need a customer-facing portal — how much would that cost?"
A branded client portal (login, document upload, status tracking, messaging) is fixed-price depending on features. We deliver in 2–4 weeks. Book a free scoping call for a tailored quote.
"Can you build an app that connects to Xero / QuickBooks?"
Yes — we integrate with Xero, QuickBooks, Sage, and most UK accounting platforms. Integration scope is included in the fixed-price quote depending on depth. Book a free scoping call for a tailored quote.
"We have engineers in the field — they need a mobile app"
Job management apps for field teams: job dispatch, photo uploads, GPS, customer sign-off, invoice generation. Offline-capable. Fixed-price depending on complexity. Book a free scoping call for a tailored quote.
"How quickly can you build something basic?"
A focused single-tool app (one workflow, one screen type) can be scoped, built, and live in 1–2 weeks. We're not an agency with 10 layers of approval — we move fast.
"Can you build a simple booking system for my business?"
Yes — custom booking systems. We build exactly what your business model needs, not a generic SaaS with features you'll never use and limitations you didn't expect.
App Development Across the UK
We work with SMEs in every major UK city and nationwide.
London
Custom apps for London's dense SME market — fintech, legal, property, retail.
Manchester
Northern powerhouse tech — digital agencies, retail, manufacturing, logistics.
Birmingham
Midlands manufacturing, professional services, growing startup scene.
Leeds
Financial services, retail, healthcare, and a booming tech sector.
Bristol
Creative tech, aerospace, digital media, and a thriving startup ecosystem.
Edinburgh
Scottish fintech, legal, tourism, and enterprise software.
Liverpool
Maritime, logistics, hospitality, and professional services.
Sheffield
Advanced manufacturing, healthcare, digital and creative industries.
Cardiff
Welsh SMEs in public sector, retail, professional services, and fintech.
Glasgow
Scotland's largest city — finance, healthcare, engineering, retail.
App Development UK — FAQ
Build Your App with Gridisys
Free 30-minute discovery call. We'll scope your project and give you a fixed-price quote. No commitment required.
Book a Free Discovery Call