Progressive Web Apps: The Smart Alternative to Building a Mobile App
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Progressive Web Apps: The Smart Alternative to Building a Mobile App

UNION Design Team· 6 min read

Building a native iOS and Android app is expensive and slow. Progressive Web Apps deliver 90% of the same experience at a fraction of the cost. Here's what they can do.

The Mobile App Dilemma

You need a mobile-facing product for your business. The obvious answer seems like a native mobile app — an iOS and Android app your users download from the App Store or Google Play.

Then someone gives you the quotes.

A quality native iOS + Android app in South Africa costs R250,000–R800,000 to build. It requires maintaining two separate codebases. Both need to submit updates through app store review processes. And getting users to download your app is increasingly hard in a world where phone storage is precious.

This is why Progressive Web Apps have become one of the most strategically interesting technologies available to businesses in 2025.

What is a Progressive Web App?

A Progressive Web App (PWA) is a web application built with modern browser APIs to deliver an experience that feels like a native mobile app — accessible through a browser, with native-like capabilities.

Key PWA capabilities:

  • Install to home screen — users add it like a native app, no app store required
  • Offline functionality — service workers cache content for offline access
  • Push notifications — re-engage users with push alerts
  • Camera and GPS access — access device hardware through browser APIs
  • Full-screen mode — runs without browser chrome for a true app feel
  • Background sync — processes data even when not actively open

PWA vs Native App: A Realistic Comparison

| Factor | PWA | Native App | |---|---|---| | Build cost | R80,000–R200,000 | R300,000–R800,000 | | Platforms | All (iOS, Android, Desktop) | iOS + Android (separate) | | Distribution | URL or home screen install | App Store + Google Play | | Update deployment | Instant (no review) | 1–3 days (store review) | | Offline capability | Good | Excellent | | Device hardware access | Most features | Full access | | Discoverability | Google indexed | App store only | | Data usage | Lower (cacheable) | Higher |

When PWA is the Right Choice

PWA is ideal when:

  • Your user base needs mobile-first access to a web application
  • The core functionality works within browser API capabilities
  • You want one codebase for all platforms
  • Budget is a constraint
  • Fast iteration and updates are important
  • SEO and discoverability matter

Native app is better when:

  • You need deep hardware integration (AR, complex sensors)
  • Your users need intensive offline capability
  • App Store presence is a marketing channel
  • Performance at the highest level is critical (gaming, video processing)

Real PWA Examples That Changed Industries

  • Twitter Lite: 65% increase in pages per session, 75% more tweets sent, 20% lower bounce rate
  • Starbucks: 2x daily active users after PWA launch; app works offline for ordering
  • Forbes: 43% increase in sessions, 100% increase in engagement
  • OLX (Africa): Built as PWA to serve low-bandwidth African markets

South Africa and PWAs

PWAs are particularly well-suited to the South African market:

  • No data for app store downloads — accessed via URL
  • Works on low-end Android devices — lightweight by design
  • Works in areas with poor connectivity — offline caching
  • No app store gatekeeping — distribute via any link

Building a PWA with UNION Design

We build Progressive Web Apps using React and modern web APIs — delivered as a single codebase that works beautifully on every device.

Tell us about your product idea.

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