E-commerce App Development | Custom Shopping Apps & Retail Solutions

Expert e-commerce app developers in Kent & London. We build custom shopping apps, marketplace platforms, and retail solutions that drive sales and deliver exceptional customer experiences.

We're e-commerce app development specialists based in Kent, serving retailers, brands, and marketplaces across London and the UK. With 20+ years of experience building shopping apps, food delivery platforms, and multi-vendor marketplaces, we understand what it takes to create mobile commerce experiences that convert browsers into buyers. From single-vendor retail apps to complex multi-vendor marketplaces, we deliver scalable e-commerce solutions that handle real-world trading at scale.

Whether you need a branded shopping app for your retail business, a food delivery platform, a fashion marketplace, or a B2B ordering system, we combine deep e-commerce expertise with proven mobile development capabilities. Our apps integrate seamlessly with payment gateways (Stripe, PayPal, Square), inventory management systems, shipping providers, and existing e-commerce platforms like Shopify, WooCommerce, and Magento. We build native iOS and Android shopping apps that customers love, with intuitive browsing, one-tap checkout, push notifications for abandoned carts, and loyalty programs that drive repeat purchases.

The UK e-commerce market is worth £120 billion annually, with mobile commerce accounting for 60% of online sales. We build shopping apps that capture this mobile-first market - from independent retailers to national brands and multi-vendor marketplaces.

Tinderhouse - At a glance

E-Commerce development

Everything you need to know about working with us.

Experience
20+ years | Retail & marketplace specialists
Investment
£30K-£200K depending on complexity
Timeline
16-40 weeks from concept to launch
Technologies
iOS, Android, Stripe, PayPal, inventory systems, shipping APIs
Specialties
Retail apps, marketplaces, food delivery, fashion, B2B ordering
Location
Canterbury, Kent & London
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Our app and website design and development expertises

AI integration specialists
Web service connections
Back-end database integration
Innovative UX/UI design

Our app and website solutions are helping businesses grow, be more efficient and sell more. Talk to us about your project. Call us on +44 (0)1227 811771.

Why choose Tinderhouse for e-commerce app development?

Here's why retailers, brands, and marketplace operators trust us with their mobile commerce platforms.

Proven E-commerce Success - We've built successful e-commerce applications, food delivery platform, retail shopping apps for independent brands, and B2B ordering systems processing thousands of transactions. We understand the complete e-commerce journey from product discovery and basket management to secure checkout, payment processing, order fulfillment, and customer retention. This isn't our first rodeo - we've solved real-world e-commerce challenges at scale.

Payment Integration Expertise - Secure payment processing is critical for e-commerce success. We integrate major payment gateways including Stripe for flexible payment processing and subscription billing, PayPal for trusted consumer payments, Apple Pay and Google Pay for one-tap checkout, Square for point-of-sale integration, and custom payment providers for specific requirements. We handle complex scenarios including split payments for marketplaces, subscription billing, payment holds for services, refund processing, and multi-currency support. Our implementations are PCI DSS compliant and handle security properly.

Inventory & Fulfillment Integration - E-commerce apps need real-time inventory management and order fulfillment. We integrate with inventory systems for stock level synchronisation, warehouse management systems for multi-location inventory, order management platforms for fulfillment workflows, shipping providers (Royal Mail, DPD, DHL, Evri) for real-time rates and tracking, and dropshipping systems for third-party fulfillment. Our apps handle complex scenarios including product variants, stock reservations, backorder management, and automated restock notifications.

Marketplace & Multi-Vendor Platforms - Building marketplaces requires additional complexity beyond single-vendor stores. We develop seller onboarding and verification systems, commission management and split payments, individual seller dashboards and analytics, rating and review systems, dispute resolution workflows, and seller performance tracking. Whether you're building the next Etsy, a local services marketplace, or a B2B trade platform, we handle the technical complexity of connecting multiple sellers with buyers at scale.

Product Discovery & Search - Helping customers find products quickly drives conversion. We implement smart search with autocomplete and typo tolerance, advanced filtering by category, price, brand, and attributes, product recommendations based on browsing and purchase history, recently viewed items and wish lists, barcode scanning for quick product lookup, and visual search using image recognition. Our search implementations learn from user behavior to surface products customers actually want to buy.

