App UX Research
Understand your users, their goals and what competitor apps get wrong.
Trusted by 150+ UK & International Businesses for Mobile App UI Design
Mobile App UI Design Agency in London
Beautiful, intuitive mobile app designs for iOS and Android that users enjoy and keep coming back to, day after day.
London app designers creating user-friendly app experiences, clickable prototypes and developer-ready design files.
Intuitive iOS and Android app design
Mobile app design that users love
01
App UX Design
User flows, journeys and wireframes designed around real mobile behaviour and one-handed use.
02
App UI Design
Polished, on-brand screens for iOS and Android that feel native, modern and genuinely enjoyable.
03
Clickable Prototypes
Interactive prototypes for usability testing, stakeholder demos and investor pitch meetings.
04
App Design Systems
Reusable components and styles that keep your app consistent as new features are added over time.
A clear app design process from research to handover
01
Research & Discovery
We study your users, goals, competitor apps and app store reviews before designing.
02
User Flows & Wireframes
Every screen and journey mapped out in wireframes, from onboarding to key tasks.
03
Visual App Design
Polished iOS and Android screens with consistent components, icons and motion.
04
Prototype & Test
Clickable prototypes tested with real users on real phones, then refined quickly.
05
Developer Handover
Organised Figma files, assets, specs and animations ready for developers to build.
Why mobile app design makes or breaks an app
Users decide very quickly whether to keep or delete an app. Confusing navigation, cluttered screens and slow onboarding lead to poor reviews and lost users, however useful the app might be. Great design is often the difference between an app people love and one they forget.
Great app design makes your app easy to learn and enjoyable to use. It lifts ratings and retention and gives iOS and Android developers a clear plan to build from.
- Easy to Use
- Better Retention
- Platform Ready
- Developer Friendly
Complete mobile app design services
User Flows & Wireframes
Plan every screen and user journey before any visual design begins.
iOS App Design
Designs that follow Apple's Human Interface Guidelines for iPhone.
Android App Design
Material Design-based Android screens that feel natural to users.
Cross-Platform App Design
Onboarding Design
Welcome flows that get new users to value quickly and keep them.
Clickable Prototypes
Interactive Figma prototypes for testing, demos and investor pitches.
Micro-Interactions & Animation
Subtle motion and touch feedback that make your app feel polished.
App Icon Design
Memorable app icons that stand out on home screens and app stores.
App Store Screenshots
Attractive store visuals that improve conversion and downloads.
App Design Systems
Reusable components, styles and guidelines for a growing app.
App Redesign
Refresh and improve existing apps with poor reviews or retention.
Ready to design an app people love?
Speak with our London app designers about an intuitive, beautiful mobile app design that users enjoy and developers can build.
Mobile app design expertise across key industries
Hospitality & Leisure
App designs for restaurants, hotels and venues with quick ordering, simple booking and rewarding loyalty experiences.
- Ordering flows
- Booking screens
- Loyalty cards
- Digital menus
- Push offer design
A London app design partner focused on quality and commercial results
Design Dev works with founders, product teams and established brands that want an app design users genuinely enjoy. Our UI/UX designers work side by side with our in-house iOS, Android and Flutter developers, so every design is beautiful, practical and ready to build.Expect clear communication, user-tested designs, organised Figma files and a focus on ratings, retention and real results.
150+
Projects delivered
5+
Years experience
UK+
London & worldwide
98%
Client retention
Research, design and testing for brands that need an app design that performs.
01
Users before screens
Real user needs and mobile habits shape every screen we design.
02
Designed to be built
Developer-ready files, specs and animations for a smooth build.
App design tools we work with
Figma
FigJam
ProtoPie
Framer
Adobe Illustrator
Adobe After Effects
Lottie
Principle
Maze
Material Design
Apple HIG
Zeplin
What clients say
Design Dev transformed our e-commerce platform. Their team was efficient, responsive, and delivered a stunning layout that doubled our conversion rate within a month.
Sarah Jenkins
Vauxhall Marketing - Shopify DevelopmentAn absolute pleasure to work with. They understood our brand identity perfectly and designed a clean, user-friendly SaaS platform that our clients love.
David Thorne
FluxGig - UI/UX DesignThe custom WordPress build is super fast and easy for our content editors to update. Outstanding attention to detail and SEO optimization.
Amara K.
Apsara Cosmetics - WordPress DevelopmentThey built a highly custom, secure medical inventory portal on-budget. Their engineering skills are top-tier.
Julian Reed
Upcycled Medical - Web App DevelopmentFrom logo creation to full visual guidelines, Design Dev gave our construction firm a modern and premium corporate look.
Emily Watson
Smart Build UK - Branding & DesignOur organic search traffic increased by 150% in three months. Their SEO team really knows their stuff.
Marcus Sterling
Supra Cycling - Search Engine OptimizationBrands we have worked with
Frequently Asked Questions
Yes. We design for both platforms, following Apple's Human Interface Guidelines and Google's Material Design where it matters, so your app feels at home on every phone.
Tell us about your project
Share your goals, timeline and requirements. Our London team will reply with a practical recommendation and estimate.
Development Center
Sialkot, Pakistan
2nd Floor, Yousaf Plaza, Opposite Mazeeo Sadar Bazar, Sialkot Cantt
+92 337 4905 313Project enquiry
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