App development
for Cardiff businesses
Mantar Tech builds custom web and mobile apps for businesses in Cardiff and across Wales. UK-registered, fixed-price projects from £8,000. Remote-first delivery with the same quality you'd expect from a London agency — without London pricing.
Software development services for Cardiff
Web App Development
Custom web applications — B2B tools, SaaS dashboards, government-grade portals, media platforms. React, Next.js, Node.js. From £10,000.
Learn more →Mobile App Development
iOS and Android apps with React Native or Flutter. Consumer apps, public services and enterprise tools. From £12,000.
Learn more →Custom Software
Bespoke internal tools, process automation and data systems for Welsh SMEs and public sector bodies. From £10,000.
Learn more →Why location doesn't limit quality
How we work with Cardiff clients
We're remote-first — all delivery runs through video calls, sprint demos, Figma collaboration and shared project tools. Cardiff clients get the same process and team as clients in London or Manchester. No travel costs, no overheads passed on.
What the process looks like
- Week 1: Discovery call — scope, budget, timeline
- Week 2–3: Design sprint — wireframes, UI, architecture
- Week 4+: Iterative builds with weekly reviews
- Final: QA, staging, sign-off, live deploy
- Post-launch: 30-day support included
What does app development in Cardiff cost?
MVP / Simple App
£8,000–£20,000
8–12 weeks · Fixed price · Web or mobile
Business Platform
£25,000–£60,000
14–20 weeks · SaaS, dashboards, integrations
Complex Platform
£60,000+
6–12 months · Enterprise, marketplace, ERP
Why Cardiff businesses choose Mantar Tech
Cardiff's growing tech scene benefits from Welsh Government digital investment and a strong university partnership culture.
As one of the UK's fastest-growing tech hubs in Wales, the city has a strong base in fintech, public sector digital, media tech and e-commerce platforms. We have worked with businesses across these sectors — building platforms that are fast to launch, easy to maintain and built to grow.
How we work with Cardiff clients
All projects start with a free 30-minute discovery call. We define scope, timeline and a fixed price before any work begins. No hourly billing, no surprise invoices.
Our typical engagement for a Cardiff business:
- Week 1–2: Discovery, wireframes and technical specification
- Week 3–8: Development sprints with weekly updates
- Week 9–10: Testing, QA and client review
- Week 11–12: Launch and post-launch monitoring
You own 100% of the source code from day one. No vendor lock-in, no subscription fees to us after launch.
Coverage across Wales
We serve clients across Wales including Swansea, Newport and the Valleys — all work is delivered remotely.
Cardiff app development questions
Do you work with Welsh businesses?
Yes — we work with businesses across Wales including Cardiff and Swansea. Remote-first means location is never a barrier to getting the same quality team and process.
Can you build software for public sector or government clients?
Yes. We build secure, accessible software meeting WCAG 2.1 standards and UK Government Digital Service (GDS) guidelines. Cardiff has a significant public sector and Welsh Government digital presence we're familiar with.
How do I start a Cardiff app project with Mantar?
Fill in our contact form — what you're building, who uses it and your rough budget. We reply within 24 hours and can have a scoping call scheduled within 48 hours.
Do you integrate with Welsh public sector systems?
Yes. We integrate with NHS Wales digital systems, Welsh Government platforms and standard UK public sector API infrastructure. Integration scope is confirmed in the discovery phase.