Mobile-First Shopping Experience - Shopping on mobile requires different UX than desktop. We design touch-optimised product galleries with pinch-to-zoom, seamless basket management with floating cart indicators, one-tap checkout reducing friction, guest checkout options for speed, saved payment methods for returning customers, address autocomplete for faster delivery details, and real-time delivery cost calculation. Every interaction is optimized to reduce abandonment and increase completion rates.

Abandoned Cart Recovery - Most mobile shoppers abandon carts before completing purchase. We implement push notifications for cart reminders with personalised messaging, email sequences for multi-touch recovery, special offers to incentivise completion, saved carts that persist across devices, and recovery tracking to measure effectiveness. Our clients typically recover 15-30% of abandoned carts through intelligent notification strategies.

Customer Retention & Loyalty - Acquiring customers is expensive; retention drives profitability. We build loyalty programs with points, tiers, and rewards, personalised recommendations based on purchase history, wish lists and saved items for easy re-purchase, subscription services for recurring revenue, exclusive app-only offers and early access, referral programs for customer acquisition, and push notifications for new products and sales. These features turn one-time buyers into repeat customers.

Analytics & Business Intelligence - Understanding customer behaviour drives growth. We implement conversion funnel tracking showing where customers drop off, product performance analytics revealing bestsellers and slow movers, customer lifetime value calculations, basket abandonment analysis, traffic source attribution, and custom reports for business-specific KPIs. Real-time dashboards give you complete visibility into your mobile commerce performance.

Platform Integration - Many businesses already have e-commerce platforms. We build native mobile apps that integrate with Shopify for product catalog and order sync, WooCommerce for WordPress-based stores, Magento for enterprise e-commerce, BigCommerce for cloud platforms, and custom e-commerce systems via APIs. Your mobile app becomes a native channel alongside your website, sharing inventory, orders, and customer data seamlessly.

Food Delivery & Quick Commerce - Food delivery and rapid commerce require specialised features. We build real-time order tracking with driver location, estimated delivery time calculations, kitchen display systems for order management, driver dispatch and routing, contactless delivery options, scheduled ordering for future delivery, and dietary filters and allergen information. 

Fashion & Apparel Specialisation - Fashion retail has unique requirements. We implement size guides and fit recommendations, virtual try-on using AR technology, style recommendations based on preferences, colour and pattern filtering, outfit building and coordination, seasonal collection launches, and integration with fashion-specific inventory systems. We understand fashion customers expect highly visual, inspirational shopping experiences.

B2B E-commerce & Wholesale - Business-to-business commerce differs from consumer retail. We build customer-specific pricing and catalogs, bulk ordering and quick reorder functionality, approval workflows for large purchases, credit account management, custom payment terms (net 30, 60, 90), rep login and order placement on behalf of customers, and integration with ERP systems. B2B buyers need efficiency; we deliver powerful tools that speed up reordering and reduce admin.

Subscription & Recurring Revenue - Subscription models drive predictable revenue. We implement flexible subscription management (weekly, monthly, annual), easy plan switching and upgrades, skip or pause delivery options, subscription box customization, billing date management, failed payment recovery, and subscriber retention analytics. Whether you're selling meal kits, beauty boxes, or B2B supplies, we handle recurring billing complexity.

Stock Notifications & Pre-orders - Out-of-stock products still represent demand. We build back-in-stock notification systems, pre-order functionality for upcoming products, waitlists for limited editions, automatic purchase when restocked, and inventory forecasting based on demand signals. These features capture sales you'd otherwise lose while building anticipation for new products.

Social Commerce Integration - Social platforms drive product discovery. We integrate Instagram Shopping for shoppable posts, TikTok product links, Facebook Marketplace connectivity, user-generated content galleries, social sharing for products and purchases, and influencer collaboration tools. Your products meet customers where they already spend time.

Security & Compliance - E-commerce requires robust security. We implement PCI DSS compliant payment processing, GDPR-compliant data handling, secure authentication including biometric login, fraud detection and prevention systems, SSL encryption throughout, and regular security audits. We protect your customers' data and your business reputation.

