A Progressive Web App is a website that behaves like a native mobile app. That’s it. No App Store, no approval process, no separate code for iOS and Android. Just a web app that people install on their phones and use when they’re offline.
If you’ve used Google Maps, Slack, or Spotify, you’ve used a PWA. It loads fast, sends notifications, works without internet, and feels like a real app.
For many businesses, a PWA is cheaper and smarter than building a native app.
How PWAs Work
A regular website loads from the server every time you visit. Close your browser, and it’s gone from your phone.
A PWA downloads code and data to your phone the first time you visit. It lives on your home screen like any app. When you open it, it loads almost instantly from local cache. If you lose internet, parts of it still work.
Underneath, it’s still a website—built in HTML, CSS, JavaScript. But it’s wrapped in technology that makes it behave like an app.
What Can a PWA Do?
Work offline
Service workers (background processes) cache critical data. Open your PWA on the tube or in an area without signal, and it still works. Changes sync back to the server when you regain connection.
Load fast
Cached data means no waiting for server responses. First load: 2-3 seconds. Subsequent loads: under 500ms. This is faster than most native apps.
Install on home screen
No App Store gatekeeping. No waiting for approval. Users add your PWA to their home screen from the browser and it becomes an icon they tap like any other app.
Send notifications
A service booking app can send a reminder: “Your appointment is in 2 hours.” A CRM can send: “Follow-up due today.” Notifications work even when the app is closed.
Access device features
Camera, location, contacts, microphone. Not all features (iOS PWAs are more limited than Android), but enough for most use cases.
Work on any device
One codebase, one deployment. iOS, Android, desktop, tablet. Update the server, and all users get the new version instantly. No waiting for app store reviews or users to manually update.
Where PWAs Fit Best
Service and booking platforms
Clients book appointments, get notifications, track arrival. Staff see their schedule, navigate to locations (GPS), check in with a form. A PWA is ideal: fast, offline where needed, no App Store friction.
Field teams and field service
Plumbers, electricians, surveyors. They need offline access (spotty coverage on job sites), ability to access job details, upload photos, sign off work. A PWA installed on a cheap Android tablet works beautifully.
Internal tools
Staff using a custom business application on their phones or tablets. A PWA avoids iOS/Android fragmentation. Everyone gets the same app.
E-commerce and retail
Fast load times mean higher conversion. Notifications drive re-engagement. Mobile checkout isn’t blocked by app store approval. PWAs are competitive with native apps at a fraction of the cost.
Media and content
News apps, podcasts, reading apps. Cache the latest articles and episodes. Users read offline. Updates push when connected. Works brilliantly.
Where PWAs Have Limits
App Store visibility
Native apps live in the App Store where users browse and discover. PWAs don’t. You drive users via marketing, your website, or word of mouth.
For most businesses this is fine. But if you’re building a consumer app that relies on app store discoverability, a PWA is a disadvantage.
Limited device access on iOS
Apple restricts what PWAs can do on iOS. Push notifications work, but access to some device features is limited. If your app needs deep iOS integration, a native app might be necessary.
A PWA loaded in a mobile browser is still constrained by the browser. For apps needing cutting-edge graphics (games), intense computation, or smooth animation, a native app might perform better.
But for business applications, data platforms, and services? PWAs are genuinely faster and more responsive than native apps.
PWA vs Native App: The Analogy
A native app is like signing a 10-year commercial lease. You get a dedicated space, customised to your needs, full control. But it’s expensive, inflexible, and you’re locked in.
A PWA is like renting flexible coworking space. You get a real working environment, fast setup, you can expand or contract based on need, and you’re not locked into a long-term commitment.
For most businesses, coworking is smarter than a lease.
The Cost Question
Native iOS and Android apps: separate code, separate testing, separate app store submissions. £30,000-£60,000+ to build and maintain.
A PWA: one codebase, one deployment, fraction of the cost. £15,000-£25,000 to build, similar ongoing maintenance.
That cost difference stacks up over time. A native app that needs a feature update costs £5,000-£10,000 and requires weeks for app store approval. A PWA update deploys in hours.
Is a PWA Right For You?
Yes, if:
You’re building an internal tool, service platform, or field service app.
You need fast iterations and updates.
Your users will install and open your app regularly.
Offline capability or notifications matter.
You want to avoid App Store submission friction.
Maybe, if:
You’re building a consumer app competing on discoverability. (A PWA plus web presence might work, but you’re not getting app store visibility.)
No, if:
You need deep iOS integration that PWAs don’t support.
Your app is a game or requires intensive graphics.
You’re betting on app store discovery as your primary user acquisition channel.
For most mid-market businesses building business applications, internal tools, or field service platforms, a PWA is the smarter choice. It’s faster to build, cheaper to maintain, and updates deploy instantly without waiting for app store approval.
Want to explore whether a PWA makes sense for your business? Head to our app development page to discuss what your application actually needs.
Frequently Asked Questions
Q: Can a PWA access my phone’s camera?
Yes, on Android. iOS PWAs have more limited access. If your app absolutely needs camera on iOS, a native app might be necessary. But for most business use cases, PWAs have enough access.
Q: Do users have to install a PWA?
No, you can use a PWA entirely as a website. But installation adds value—it’s on the home screen, loads faster, works offline. Many users will install if you ask.
Q: Can a PWA sync data with my backend?
Absolutely. When online, changes sync to your server in real-time. When offline, changes are stored locally and sync when you reconnect.
Q: Is a PWA secure?
Yes. PWAs use HTTPS encryption the same as regular websites. You build security the same way: secure authentication, validated inputs, protected APIs.
Q: How long does it take to build a PWA?
For a typical business application, 8-12 weeks. You’ll see working features earlier (weeks 2-3). PWAs don’t take longer to build than traditional web apps—they just add offline capability and installation features.
Q: If we build a PWA, can we make a native app later?
Sure. Your PWA demonstrates the concept and builds user base. If you later need native features, you can build a native wrapper around your PWA or build a parallel native app. Most businesses find the PWA is enough.
