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Mobile and web development for SMEs: PWA, responsive design and technology selection
Mobile and web development increasingly overlaps in modern projects: Progressive Web Apps (PWAs) combine browser reach with app-like behaviour; React Native and Flutter share codebases between mobile clients and web shells; server-side rendered Next.js delivers web applications with native-grade performance and strong SEO profile. This page supports the technology decision before contracting.
The first decision question is not the technology but the usage model: is the application primarily used at a desktop in office scenarios, mobile in field service, or both? Offline requirements, push notifications, device access (camera, GPS, sensors) and App Store distribution determine whether a web application is sufficient or a native/hybrid app component is necessary.
Accessibility (WCAG 2.1 AA) and responsive design are today not optional extras but regulatory requirements in many industries and a prerequisite for broad user acceptance. Retrofitting accessibility is significantly more expensive than building it in from the start.
PWA vs. native app vs. responsive web: decision matrix
A responsive web app is sufficient when: browser usage is the primary channel, no offline operation is needed, no deep device access is required and App Store presence is not a strategic goal. Advantage: one codebase, best SEO visibility, no store approval process.
A PWA makes sense when: offline capability, push notifications and an installable app experience are desired but store distribution should be avoided. PWAs work well on Android; iOS support has had historical limitations reduced with newer Safari versions.
Native or cross-platform app (React Native, Flutter) is necessary when: deep device access (Bluetooth, NFC, ARKit/ARCore, camera APIs), store distribution matters for the audience or native performance is a hard requirement. Cross-platform reduces development cost versus two native codebases with good coverage of common use cases.
Performance, accessibility and testing strategies
Core Web Vitals (LCP, CLS, INP) are measurable performance targets with direct impact on Google rankings and user experience. Main causes of poor scores: unoptimised images (LCP), layout shift from dynamic content (CLS) and heavy JavaScript tasks on the main thread (INP).
Accessibility testing includes automated checks (Lighthouse, axe-core), manual keyboard navigation tests and screen reader tests (NVDA, VoiceOver). Automated tools detect approximately 30–40% of accessibility problems; manual testing cannot be replaced.
Cross-browser and responsive testing should use real devices rather than only browser DevTools: touch interactions, rendering differences and performance on mid-range smartphones regularly diverge from the desktop simulator.
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