Proven Track Record - Tinderhouse has 20+ years of experience building e-commerce solutions. We've delivered retail apps processing millions in sales, marketplace platforms connecting hundreds of sellers with thousands of buyers, food delivery systems handling peak demand, and B2B ordering platforms streamlining wholesale operations. Learn more about why UK businesses trust Tinderhouse for their e-commerce development needs.

Our approach to e-commerce app development

Discovery & Strategy

We start by understanding your products, customers, and business model. Through market research and competitor analysis, we define your unique value proposition, identify target customer segments, map the complete shopping journey from discovery to repeat purchase, establish technical requirements for payments and fulfillment, and plan integration with existing systems. E-commerce apps succeed when they're built around real customer behavior, not assumptions.

Information Architecture & Product Catalog

We plan how customers will discover and navigate your products through category structure and taxonomy, product attribute definition (size, color, material, etc.), variant management strategy, search and filtering capabilities, and catalog organisation. Well-structured product information drives both findability and conversion. We ensure your catalog scales as your product range grows.

E-commerce UX Design

Shopping app design directly impacts conversion rates. We design product listing pages optimized for browsing, product detail pages that sell benefits not just features, streamlined basket experiences with clear totals and delivery costs, frictionless checkout reducing steps to purchase, account creation that doesn't block purchase, and post-purchase experiences that encourage reviews and repeat business. Every screen is tested with real users to maximise completion rates.

Payment & Security Implementation

Secure payment processing requires careful implementation. Our development phase integrates payment gateways with tokenization for security, implements 3D Secure authentication where required, handles payment failures gracefully with retry logic, processes refunds and partial refunds, manages saved payment methods securely, and implements fraud detection rules. We test payment flows exhaustively across different scenarios, amounts, and payment methods.

Inventory & Order Management

Real-time inventory and order processing prevents overselling and enables efficient fulfillment. We integrate with your inventory management system for accurate stock levels, implement stock reservation during checkout, sync orders to fulfillment systems, track order status from placed to delivered, handle returns and exchanges, and manage stock across multiple warehouses or locations. Your backend systems stay synchronized with customer-facing app experiences.

Testing & Conversion Optimisation

E-commerce apps require rigorous testing before launch. We conduct payment flow testing with real transactions in sandbox mode, load testing to handle peak shopping periods, abandoned cart testing and recovery, cross-device testing (customers switch between phone and tablet), accessibility testing for inclusive commerce, and A/B testing of checkout flows. We optimise conversion funnels before launch, not after.

Launch & Marketing Integration

We coordinate complete e-commerce launches including App Store and Google Play submission with retail-specific assets, payment provider activation and compliance verification, analytics implementation for conversion tracking, push notification infrastructure for marketing, app indexing for product discovery via search, and deep linking from marketing campaigns. Your launch includes everything needed to drive downloads and first purchases.

Growth & Optimisation

Post-launch, we focus on increasing revenue per user through conversion rate optimisation based on analytics, A/B testing of features and flows, personalisation engine refinement, notification strategy optimisation, seasonal feature releases (Black Friday, Christmas), and retention program enhancements. E-commerce is iterative; we continuously improve performance based on real customer behavior and sales data.

Our e-commerce app development credentials

  • 20+ years experience: Building e-commerce and retail solutions since early online shopping
  • Payment expertise: Stripe, PayPal, Apple Pay integration across multiple platforms
  • Marketplace experience: Multi-vendor platforms with complex commission structures
  • Retail sector knowledge: Fashion, food, home goods, B2B wholesale
  • Peak trading proven: Apps that handle Black Friday, Christmas, and flash sale traffic
  • UK-based team: Canterbury, Kent and London, serving retailers nationally and internationally

Frequently asked questions

E-commerce app development in the UK typically costs £30,000-£200,000 depending on complexity and features. Basic single-vendor shopping apps cost £30K-£80K, comprehensive retail apps with loyalty and personalisation cost £80K-£120K, food delivery platforms cost £60K-£100K, and multi-vendor marketplace platforms cost £100K-£200K+.

