FinTech-grade solutions for London's digital economy. We build custom mobile apps for iOS and Android, native where performance demands it and React Native where a shared codebase pays for itself. Every engagement covers the parts that decide whether an app survives launch: an architecture that can take a second feature, analytics you can act on, store submission handled for you, and a maintenance path once real users arrive. No offshore handoff — the people who scope your app are the people who build it.
London is one of the world's leading financial centers and a large market for fintech, media and professional services. Products here follow UK GDPR and the Data Protection Act 2018, and financial promotions, including crypto, fall under rules set by the Financial Conduct Authority.
Cross-channel expertise serving London's position as Europe's largest FinTech hub. FCA-compliant development for banking, insurance, and Open Banking platforms.
Tech City / Silicon Roundabout: Shoreditch, Canary Wharf, King's Cross
Every Mobile App Development project in London is built with full compliance to local and international regulatory frameworks.
Every Mobile App Development project we deliver in London includes these enterprise-grade features, customized for Greater London's specific market requirements.
Swift and Kotlin where native matters, React Native where it does not, decided on your requirements rather than our preference.
The team that scopes your app writes it. No junior handoff after the contract is signed, and no offshore subcontracting.
A written scope and a fixed price per phase, so the number you approve is the number you pay.
App Store and Play Store listings, screenshots, privacy manifests and Data Safety forms, review responses and resubmissions.
Instrumented before launch, not after, so the first week of real usage tells you something you can act on.
OS upgrades, dependency patches, store policy changes and bug fixes under a monthly agreement rather than ad hoc invoices.
We use industry-leading technologies proven at scale by the world's top companies. Our stack is optimized for Greater London's infrastructure and regulatory requirements.
A proven, transparent development process refined through 100+ successful projects. Every milestone is tracked and communicated in your timezone (Europe/London). Here's an inside look at how we deliver Mobile App Development projects.
Every Mobile App Development project meets these measurable quality benchmarks before delivery. These aren't aspirational goals — they're contractual guarantees.
Automated unit, integration, and E2E tests cover all critical paths.
Performance, accessibility, best practices, and SEO all score above 90.
Server response time optimized through caching and edge computing.
LCP, FID, and CLS all within Google's recommended thresholds.
Guaranteed uptime with automated failover and disaster recovery.
SSL Labs A+ rating with strict CSP, HSTS, and security headers.
Real results from real clients in the Greater London market. Each project demonstrates our expertise in Mobile App Development with measurable business outcomes.
We apply industry-specific standards and compliance requirements to every Mobile App Development project in Greater London. Here's how we tailor our approach for each sector.
End-to-end encryption, BAA agreements, audit logging, and PHI access controls.
HL7 FHIR integration for seamless data exchange with EHR systems.
Telehealth, appointment scheduling, and patient portal integration.
Here's the specific process we follow for Mobile App Development projects, with timelines adjusted for London's market and working patterns.
Feature list, technical constraints, integration audit and a written fixed-price estimate before any code.
User flows, screen designs and a clickable prototype you can put in front of real users before development starts.
Two-week sprints with a working build at the end of each, real-device testing, and TestFlight or internal-track betas.
Store submission, launch monitoring, crash triage and a 30-day post-launch window included.
Transparent pricing with no hidden fees. All prices are in GBP and include UK GDPR & FCA Regulations compliance.
Average project budget in London: £50,000 – £600,000
8-10 weeks
12-18 weeks
20-30 weeks
Every Mobile App Development project includes a comprehensive set of deliverables designed for long-term success in the London market.
We're not just another agency. Here's what sets us apart in the London market.
From startups to Fortune 500s, we've shipped products across FinTech, Insurance, Media, and more.
Offices and partnerships across 13 cities. Deep understanding of London's regulatory landscape and business culture.
Every project leverages AI where it creates measurable value — from intelligent automation to predictive analytics.
UK GDPR & FCA Regulations compliance built into every project from day one. No shortcuts.
Real-time project dashboards, weekly demos, and direct Slack access to your engineering team.
85% of clients continue working with us after initial project. We grow with your business.
Londoners use apps for nearly everything: transport, banking, food, fitness, booking a barber. That means your app competes for space on phones already full of polished products, and people delete anything that wastes their time. Before any build, it is worth being clear about the one job your app does better than a mobile website.
Platform and policy decisions come next. The Apple App Store and Google Play each have review rules, and health, finance, gambling and children's apps face extra scrutiny. In the UK, an app collecting personal data needs a privacy notice and lawful basis under UK GDPR, and services likely to be used by children must follow the ICO's Age Appropriate Design Code. Apps with user generated content or messaging should check whether the Online Safety Act brings duties on them. Payments for digital goods inside the app usually go through the stores' billing, which affects pricing.
Budget is shaped by the number of screens, offline needs, real time features such as chat or tracking, integrations with your back office, and whether you build natively or cross platform. Ask a provider which approach they recommend for your case and why, how they handle store submissions and rejections, what analytics they will set up, and who maintains the app when iOS and Android release their yearly updates. Frenchy Digital scopes a first release small enough to learn from.
Related project
The Corner: A Coach Dashboard Built on a Fighter's ConsentThe Corner is the coach app for Fighter Cut, built with Capacitor for iOS and in TestFlight testing; the client's location is not stated in the case study.
This is our own list, and we rank ourselves first. The other studios each show an office in or near London on their own website and are worth a call if you are comparing mobile app development providers.
Our pick, for obvious reasons. See the case studies and judge the work for yourself.
Digital product studio launching digital experiences for 20 years.
Designs and builds AI-native digital products, with over 300 products delivered per its site.
Digital product consultancy; reimagined the London Business School alumni digital experience.
Mobile specialists helping engineering leaders deliver mobile apps at scale.
Answers to common questions about Mobile App Development for London businesses.
Complement your Mobile App Development with these related services, all available in London with the same quality standards and compliance guarantees.
We offer Mobile App Development across our global network of offices and partnerships. Each location has dedicated expertise in local market requirements and regulatory compliance.
Understanding the return on your Mobile App Development investment is critical. Here's how our London clients typically measure success and the results they achieve.
Based on our portfolio of London projects, clients typically see full ROI within 4-8 months of launch. The Greater London market's strong demand for digital solutions means Mobile App Development investments generate measurable returns quickly when executed with the right strategy and technology stack.
Our engineering team follows battle-tested architecture patterns optimized for Greater London's infrastructure and regulatory requirements.
Every Mobile App Development project in London is architected for horizontal scaling with containerized microservices, auto-scaling groups, and CDN-distributed assets.
Security is non-negotiable in London's regulatory environment. We implement defense-in-depth with UK GDPR & FCA Regulations compliance baked into every layer.
We target sub-200ms response times and 90+ Lighthouse scores for all London deployments through multi-layer performance engineering.
Data management in London requires careful attention to UK GDPR & FCA Regulations compliance while maintaining high performance.
From Tech City / Silicon Roundabout: Shoreditch, Canary Wharf, King's Cross startups to FinTech enterprises, our Mobile App Development expertise has earned the trust of organizations across Greater London.
"Frenchy Digital delivered our Mobile App Development project on time and exceeded every expectation. Their understanding of the London market and UK GDPR & FCA Regulations compliance saved us months of research."
"What sets Frenchy Digital apart is their technical depth combined with genuine understanding of our business. They didn't just build a solution — they became strategic partners in our digital transformation."
Join 100+ businesses in Greater London that trust Frenchy Digital for their digital transformation. Get a free consultation and custom project proposal tailored to London's market.