Web application development in Cornwall
Got a great idea? We build sustainable web apps for founders and teams who need to go to market quickly, start validating ideas and take them further. We also build for established businesses who’ve outgrown their tools and need something that fits the way they work
We won Best Development Agency 2026 · National Digital Awards – so we must be doing something right. 🙂
Ready to get started? Tell us your idea, and we’ll help you make it a reality.
13A Kenwyn Street, Truro, Cornwall, TR1 3DJ
01726 247 050
Loading the calendar…
Send us a message
"*" indicates required fields
Crafting sustainable apps and websites with
Web app development in Cornwall
Why people like working with us
Whether you’re testing a brand new idea or replacing a system your team has outgrown, you want to know the people building it get it. Here’s what you can expect from us:
- A product, not just code – we help you work out what to build and why, as well as how.
- Fast to market, built to last – we get MVPs in front of real users quickly, on foundations that grow with you.
- One team in one place – strategy, UX, design, development and launch, all under one roof in Truro.
- Straight talking – clear timelines, honest costs, and if there’s a simpler way to test your idea, we’ll say so.
- Kinder to the planet – as a B Corp we build lean, host green and offset what’s left on every project.
Web app development Cornwall
Not sure where to start?
Tell us your idea, and we can take it from there
What happens when you get in touch
1. A quick chat. 30 minutes, no pitch. You tell us about the idea or the problem, we ask a lot of questions and tell you honestly whether we’re the right fit.
2. A clear proposal. If we are, we scope it properly and come back with what we’d build, what it’ll cost and how long it’ll take. You decide.
3. We build it together. You’ll see progress every week, test it with real users along the way and launch with a team that’s still around afterwards.
Loading the calendar…
What we develop
MVPs and new products – the first version of your idea, in front of real users fast, built to grow if it works.
Customer portals and booking systems – self-service tools that take pressure off your team and give your customers a better experience.
Internal tools and dashboards – replacing the spreadsheets, manual processes and off-the-shelf software your business has outgrown.
Integrations and APIs – getting your systems talking to each other so data flows without someone re-typing it.
SaaS platforms – multi-user products with accounts, billing and the infrastructure to scale.
AI-powered features – search, summarising, recommendations and automation built into the tools you already use.
Every one of them secure, accessible, built on clean code and hosted with the planet in mind.
Loading the calendar…
Don’t just take our word for it
“The Hiyield team have been responsive to our needs and provided great customer care throughout the complex design and development process.”
“Hiyield was recommended to us, and from the first conversation, we knew they really got the idea and we loved their energy”
“The project had many complex objectives but that only fuelled the motivation and commitment of the team… Their agility, responsiveness and understanding for various user groups and their unique challenges was exactly what we needed, and they have been a pleasure to work with.”
“Hiyield felt like an extension of our team. We were ready to be inundated with questions from our customers after launching but this didn’t happen, is a real testament to the usability of the software. We’ve had great feedback from both customers and internal stakeholders. We’re now looking forward to working with Hiyield on our next project”
“We came to Hiyield with a complex challenge. They understood our mission from day one. The sprint-based approach kept us involved at every stage, and the end result is an app that makes water safety genuinely accessible.”
“Our partnership with Hiyield has been nothing short of transformative. Their dedication felt as if our project was their own. Efficient, skilled, and with a knack for clear communication, they’ve truly elevated our digital game. If you’re looking for a team that’s as invested in your vision as you are, Hiyield is it!”
Built, launched, and actually used
Plenty of good products stall because nobody knows they exist. When you work with us, the team that builds your web app can also help it find its audience: go-to-market strategy, SEO and AI search visibility, content and marketing – all from the same people who know your product inside out.
And launch isn’t goodbye. Most of our clients stay with us for support, improvements and new features as their product and their users grow.
The Wave’s digital transformation
Improving the onsite check-in process
We love our ongoing partnership with Bristol icon: The Wave. They were eager to streamline the way they welcome people onsite and check them in for their bookings. It’s the first touchpoint with the customers, so getting the experience right and automating as much as possible was key.
The current process was manual, with a team using standard tills to check people in when they arrived, causing queues and confusion, so we needed to find a better way.
Using the current systems that The Wave already had in place, our developers used Celery to convert their data into our own database. Then we built a bespoke Restful API that would retrieve and sort the correct information for customers to check themselves in onsite.
The digital transformations are now live and have created a smooth process for the customers and staff.
“Hiyield really did their best to understand our needs as a business, and they felt like an extension of our team.” – Chloe Hughes, Marketing Manager at The Wave
Our Process
Web app development FAQs
How much does a web app cost to build?
It depends on complexity, but Hiyield’s custom web app builds typically start from £10,000. An MVP to test an idea with real users sits at the lower end; a full platform with integrations, user accounts and billing costs more. Book a call, and we’ll give you an honest steer on scope and budget, with no surprises later.
How long does it take to build a web app?
It depends on what you’re building. An MVP can be in front of users in 6-12 weeks, while other projects will take longer. Hiyield gives you a realistic timeline up front, so we know the key milestones.
What is an MVP and do I need one?
An MVP (minimum viable product) is the simplest version of your idea that real users can try. It lets you test whether the idea works, learn from real behaviour and attract investment before committing to a full build. For new products, it’s usually the right place to start. For established businesses replacing an existing system, we’ll often go straight to a fuller scope.
What’s the difference between a web app and a native app?
Native apps are built for a specific platform, like iOS or Android, and installed on a device. Web apps run in the browser and work on any device with no install needed, which usually makes them faster and cheaper to build and easier to update. Hiyield builds both and will tell you which fits your idea. There’s more in our blog.
Can you replace a system we already use?
Yes. Hiyield builds custom web apps to replace spreadsheets, off-the-shelf tools that no longer fit and manual processes that slow teams down. We look at how your team actually works, what needs to connect to what and where the friction is, then build something that fits.
Do you only work with businesses in Cornwall?
No. Hiyield is based in Truro with teams in Bristol and London, and works with founders and organisations across the UK and beyond.
Industries
Climate Awareness
Community
Education
Financial
Leisure & Hospitality
Retail
Services
Tech
Explore our services
Discovery & UX Design
Hiyield’s Discovery & UX Design team go from research and definition to sketches and user-tested high quality prototypes, tailored to your unique vision, ensuring that each interaction provides a memorable user experience.
Development
Our Development team specialises in creating bespoke web and mobile solutions. We turn your ideas into efficient, scalable, and eco-friendly digital products.
Strategy
With Hiyield, it’s a partnership. Together, we build sustainable strategies, prioritising your growth and making certain our work together leaves a lasting positive mark.
Let’s get started!
Got a great web app idea? We can help you make it a reality. Book a call and tell us all about it.