App-Entwicklung: Progressive Web Apps

ProgressiveWeb Apps

Progressive Web Apps combine the best of web and app: they run in the browser, can be installed on the home screen, send push notifications, and work offline – without the store barrier. For many use cases a PWA is the smarter choice than a native app: immediately accessible, platform-agnostic, and built on a single codebase for all devices.

Challenges you'll recognise

  • The store download barrier costs you users – many drop off before ever opening the app.
  • You want to offer the same app on desktop and mobile without maintaining separate native builds.
  • Your web app loses users on poor connections because it is entirely dependent on the network.

Service Worker

At the heart of every PWA is the service worker – a background process that intercepts network requests, caches resources, and delivers the app even without an internet connection. We implement caching strategies that enable offline experiences without degrading the user experience when a connection is available.

Web App Manifest

The web app manifest defines how the PWA behaves once it is installed on the home screen: app name, icons, splash screen, start URL, and theme colour. We configure the manifest so that the installed PWA is barely distinguishable from a native app.

Push Notifications

PWAs can – on compatible platforms – send push notifications even when the browser is not open. We implement push infrastructure via the Web Push API, with opt-in flows and notification management that match mobile user expectations.

Installation and Discoverability

PWAs are shared and found via URLs, not through stores. This dramatically lowers the barrier to entry: users click a link rather than initiating a store download. We optimise the install prompt and web presence for maximum reach.

Good to know

  • No Store Barrier

    PWAs are shared via URLs and used immediately. The install option comes as a contextual prompt – not as a mandatory prerequisite. This significantly lowers the entry barrier compared to native apps.

  • Offline-First Possible

    With service workers and strategic caching, PWAs can function without an internet connection – from a simple offline fallback to full offline usage.

  • One Codebase, All Platforms

    A PWA runs on iOS, Android, and desktop from a single codebase. No separate mobile and desktop builds, no store management across multiple platforms.

Frequently asked questions

When is a PWA better than a native app?
When the download barrier is a problem, the app needs to run cross-platform (desktop and mobile), or store policies need to be avoided. For very hardware-close features (Bluetooth, AR), native apps are preferable.
Do PWAs work the same on iOS as on Android?
Approximately – but not identically. Safari has historically supported fewer PWA features than Chrome. We develop PWAs with clearly defined capability boundaries and test on all target platforms.
Can I turn an existing website into a PWA?
Often yes – if it is already built with modern technologies. Service workers and a manifest can be retrofitted. Whether a full PWA experience is achievable depends on the existing architecture.

Related articles from our blog

Why nextlevels

Success you can measure

With us you're always one step ahead technologically and tap directly into our extensive app development expertise. We take a close look at your app idea, identify key success factors and create tailor-made applications. Your visions and goals are at the heart of our joint project work.

  1. Expert knowledge in app technologies

    React Native, Flutter, native iOS and Android — we pick the stack to fit your project, not our preference.

  2. Comprehensive user experience know-how

    Intuitive operation and seamless interactions decide ratings and how long users stay in the app.

  3. Proven track record

    Published apps in the App Store and Play Store — from MVP to mature platform.

  4. Versatile team

    Concept, design, development and backend from one hand — no friction at the interfaces.

  5. Long-term partnerships

    We stay after launch and keep evolving your app with maintenance and updates.

READY FOR YOUR APP THAT SETS NEW STANDARDS?

Whether you want to optimize an existing app or bring a new vision to life – we'd love to meet you. A no-obligation conversation is always a great start.

Profile picture of Paul Kalisch, Executive Partner
Paul Kalisch
Executive Partner

Related services