Progressive Web Apps: The Future of Web Applications

Source: Progressive Web Apps

What is a Progressive Web App (PWA)?

PWAs are websites that behave like native applications but without the hassle of a mobile app store. They leverage web platform capabilities, recent web standards, and user experience best practices to engage with visitors and customers to increase return on investment.

“Just websites that took all the right vitamins”

Source: Progressive Web Apps

Features of a PWA

Rich experience of PWAs is powered by the following features:

  1. A Valid Web Manifest File: The Web Manifest File contains metadata about your PWA to describe it to the browser, including icons used to represent the app on the home screen and desktop.
  2. Service Worker: They enable applications to control network requests, cache those requests to improve performance, and provide offline access to cached content. Hence, PWAs can offer the following features:
  • Latest content
  • Offline usage
  • Push notifications

Why do you need a PWA?

  • Fast: PWAs provide consistently fast experience for users. From the moment user downloads the app to the moment they start interacting with it, everything happens extremely fast. It is also fast to start the app again without hitting the network.
  • Reliable: Progressive web apps can start faster and work even if there is no internet connection when you use a service worker with a proper caching strategy. This can be advantageous because you can eliminate network requests and the need for a connection when your application needs to run.
  • User Engagement: Through push notifications, you can drive up user engagement by keeping the user notified and engaged with the app.
  • Integrated User Experience: With PWAs, the experience is integrated and seamless. This is because they sit in the user’s home screen, send push notifications and have access to the device’s functionalities like native apps.

Advantages of using PWAs

  • Safe and Secure: Without sacrificing performance or security, PWAs provide familiar app experience as to what users demand. PWAs combat the problem of content being stolen, shared or hacked via HTTPs
  • Easy Updates: PWAs have added the benefits of pushing updates by the developers themselves and not the users. The new updates and features can be added remotely by the development team. Users will notice new and improved features but do not have to approve updates themselves.
  • Access Anywhere: Since PWAs are offered in the form of an interactive website, they are available to everyone with internet access and a browser. PWAs do not need to be downloaded and are instantly compatible. There is no dependency on the user having enough storage space. PWAs have an added benefit of not needing to be upgraded by the user. If the newer version comes out, they have instant access to it by merely visiting the website.
  • Independence: The type of device, its model, and memory resources, or the type of web browser do not matter. The progressive application works independently of the environment in which it will be launched.

Disadvantages of using PWAs

  • Missing Out on App Store Traffic: Although it is a benefit that PWA does not follow the long process of app downloading like native applications, they also miss out on a large chunk of users who primarily search for apps on the app store.
  • Limited Functionality: PWAs have limited access to vicinity sensors, NFC, fingerprint scanner, Bluetooth, advanced camera controls, geofencing, and others. Additionally, its usage drains your mobile’s battery faster than any other native application.

Companies using PWAs

Source: PWA
  • Twitter launched Twitter Lite, a Progressive Web Application in April 2017. Their goals were simple: faster load times, more engagement and lower data consumption. They were able to achieve all three. 65% increase in pages per session 75% increase in Tweets sent 20% decrease in bounce rate
  • Google reports that banners implemented in Progressive Web Apps convert from 5 to 6 times more often than banners on websites.
  • Uber PWA at 2G range loads in less than 3 seconds and takes less than 50kb.
  • Tinder PWA reduced the loading time from 11.91 seconds to 4.69 seconds and — most importantly — it is smaller than the native Android app.
  • Starbucks, Lyft, Forbes, Trivago and thousands of other well-known brands, worldwide are adopting progressive web applications. Each one reporting improved user engagement numbers. More time on site increased sales and all testify their site speed has improved.
  • The average load time for a PWA-based page is 2.75 seconds.
  • PWA takes an average of 25x less disk space than a dedicated application.
  • Progressive Web Apps loads up to 15x faster than a regular website.


As a crossover between native and web apps, PWAs provide advantages similar to a native app at a much more affordable price. Yes, there are some disadvantages too but its benefits successfully overshadow all of it or most of it.

Further Reading

About me

Amrut is a Full Stack Software Engineer who is passionate about tech and web and mobile applications. He likes to write about coding, investing, trading, finance, and economics. He regularly writes for popular publications like The Startup, Noteworthy — The Journal Blog,, Data Driven Investor and



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Amrut Patil

Amrut Patil

562 Followers | Cloud Architect | Consultant | Coach | 3x AWS Certified | Writing about Cloud architecture, system design, strategies & solutions