01
Discovery
We start with a deep dive into your goals, audience, and technical requirements.
Strategy session, requirements gathering, project scoping
Open for new projects
Websites & Apps
AI-Led Design + Development
UI/UX Development. Security-first engineering. Robust code designed to last..
Trusted by founders at
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Projects shipped
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Client Satisfaction
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Years in the game
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Team members
(yes, really)
(yes, really)
Services
What we do
Full-stack design and development for crypto and web3 founders
Product & UX
User-centered design that drives outcomes and engagement.
- User research & testing
- Interface design
Web Engineering
Fast, scalable development with quality assurance.
- Modern frameworks
- Performance optimization
Web3 & Emerging
Blockchain integration and decentralized applications.
- Smart contracts
- Wallet integrations
Retainers
Ongoing support and continuous development.
- Monthly maintenance
- Feature updates
Ready to start your project?
Book a discovery call to discuss your needs
Featured Work
Platforms designed for performance and exceptional user experience
BTCPay Server
LiveClean, modern design for the BTCPay Server main landing page and Foundation website.
Live sitePerformance
Landing + FoundationOutcome
HTML5CSSJavaScript
View Project
WalletScrutiny
Current versionCollaborative project with the Bitcoin Design Community to redesign the WalletScrutiny brand and website.
Current versionPerformance
Brand + Website redesignOutcome
JavaScriptHTML5SCSS
View ProjectProcess
How we work
Our proven process delivers results on time and on budget
02
Design
User-centered design that balances aesthetics with functionality and performance.
Wireframes, prototypes, visual design, user testing
03
Development
Modern, scalable code built with best practices and continuous integration.
Frontend & backend development, testing, optimization
04
Launch
Seamless deployment with ongoing support to ensure your success.
Deployment, monitoring, training, maintenance
Ready to get started?
Let's discuss your project and timeline
Pricing
Simple, transparent pricing
One subscription covers everything. No hidden fees, no surprises.
£2,995/month
What's included
- Unlimited requests & revisions
- 48-hour turnaround on most tasks
- Direct Slack/Discord communication
- Staging environments included
- Pause or cancel anytime
Get started today
Book a call to discuss your project
Example project costs
Here's how our subscription model works for different project types
Landing Page
Marketing website with 5-8 pages
2-3 weeks
Subscription cost:1 month
Web App MVP
Full-stack application with auth & database
6-8 weeks
Subscription cost:2 months
E-commerce Platform
Complete online store with payments
8-12 weeks
Subscription cost:3 months
Ready to get started?
Book a discovery call to discuss your project needs
Frequently Asked Questions
Answers to the bits we get asked the most
Still have questions?
We're here to help with anything else you'd like to know about your project.
Chat with usWhat is Availability?
We operate with limited active spaces per month, usually no more than 2 active clients per developer. This ensures you and your project get the attention required for success.
How much does it cost?
From £2,995/month. Quarterly −15%. Pause/cancel anytime. This covers dedicated development time and ensures consistent progress on your project.
Why the subscription model?
Our subscription model ensures consistent, dedicated development time for your project. It allows us to plan resources effectively and offer better rates for longer commitments.
What if I need a different timeframe?
We're flexible and can accommodate different project timeframes. Contact us to discuss your specific needs and we'll find a solution that works for you.
How long will my project take to complete?
Project timelines vary depending on complexity. A typical website takes 4-8 weeks, while larger applications may take 3-6 months. We'll provide a detailed timeline during our initial consultation.
Do you work with teams?
Yes, we collaborate effectively with in-house teams and other contractors. Our experience in team environments helps ensure smooth integration with your existing workflow.
Tell Us About Your Project
Jump on live chat or fill in the form — we'll get back within a day.
Let's chat about your project
We're here to turn your ideas into reality with our design and development know-how.
Featured Work
Recent projects
A selection of our latest work across web3, fintech, and digital platforms
Live
Archimedes Finance
Secure Asset Tokenization Platform for institutional investors
Timeline8 weeks
PlatformWeb App
IndustryFinTech
Demo
Honey Pay
Instant settlement payment framework built on Berachain
Timeline6 weeks
PlatformWeb3
IndustryCrypto
Live
WalletScrutiny
Bitcoin wallet security analysis platform redesign
Timeline12 weeks
PlatformWebsite
IndustrySecurity
Live
BTCPay Server
Open-source Bitcoin payment processor platform
Timeline10 weeks
PlatformWebsite
IndustryBitcoin
Ready to start your project?
Let's discuss your vision and bring it to life
Tools We Trust
Best-in-class tech for every build
Infura
Vue.js
Cloudflare
Webflow
WalletConnect
Node.js
Neon
GitHub
BTCPay
Vercel
Stripe
Affinity
ChatGPT
DeepSeek
.svg){kind=logo}
Le Chat
Infura
Vue.js
Cloudflare
Webflow
WalletConnect
Node.js
Neon
GitHub
BTCPay
Vercel
Stripe
Affinity
ChatGPT
DeepSeek
Le Chat
Testimonials
What Our Clients Say
Hear from founders who’ve trusted us with their digital vision
Working with Flat 18 felt like having an in-house team. They were responsive, strategic, and nailed the design on the first try.
Flat 18 rebuilt our web app from scratch and the performance boost was immediate. Page loads are faster, UX is cleaner, and our team can finally move fast again.
They took our outdated site and gave it a clean, modern look without losing what made our brand special. The new site is performing better across every metric.
Flat 18 guided us through the Web3 space like pros. Their dashboard design is sharp, intuitive, and fully integrated with our smart contracts.
We’ve worked with bigger agencies that didn’t deliver half as much value. Flat 18 was fast, focused, and genuinely cared about the outcome.