Web, App & Software Development Built for UK & USA Businesses

It depends on what you're building, but here's a realistic range. A basic MVP starts from around £5,000. A mid-complexity app built in React Native or Flutter, with a backend, admin panel, and full App Store and Play Store submission, usually lands somewhere between £12,000 and £30,000. Enterprise platforms with complex integrations start from £50,000 and go up from there. UK agencies typically charge £80,000 or more for the same scope. Working with a UK-managed offshore team like Arramton delivers the same quality at 40 to 60% lower cost. Always ask for a fixed-price quote before signing anything. Time-and-materials estimates almost always run over budget.

For most UK businesses, a hybrid model works best. That means UK or US project management paired with offshore engineering. Pure local agencies charge anywhere from £600 to £1,200 per developer per day. Pure offshore with no UK oversight tends to create communication gaps and missed deadlines. A hybrid model like Arramton's costs around £150 to £350 per day equivalent, while keeping accountability in your timezone. With AI-assisted development now standard across the industry, offshore senior engineers are producing work comparable to local mid-senior developers. The quality gap that existed in 2018 has largely closed.

Yes, and in 2026 this is one of the most common things clients come to us for. We handle integrations with OpenAI GPT-4o for chat and content generation, Claude API for document analysis and reasoning, RAG pipelines for searchable knowledge bases, and AI-powered search to replace old keyword systems. Most integrations take somewhere between 2 and 6 weeks depending on complexity. A basic chatbot integration starts from around £2,000. Custom LLM workflows with fine-tuning or complex logic start from £15,000. We always advise on the right model for your use case because not every app needs GPT-4o, and picking the wrong one just adds cost with no benefit.

Timelines have got shorter because AI-assisted development is now part of how we work. A basic MVP typically takes 4 to 8 weeks. A full-featured consumer or B2B app takes 10 to 16 weeks. Enterprise platforms usually take 4 to 9 months. The slowest part is rarely the development itself. Discovery, design approvals, and App Store review (1 to 7 days for iOS, 2 to 3 days for Android) are where delays happen. Skipping the discovery phase to save two weeks almost always creates 6 to 8 weeks of rework down the line. We recommend starting every project with a paid 2-week discovery sprint before the full build begins.

Staff augmentation means one of our developers joins your team directly. They attend your standups, use your tools, and report to your leads, but they are employed by us, not you. That means no IR35 liability, no employer National Insurance, no recruitment fee, and no drawn-out hiring process. We present pre-vetted candidates within 48 hours and most clients have a developer in their first standup within 72 hours. Rates start from £1,800 per month, compared to £4,500 to £9,000 per month equivalent when you factor in taxes and fees for a UK contractor. It has become increasingly popular since 2024 as businesses freeze permanent headcount but still need to ship product on schedule.

Yes, completely. Full IP assignment is written into every Arramton contract. Source code, designs, databases, and all related assets transfer to you on final payment. We sign an NDA before the discovery call, not after. Your code lives in your own GitHub or GitLab repository from day one of the project, so you are never waiting for a handover at the end. For staff augmentation, everything our engineers build on your systems belongs to you from the moment it is written, exactly the same as it would be with a permanent employee. We put all of this in writing before any work starts.