Progressive Web Apps (PWAs) represent a paradigm shift in how businesses deliver mobile experiences. They combine the reach and accessibility of websites with the functionality and engagement of native mobile applications. For Indian businesses targeting a mobile-first audience, PWAs offer a compelling alternative to building separate iOS and Android apps.
What Is a Progressive Web App?
A Progressive Web App is a website built with modern web technologies that delivers an app-like experience to users. PWAs can be installed on a user home screen, work offline or on poor network connections, send push notifications, and load almost instantly — all without requiring a download from an app store.
The term was coined by Google engineers Alex Russell and Frances Berriman in 2015. Since then, major companies including Twitter, Pinterest, Starbucks, Uber, and Flipkart have adopted PWA technology with impressive results.
Why PWAs Are Especially Relevant in India
Connectivity Challenges
Despite the 4G revolution, network connectivity in India remains inconsistent. Users frequently move between strong and weak signal areas, especially during commutes. PWAs use service workers to cache content and function even when the network is unavailable or unreliable, providing a consistent experience regardless of connectivity.
Storage Constraints
Budget smartphones, which dominate the Indian market, often have limited storage space. Users are reluctant to download apps that consume hundreds of megabytes. A PWA install typically requires less than 1 MB, eliminating the storage barrier entirely.
Data Cost Sensitivity
While data prices have dropped significantly in India, users remain conscious of data consumption. PWAs consume significantly less data than native apps because they cache resources efficiently and only download what has changed. Flipkart Lite, one of the earliest high-profile Indian PWAs, reportedly used three times less data than the native app.
Core Technologies Behind PWAs
Service Workers
Service workers are JavaScript files that run in the background, separate from the main browser thread. They intercept network requests, manage a cache of resources, and enable offline functionality. They also handle push notifications, background synchronisation, and periodic content updates.
Web App Manifest
The web app manifest is a JSON file that describes the application to the browser. It specifies the app name, icons, start URL, display mode (standalone, fullscreen, minimal-ui), theme colours, and orientation. This information is used when the user installs the PWA to their home screen.
HTTPS
PWAs require HTTPS for security. Service workers have access to powerful features including network interception, which makes a secure connection mandatory. In practice, every modern website should already be using HTTPS regardless of PWA implementation.
Benefits for Businesses
Lower Development Cost: Building one PWA is significantly cheaper than developing and maintaining separate iOS and Android native apps. A single codebase serves all platforms.
No App Store Dependency: PWAs are distributed through your website URL. There is no need to navigate app store approval processes, pay developer fees, or share revenue with platform operators.
Improved Engagement: Push notifications allow you to re-engage users, while the home screen icon keeps your brand visible. Companies that have adopted PWAs report significant increases in engagement and conversion rates.
SEO Benefits: Unlike native apps, PWA content is indexable by search engines. Your app-like experience also benefits from organic search traffic.
Automatic Updates: PWAs update automatically when users visit them. There is no need for users to manually update through an app store, ensuring everyone always has the latest version.
Limitations to Consider
PWAs have improved dramatically, but some limitations remain. iOS support for certain PWA features like push notifications was limited until recently, though Apple has been closing the gap. Access to some device-specific hardware features (Bluetooth, NFC, advanced camera controls) may be restricted compared to native apps. For apps that require deep device integration, a native approach may still be necessary.
Real-World PWA Success Stories
Twitter Lite, built as a PWA, achieved a 65 percent increase in pages per session and a 75 percent increase in tweets sent. Pinterest PWA led to a 60 percent increase in engagement. Trivago saw a 150 percent increase in engagement from users who added the PWA to their home screen.
In India, Flipkart Lite and MakeMyTrip have demonstrated that PWAs can deliver native-like experiences to millions of users on diverse devices and network conditions.
Should Your Business Build a PWA?
Consider a PWA if your target audience is primarily mobile, you want to reach users on budget devices, your content benefits from offline access, you want the broad reach of the web combined with app-like engagement features, or you want to reduce development costs compared to native apps.
PWAs are particularly well-suited for e-commerce, news and content platforms, travel booking, food delivery, and enterprise tools. For Indian businesses targeting a diverse, mobile-first audience, PWAs offer an effective way to deliver premium digital experiences without the barriers of native app distribution.
