Web App Development Leeds.
Custom web applications, SaaS platforms and internal tools for Leeds businesses — built to a fixed price, delivered on time. We build with React, Next.js, Vue, Node.js and Python, from MVPs to enterprise platforms.
Web applications we build for Leeds businesses.
Leeds's financial services, legal tech, healthcare and retail sectors generate specific requirements for web software. We work across all these use cases at fixed price.
SaaS Platforms
Multi-tenant SaaS with subscription billing (Stripe), role-based access, team management and scalable cloud infrastructure. We've built B2B SaaS used by 150+ businesses. From £15,000.
Internal Business Tools
Replace spreadsheets and manual workflows with bespoke internal apps. Operations dashboards, approval workflows, inventory systems, order management — built for your exact process.
Customer & Partner Portals
Secure authenticated portals for your customers, partners or suppliers. Self-service document management, status tracking, onboarding flows and data download — reducing support burden significantly.
Marketplaces & Booking Systems
Two-sided marketplaces, service booking platforms and directory sites with payments, reviews and smart matching. We built a multi-vendor marketplace with Stripe Connect and inventory sync.
Dashboards & Reporting Platforms
Real-time data visualisation, analytics dashboards, automated reporting and alerts. We integrate with your existing data sources — APIs, databases, CSV exports, third-party platforms.
Web App MVPs
Lean web applications to validate your product idea with real users before committing to a full build. Typically £10,000–£18,000, delivered in 8–12 weeks. Smart scope, fast to market.
Our web development tech stack.
We choose tools proven at scale — not whatever's trending. Every stack decision is explained and agreed before development begins.
Frontend
React 18, Next.js 14 (App Router), Vue 3 and TypeScript. Tailwind CSS for utility-first styling. Vite for fast development builds. We build accessible, performant interfaces that work across devices.
- React / Next.js — best for SEO, SSR, complex state
- Vue 3 — great for dashboard-heavy tools
- TypeScript — type-safe, maintainable, scalable
- Tailwind CSS — fast, consistent styling
Backend & API
Node.js (Express, Fastify), Python (FastAPI, Django), .NET 8 or Go — depending on project requirements. REST and GraphQL APIs. Secure, documented, performance-tested.
- Node.js — fast iteration, large ecosystem
- Python FastAPI — great for data-heavy APIs
- .NET 8 — enterprise-grade, excellent performance
- Go — high-throughput, low-latency services
Database
PostgreSQL (relational, compliance-friendly), MongoDB (flexible document store), Redis (caching, sessions, queues), Supabase (PostgreSQL with real-time and auth built in).
Cloud & Hosting
AWS (EC2, RDS, S3, Lambda, CloudFront), Google Cloud Platform, Azure and Firebase. Docker for containerisation, GitHub Actions for CI/CD, Terraform for infrastructure-as-code.
Fixed-price web app development.
Every project is quoted at a fixed scope and fixed price — no hourly billing, no surprise costs.
Simple Web App
£10,000–£20,000
8–12 weeks · Authentication, key feature set, basic analytics, cloud hosting setup. Good for MVPs and focused internal tools replacing spreadsheets.
Mid-Complexity Platform
£25,000–£60,000
12–20 weeks · Multi-user roles, third-party integrations, admin dashboard, Stripe billing, reporting. SaaS products and customer portals.
Enterprise / Marketplace
£60,000+
4–8 months · Multi-tenancy, advanced permissions, real-time features, ERP/CRM integration, compliance architecture, scalable infrastructure.
Leeds web app development FAQ
How much does web app development cost in Leeds?
In Leeds, web app development starts from £10,000. Financial services and legal tech platforms — Leeds's strongest sectors — often require compliance-aware architecture and cost £25,000–£50,000. Retail and e-commerce tools typically fall in the £15,000–£35,000 range. Fixed-price quotes from Mantar Tech after a free scoping session.
Do you build GDPR-compliant or regulated web apps for Leeds financial and legal firms?
Yes. We understand the data handling requirements for financial services and legal platforms — GDPR compliance by design, role-based access control, comprehensive audit trails. Leeds is one of the UK's most important financial centres outside London and we work with clients there across fintech, insurance and professional services.
Web app or mobile app — which should I build first?
For internal tools and B2B platforms: web app first — easier to update, no App Store approval, accessible from any browser. For consumer products where engagement and offline access matter: mobile app first. Many businesses start with a web app MVP, then add a mobile layer. We can advise based on your specific users and use case.
Can you integrate with our existing CRM, ERP or other systems?
Yes — integration work is a core part of most projects. We map your existing systems during the free discovery session and factor all integration complexity into the fixed-price scope. We've integrated with Salesforce, HubSpot, SAP, Xero, QuickBooks, Stripe, Twilio and many bespoke internal APIs.
Do you handle hosting, domain and ongoing infrastructure?
Yes — we set up and configure cloud hosting as part of the project. Post-launch we can continue managing infrastructure or hand it over to your team with full documentation. Ongoing hosting costs (AWS/GCP/Azure) are separate to our development fee and typically £100–£500/month depending on scale.
Do I own the source code?
100% ownership of all source code, documentation and intellectual property transfers to you on project completion. Git repository access is provided from day one. You can take development to another team at any point — zero lock-in.