Outdated systems block growth. We build custom business software and web-based enterprise systems using proven web-based custom software development services.
As a trusted cloud software engineering firm, our custom application developers UK have delivered 100+ successful solutions across industries through scalable web application development built for UK clients.
Square-Root stands among the best UK-based web software companies, known as award-winning creator of custom software solutions. As a trusted web-based custom software development company, we offer scalable solutions that are secure, performance-driven, and industry-aligned.
Our position as a leading UK digital product engineering firm is backed by 300+ successful app deliveries and a 4.9/5 client rating on Clutch UK. We serve over 15 UK industries with precision-driven, bespoke web app development using modern frameworks and certified UK software developers. Our custom software agencies support both startups and enterprises with reliable UK development teams and a 24/7 UK-based project support availability. With a 98% client retention rate and a 95% project success rate, we continue to develop and design bespoke web-based custom app software that supports long-term digital growth.
We offer comprehensive web-based custom software development services built on API-first architecture and custom digital platforms. From enterprise-grade web systems to CRM, ERP, and payment gateway integration, we build engaging and interactive web-based custom software with 100% tailor-made functionality. Our apps scale to 1M+ users and are delivered 30% faster than the industry average.
We create tailor-made web applications and custom enterprise platforms designed for UK SMEs. Our business software solutions are 100% tailored to meet unique workflows using ROI-focused architecture. Industry-specific business apps reduce manual tasks by 35% through business automation web platforms. Choose us to create your custom business software development.
Our team delivers top SaaS application development for subscription-based platforms with scalable SaaS business models. Using cloud-native product development, our UK SaaS product development team launches MVPs in 90 days. We support multi-tenant platforms that scale to 1M+ users with 99.9% uptime perfect for the creation of customized SaaS software.
As a leading PWA development company in the UK, we build cross-device web apps and installable web applications that are mobile-first and offline-capable. With 50% improved load time and a 90% mobile user engagement rate, we craft PWAs that work seamlessly across all browsers and devices for better engagement.
We develop unique customer self-service portals, enterprise information hubs, and admin dashboards with GDPR-aligned portal data architecture. Our UK client-facing portal development enables secured user role management. Our B2B and B2C self-service platforms reduce customer service tickets by 70% through optimized portal UX/UI strategies.
We follow API-first development for legacy system modernization and ERP/CRM integration. Using REST & GraphQL APIs, our team ensures 100% compliance with API security standards. With custom API gateways and third-party system integration, our platforms offer 30% faster system response and a 99.5% API call success rate.
We’re not just another custom web software development agency in UK, we’re your strategic custom software partner, trusted by 97% UK client satisfaction rate. Our local development teams bring 15+ years of experience in UK digital projects, with deep expertise in crafting web-based custom software that solves real-world business challenges.
We follow an agile and collaborative process that allows flexibility across the entire project lifecycle. From idea to deployment, we provide end-to-end software lifecycle support, ensuring 24/7 dedicated project support and full alignment with industry-specific compliance (GDPR, ISO, FCA). With a consistent track record in trusted software development in London, businesses rely on us for scalable, future-ready solutions.
As a best-in-class custom web software development company, we follow a lean and transparent web application development methodology that speeds up delivery and ensures product-market fit with every release.
We initiate each project with structured requirement analysis workflows to define core functionality, user expectations, and tech stack, aligning your needs with a clear discovery to deployment roadmap.
Our team builds wireframes and interactive prototypes early on, enabling fast iterations and validations. This phase reduces rework and supports smoother collaboration with stakeholders.
We break down the full software development lifecycle into weekly deliverables. Every cycle includes Agile sprint cycles with weekly sprint demos with 100% transparency to keep you fully informed.
Using modern tech stacks, we build robust and scalable custom web software application development with a focus on backend efficiency, frontend speed, and security compliance.
Each module undergoes rigorous QA. Our QA testing success rate of 98.5% reflects our commitment to shipping stable code, tested across environments, browsers, and devices.
We deploy via secure CI/CD pipelines. Projects go live 40% faster using Agile practices without compromising on code quality or performance.
As a prominent web-based custom software development company, we deliver UK sector-specific app development tailored to healthcare, finance, education, retail, and logistics. We’ve delivered 50+ industry-specific web solutions backed by domain-specific accelerators for faster delivery.
Our team builds industry-ready web platforms that scale securely and meet evolving market needs. We offer software solutions for regulated industries by designing 100% GDPR and industry-compliant platforms. Whether you’re modernizing legacy workflows or launching a new digital product, we focus on building time-tested Web-Based software that’s stable, secure, and ready for high-demand environments. Every platform aligns with compliance, efficiency, and your business-specific processes.
Web-based custom software development creates tailored applications that run on web browsers. Developers design these solutions to meet specific business needs using technologies like HTML, CSS, JavaScript, and server-side frameworks. These apps offer accessibility, scalability, and platform independence.
UK businesses need web-based custom applications to streamline operations, support remote work, and meet specific regulatory and customer demands. These apps provide real-time data access, scalability across regions, and integration with existing systems, making them essential for digital transformation and competitive advantage.
The cost to build web-based custom software ranges from £10,000 to over £100,000. Prices depend on project complexity, required features, user load, and integration needs. Simple apps cost less, while enterprise-grade systems with advanced functionality, security, and scalability require higher budgets and longer timelines.
Custom web software development uses technologies like HTML, CSS, JavaScript, and frameworks such as React, Angular, and Vue for front-end development. Back-end technologies include Node.js, Python (Django/Flask), Ruby on Rails, and PHP. Databases like PostgreSQL, MySQL, and MongoDB support data management.
The timeline for developing a custom web-based software application ranges from 3 to 9 months. Small projects may take 3–4 months, while complex systems with multiple integrations and features can extend to 6–9 months. Timelines depend on project scope, team size, and testing phases.