Cost factors include platform coverage (iOS and Android adds 60% vs single platform), payment integration (basic Stripe £8K, multiple gateways £15K+, marketplace split payments £20K+), inventory integration (simple API £10K, complex ERP £25K+), delivery features (basic shipping £8K, real-time tracking £15K, driver dispatch £25K+), and custom features (loyalty programs £12K, subscriptions £15K, AR try-on £20K+).

Ongoing costs for payment processing fees (1.5-2.9% + 20p per transaction), hosting and infrastructure (£200-£2K/month depending on traffic), maintenance and updates (£1K-£5K/month), and marketing features range from £2K-£8K monthly. We provide transparent fixed-price quotes after understanding your product catalog, business model, and integration requirements.

E-commerce app development timelines vary by complexity and integrations. Basic shopping apps take 16-24 weeks, comprehensive retail apps with loyalty and personalisation take 24-32 weeks, food delivery platforms take 20-28 weeks, and multi-vendor marketplace platforms take 32-48 weeks.

Our process includes 3-4 weeks discovery including business model validation and competitive analysis, 3-4 weeks UX design focused on conversion optimization, 12-24 weeks development including payment integration, inventory sync, and checkout flows, 2-4 weeks payment and security testing including PCI DSS compliance, 2-3 weeks load testing for peak shopping periods, 1-2 weeks App Store submission and payment provider approval, and 2 weeks launch support including initial order monitoring.

Add 6-12 weeks for marketplace platforms requiring seller onboarding, 4-8 weeks for complex ERP integrations, and 4-6 weeks for subscription billing systems. Our agile approach delivers working features every two weeks, allowing early testing of critical shopping flows.

We integrate all major payment gateways and processors including Stripe for flexible payment processing with excellent developer tools and subscription support, PayPal for trusted consumer payments and PayPal Credit options, Apple Pay for one-tap checkout on iOS devices, Google Pay for Android one-tap payments, Square for retail businesses with POS integration, Worldpay for enterprise payment processing, Sage Pay (Opayo) for UK-focused businesses, and custom payment providers for specific requirements or regions.

We also handle alternative payment methods including Klarna and Clearpay for buy-now-pay-later, direct bank transfers, wallet systems for stored value, cryptocurrency payments where required, and international payment methods for global commerce. Our implementations are PCI DSS compliant, handle 3D Secure authentication, process refunds and disputes, manage failed payment retry logic, and support subscription billing with flexible plans.

For marketplaces, we implement Stripe Connect for automated split payments between platform and sellers with commission management and seller payout schedules.

Yes, we specialise in building native mobile apps that integrate with existing e-commerce platforms. We connect with Shopify via their API for product sync, orders, and customers, WooCommerce through REST API for WordPress stores, Magento for enterprise e-commerce platforms, BigCommerce for cloud-based stores, Salesforce Commerce Cloud for enterprise retailers, and custom e-commerce systems via API integration.

Integration includes two-way product catalog sync with prices and inventory, order creation and status updates, customer account synchronisation, loyalty points and rewards sync, promotion and discount code application, and real-time stock level checking. The mobile app becomes another sales channel alongside your website, sharing the same backend data.

We can also build standalone e-commerce apps with custom backend systems if you don't have an existing platform or need specialised functionality beyond standard platforms. Our team advises on the best approach based on your requirements, scale, and future growth plans.

Yes, we build multi-vendor marketplace platforms connecting multiple sellers with buyers. Marketplace features include seller onboarding and verification workflows, individual seller dashboards for inventory and order management, commission management and split payment processing, product approval and quality control systems, seller performance analytics and ratings, buyer review and rating systems, dispute resolution and customer service tools, and seller payout scheduling and reporting.

We handle complex marketplace scenarios including different commission rates per category or seller tier, promotional tools for sellers, featured listings and advertising, seller subscription tiers with different capabilities, and multi-currency support for international marketplaces. Payment processing uses Stripe Connect or similar platforms to automatically split payments between marketplace and sellers while handling commission calculations.

Marketplace apps typically cost £100K-£200K and take 32-48 weeks to build due to the dual-sided platform complexity, but create powerful network effects once established.

We integrate with inventory management systems to keep stock levels synchronized in real-time. Integration approaches include direct API integration with your inventory system for instant stock updates, periodic sync with configurable intervals for systems without real-time APIs, webhook notifications when stock changes occur, stock reservation during checkout to prevent overselling, and multi-warehouse inventory across locations.

