Mobile App Development Services UK | Custom iOS & Android

Mobile App Development Services for iOS & Android

At SMi Marketing, we build mobile apps that solve problems, streamline experiences, and grow businesses. Whether you're a startup building your MVP or an established company expanding into mobile, we offer custom mobile application development tailored to your goals and budget.

From idea to app store, our UK-based team delivers full-cycle mobile app development services built for performance and scale.

The Answer to All

Our Mobile App Services

Custom Web Design & Development Services in the UK.

Custom Mobile Application Development

BeautifulWe create intuitive, scalable apps that align with your users and business needs. From eCommerce mobile app development to enterprise platforms, we deliver feature-rich apps that perform.

iOS, Android, and cross-platform solutions
Payment gateways, user accounts, push notifications
Backend integration and API development

App Strategy & Prototyping

We collaborate with you to outline functionality, map journeys, and visualize your app — long before coding begins.

Interactive wireframes and flows
Market-fit feature planning
Market-fit feature planning

UI/UX Design for Mobile

Great design drives retention. Our team blends aesthetics with logic for seamless mobile interaction.

Custom UI based on brand identity
Mobile-first, accessible interfaces
Work with a best UI/UX design company for beautiful and functional design

Development, Testing & Deployment

We follow agile sprints, continuous testing, and App Store optimization to launch stable, fast apps users love.

Unit testing and performance audits
OS-specific refinement
App Store and Play Store submission

Retail App Development Services

We specialize in building apps for retail brands, giving your customers smooth shopping experiences wherever they go.

Inventory syncing and real-time updates
Loyalty features and push promotions
Fully custom UI for branded user experiences

Support & Maintenance

Stay ahead of platform updates and user feedback. We provide continuous support after launch.

OS compatibility
Crash monitoring and fixes
Feature rollouts and upgrades

Helping businesses reach their clients

Proactive Approach and Agile Process that Exceed Expectations

Consulting & Strategy

The SMI provide a free consultation to clients, helping them understand innovation and technologies they can utilize to make a robust mobile app for their business. We start by conducting in-depth research on market trends to get a success-oriented strategy.
Design & User Experience

By hiring SMI you are opening a great growth opportunity for your business. We offer customized digital tools and an omnichannel experience that perfectly meets your customer’s needs. Our mobile application includes customize, iOS, Android and cross-platform apps.
Implementation & Delivery

The most crucial step comes when we bring the design to life. Our technical app developers play an essential role by creating a result that exceeds your expectations. We use our efficiency and agile work approach to deliver on time!
QA & Optimization

The SMI makes sure that the final product meets the quality expectations. We conduct functional testing, source code quality and performance testing, to assure that your applications hold no bugs. We use performance insights for future optimization.

Workflow

Our All-Inclusive Process!

Advertising

From paid search advertising to display, there’s a wide array of options when deciding which approaches to advertising you want to equip to your arsenal. Your objectives, budget and target demographics will greatly influence how you approach paid advertising and measure success.

Copywriting

Although an image lead approach may look fantastic, words are still exceptionally important, particularly when trying to build any kind of visibility online. Copywriting is often used to promote, educate and engage an audience, but it doesn’t need to be packed with sales messages to be effective.

Branding

Your customers aren’t just buying a product or service, they’re also buying into your brand so consistency is key. In order to inspire customer loyalty and build familiarity, there must be continuity across all areas of the brand, without distorting it.

Web Design

Encompassing a whole range of disciplines, web design is overall the creation and optimisation of your website through visual and functionality development which is aligned with your brand and offers an optimum user experience.

our testimonials

Hear it From the Ones that Loves Our Work

My consultation call was long, where they asked me a lot of questions. At first, I thought they were maybe confused. But the final design left me astonished. The design perfectly fits my business niche. It was sleek and straightforward; it was more than what I expected. Highly recommend their services.

Becky W

Brown Bacons

our testimonials

Hear it From the Ones that Loves Our Work

They have a creative team of designers that work with complete dedication on your project. I love how they meet the deadlines that they committed. Moreover, their support team will assist you round the clock. Worth your Investment.

Terrance Cole

Jimmy’s Chicky Chip

our testimonials

Hear it From the Ones that Loves Our Work

I run a small business and was looking for web design services that can fit my budget. And after a long search, I found The SMI, their packages were reasonable and fit my budget well. Highly recommended to Small business owners.

Sarah Miller

Dairy Dose

OUR SERVICES