--- title: "Web and mobile" description: "Web applications, native iOS and Android, cross-platform mobile, design systems and accessibility, built and released through automated pipelines." url: https://www.expandware.com/services/engineering/web-and-mobile/ section: "Services" topics: ["Engineering", "React", "Next.js", "React Native", "Flutter"] publisher: "Expandware Private Limited" --- # Web and mobile Web applications, native iOS and Android, cross-platform mobile, design systems and accessibility, built and released through automated pipelines. Web and mobile applications people choose to use. React Native where it serves the product, native iOS and Android where it does not: one codebase decision, made on engineering grounds rather than fashion. We build web and mobile applications with performance budgets, accessibility and security in the pipeline from day one, and release them through app stores and continuous delivery with monitoring that shows how they behave on real devices. Where it usually starts: - Customers complain that the app is slow, or that it crashes on some devices. - A web application fails accessibility requirements. - Separate iOS and Android codebases are drifting apart. - A new customer-facing application has to launch on a fixed date. What is included: - Web applications: React and Next.js applications with performance budgets enforced in the pipeline. - Native mobile: Swift and Kotlin where the product needs native capability. - Cross-platform mobile: React Native or Flutter where one codebase serves both platforms. - Design systems: Components and guidelines shared across products. - Accessibility: WCAG 2.2 AA built in and tested automatically. - Release management: App store submission, staged rollouts and crash monitoring. Where it sits: Web and mobile applications are the production surface customers see in the engineering architecture, built and released through the same pipeline and watched in production like every other service. Decisions to settle early: - Native or cross-platform. Cross-platform serves both platforms from one codebase; native suits products that need deep device features. The product decides. - Rebuild or stabilize. Stabilizing an existing app is cheaper when its foundations are sound. A rebuild is justified when they are not. - Design system or one-off screens. A design system pays back across products and keeps accessibility consistent. Small products may start simpler. How the work runs: Discover, Users, journeys and constraints. Design, Prototypes tested with real users. Build, Shipped in small releases. Measure, Performance and crashes on real devices. How it is bought: - A fixed-fee assessment: We review crash reports, analytics, accessibility and the current codebases, and test key journeys. You receive the findings and a fixed price for the build or rebuild. - A fixed-price build: Design, build and release of the applications in scope, with performance budgets and accessibility tests in the pipeline, at a fixed price. - Running it afterwards: After launch, releases and monitoring can be run by your team or by us on a retainer. Worked example, an app that crashed on older phones. Say a utility company's customer app is reviewed badly for crashes and slow screens, its iOS and Android versions behave differently, and its web portal has failed an accessibility audit. - Discover: We study crash reports, reviews and analytics to find the journeys that fail most, such as submitting a meter reading. - Design: Those journeys are redesigned and tested as prototypes with real customers, including people who use screen readers. - Build: The app is rebuilt in React Native on a shared design system, with performance budgets and accessibility tests in the pipeline. - Release: New versions roll out in stages, and crash and performance monitoring on real devices decides whether each release continues. At the end, iOS and Android behave the same, the main journeys work for every customer, and a bad release is caught in its first stage rather than in the reviews. (An illustration, not a client account.) What you have at the end: - User journeys and prototypes: The key tasks users perform, mapped, and tested as prototypes before they are built. - Design system components: Reusable, accessible components and the guidelines for using them across your products. - Web and mobile source code: The applications' code in your repository, with their build and release configuration. - Accessibility test reports: Automated and manual WCAG test results, with the issues found and how they were fixed. - Release pipeline and monitoring: Automated builds and store releases, with performance and crash monitoring on real devices. Standards and platforms worked with: React, Next.js, React Native, Flutter, Swift, Kotlin, WCAG 2.2, Core Web Vitals, App Store, Google Play. Where it goes wrong, and what we design out: - Choosing the stack on fashion. Native or cross-platform is an engineering decision. It is made on the product's needs. - Testing on the latest phones only. Customers use older devices too. Testing and monitoring cover what is actually in use. - Accessibility checked at the end. Fixing accessibility after launch is slow and expensive. It is built into components and tested on every change. What it changes: - Fast on real devices. Performance budgets keep pages and screens quick on the devices customers actually use. - Usable by everyone. Accessibility is built in, not retrofitted after a complaint. - Releases without drama. Staged rollouts and monitoring catch problems before every user sees them. How you will know it is working: - Crash rates fall on the devices customers use. - Key journeys work with a screen reader. - iOS and Android behave the same way. - Bad releases are stopped at their first stage. Who you work with: - Web and mobile lead. Owns architecture, releases and performance budgets. - Engineers. Build web, iOS and Android applications in your repository. - Product designer. Designs journeys and tests them with real users, including assistive technology users. What we need from you: - Access to app store accounts, analytics and crash reports. - Users for research and testing. - Brand guidelines and any existing designs. - A product owner for priority decisions. Common questions: Q: Native or cross-platform? A: Cross-platform where it serves the product, native where performance, device integration or platform conventions demand it. The choice is made on engineering grounds and written down with its reasons. Q: Do you design as well as build? A: Yes. Research, prototyping, interface design and design systems are part of the work, so design and engineering decisions are made together. Q: How do you handle app store releases? A: Through automated pipelines: builds, tests, signing and submission, with staged rollouts so a problem reaches a small share of users before it can reach all of them. Q: Will the app meet accessibility law? A: We build to WCAG 2.2 AA, which underpins accessibility requirements in many jurisdictions, including the European Accessibility Act, and test with automated tools and with assistive technology. Q: What are Core Web Vitals? A: Google's measures of real-world web experience: how quickly the main content loads, how quickly the page responds to input, and how stable the layout is while it loads. They affect search ranking, and more importantly they track what users feel, so we set budgets for them in the pipeline. Q: Can you take over an existing app? A: Yes. We review the code, build setup, dependencies and store accounts first, then stabilize what is there before adding features. Sometimes the review shows that a rebuild is cheaper, and we say so, with the reasons. Q: What is a design system? A: A shared library of components, styles and guidelines used across products, so interfaces look and behave consistently and accessibility is built once into each component rather than into each screen. It also speeds delivery, because teams assemble screens rather than redrawing them. Q: How do you test apps on real devices? A: With physical devices for the models your customers use most and device cloud services for wider coverage, alongside automated tests in the pipeline. Monitoring after release then shows how the app behaves on every device in use, not only the ones we tested. Often paired with: Software and product engineering, DevOps and SRE, Application and API integration. --- Canonical page: https://www.expandware.com/services/engineering/web-and-mobile/ Site index for machines: https://www.expandware.com/llms.txt Full site text: https://www.expandware.com/llms-full.txt Expandware Private Limited. Inquiries: solutions@expandware.com, +92 (333) 32 11011.