We handle complex inventory scenarios including product variants (size, colour, material) with individual stock levels, backorder management for out-of-stock items, pre-order functionality for upcoming products, low stock warnings and automatic notifications, stock notifications when items return to availability, and bundle products that consume multiple SKUs.

For businesses without existing inventory systems, we can build lightweight inventory management as part of the app backend, suitable for smaller catalogs (under 1,000 SKUs) with basic stock tracking needs.

Yes, we build food delivery and quick commerce platforms. Food delivery features include real-time order tracking showing preparation and delivery status, estimated delivery time calculations based on location and kitchen capacity, kitchen display systems for order management, driver dispatch and route optimisation, live driver location tracking on customer apps, contactless delivery options, scheduled ordering for future delivery, dietary filters and allergen information, and modifiers for customisation (no onions, extra sauce, etc).

Quick commerce features for groceries and convenience include ultra-fast delivery promises (15-30 minutes), location-based inventory showing nearby dark store stock, substitution handling for out-of-stock items, ambient/chilled/frozen delivery requirements, and delivery slot management.

Food delivery apps typically cost £60K-£100K and take 20-28 weeks including delivery tracking, kitchen systems, and driver apps. The business model requires careful planning around delivery radius, driver economics, and kitchen capacity.

Yes, customer retention features are critical for e-commerce profitability. We build points-based loyalty programs with earn and burn mechanics, tiered loyalty levels (silver, gold, platinum) with increasing benefits, reward redemption at checkout, exclusive member offers and early access, referral programs incentivising customer acquisition, birthday rewards and anniversary bonuses, and loyalty analytics tracking program effectiveness.

Additional retention features include wish lists and saved items for easy re-purchase, purchase history with quick reorder functionality, personalised recommendations based on browsing and buying patterns, abandoned cart recovery via push notifications and email, subscription services for recurring revenue, app-only exclusive products and offers, and push notifications for back-in-stock items, sales, and new products.

We implement retention features progressively - basic programs cost £12K-£20K, while sophisticated personalisation engines with machine learning cost £30K-£50K. The ROI on retention features typically exceeds acquisition spending within 6-12 months.

Mobile conversion requires different optimization than desktop. We implement one-tap checkout reducing friction to bare minimum, guest checkout options avoiding forced registration, Apple Pay and Google Pay for instant payment, autofill for delivery addresses and payment details, progress indicators showing checkout steps clearly, basket visibility with floating cart button, real-time delivery cost calculation before checkout, clear return policies and security badges building trust, and abandoned cart recovery with personalised messaging.

Conversion optimisation continues post-launch through A/B testing different checkout flows and button placements, funnel analysis identifying drop-off points, session recording understanding user behaviour, heatmaps showing interaction patterns, and iterative improvements based on data. We typically see 15-30% conversion rate improvements through systematic optimisation over 3-6 months.

Product page optimisation includes high-quality images with zoom, customer reviews and ratings, size guides and fit information, related products and cross-sells, clear stock availability, and prominent add-to-basket buttons. Every element focuses on answering customer questions and removing purchase barriers.

Successful e-commerce apps balance great user experience with robust business operations. Critical success factors include fast product discovery with smart search and filtering, seamless checkout with minimal steps, secure payment processing with multiple options, accurate inventory preventing overselling disappointment, reliable order fulfillment with tracking transparency, and excellent customer service for issues and returns.

From our experience, adoption depends on clear value proposition (why download vs website), exclusive app benefits (offers, early access, better experience), smooth performance (no crashes during checkout), trustworthy security (customers trust you with payment), and effective marketing driving awareness and downloads. Failed e-commerce apps typically suffer from complex checkout flows, payment failures, inaccurate inventory, or trying to replicate website rather than optimising for mobile.

Focus on your core shopping experience first, ensure checkout works flawlessly, test extensively with real transactions, and add sophisticated features (personalisation, AR, social) only after fundamentals are solid. E-commerce apps succeed when they make buying easier than any other channel, not just different.

Some of our latest work

Check out what our clients say about working with Tinderhouse.