Progressive Web App Development
Progressive web apps combine the reach of the web with the experience of native mobile apps. Anubiz Labs builds PWAs that load in under two seconds, work without an internet connection, send push notifications, and install directly from the browser — no app store approval process, no 30 percent commission, no separate codebase to maintain.
Need this done for your project?
We implement, you ship. Async, documented, done in days.
Why Progressive Web Apps Win
PWAs eliminate the friction between your web presence and your mobile experience. Users do not need to visit an app store, download a 50MB binary, or create an account before they can engage with your product. They visit your URL, interact immediately, and add your app to their home screen when they are ready — all with a single tap.
The business case is compelling. PWAs reduce customer acquisition costs because there is no app install barrier. They reduce development costs because you maintain one codebase for web and mobile. And they improve engagement because push notifications bring users back without paid retargeting campaigns.
Companies like Twitter, Starbucks, and Pinterest have reported double-digit improvements in engagement, page load speed, and conversion rates after launching PWAs. The technology is mature, well-supported, and proven at scale.
Offline-First Architecture
A PWA that breaks without internet is not a real PWA. We build offline-first applications using service workers that cache critical assets, API responses, and user-generated content. When the connection drops, your users keep working. When connectivity returns, changes sync automatically without data loss.
Our caching strategies are granular. Static assets use cache-first policies for instant loads. API data uses stale-while-revalidate to show cached content immediately while fetching fresh data in the background. Sensitive operations use network-first with offline queuing to ensure data integrity.
Performance That Scores 90+ on Lighthouse
We engineer every PWA to score above 90 on all four Lighthouse metrics — performance, accessibility, best practices, and SEO. This is not a vanity target; it directly correlates with user retention. Google research shows that a one-second delay in mobile page load reduces conversions by up to 20 percent.
Our performance toolkit includes code splitting, lazy loading, image optimization with next-gen formats, critical CSS inlining, preloading key resources, and server-side rendering for initial page loads. Every optimization is measured against real user metrics, not just lab scores.
We set performance budgets at the start of each project and enforce them in CI. If a pull request would push the JavaScript bundle past the budget, it fails the build. Performance is a feature, not an afterthought.
Push Notifications and Engagement
Push notifications are one of the most powerful PWA features, but they are also the easiest to abuse. We implement notification strategies that drive engagement without annoying users — transactional alerts for time-sensitive events, personalized recommendations based on behavior, and re-engagement nudges with careful frequency caps.
Our notification infrastructure handles permission prompts thoughtfully. We never ask for notification permission on the first visit. Instead, we wait until the user has engaged with a feature that benefits from notifications, then explain the value before requesting access. This approach consistently achieves opt-in rates above 40 percent.
Why Anubiz Labs
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Skip the research. Tell us what you need, and we'll scope it, implement it, and hand it back — fully documented and production-ready.