# 540 Interactive, LLC

> A Leading Web, Mobile App & Software Development Studio

- Canonical listing: https://agencysource.com/agencies/540-interactive
- Location: Darien, CT
- Categories: [Web Development](https://agencysource.com/categories/web-development), [Custom Software Development](https://agencysource.com/categories/custom-software-development), [Mobile App Development](https://agencysource.com/categories/mobile-app-development), [UX/UI & Product Design](https://agencysource.com/categories/ux-ui-design), [AI & LLM Development](https://agencysource.com/categories/ai-development)
- Services: Mobile App Development, Web Development, Custom Software Development, Application Testing, UX/UI Design
- Team size: 2 - 9
- Hourly rate: $50 - $99 / hr
- Minimum project: $5,000+
- Founded: 2007
- Website: https://540interactive.io
- Listing: Not yet claimed
- Agency Source rating: no Agency Source reviews yet

## About

540 Interactive is a custom web, mobile, and AI development agency with 18 years of experience building digital products for businesses across Greenwich, Stamford, Fairfield County, Connecticut and across the United States.

We build three categories of work: custom websites and web applications for businesses that need more than a template; native iOS and Android mobile apps for companies ready to meet their customers on mobile; and AI-powered systems — including LLM integrations, RAG pipelines, and autonomous AI agents for organizations looking to automate knowledge work and create operational leverage.

Our clients are primarily professional services, financial services firms, and growth-stage businesses. They choose 540 Interactive because we bring enterprise-grade engineering discipline to every engagement.

Every project starts with a free scoping consultation. We tell you exactly what it will cost before we write a line of code.

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