What Are Progressive Web Apps & Why Should You Care About Them
So, someone in a client call last week asked me "what is a progressive web app and why does it matter for my business" and I realized I'd been throwing the term PWA around for months without really sitting down and explaining it properly to anyone outside the dev industry. Honestly, I'm kind of a bit embarrassed about that. So, let's solve that right here.
A progressive web app, or PWA for short, is just a website that’s been dressed up to act like a mobile app. Not claiming to be one. Actually acting like one. You open it in your browser, but it's offline-capable, can send you push alerts, can live on your home screen with an icon, and loads fast enough that you forget you're within a browser at all. Pinterest tried this years ago and experienced a very large increase in their mobile web conversions. Starbucks did one also and their ordering app size went from like 100+ MB down to about 1 MB. That's the kind of difference we're talking about.
How can Progressive Web Apps work without being an app?
This is where things become interesting, and when most online explanations go much too technical way too fast. A PWA depends on a few key bits of tech that have been sitting in browsers for years, simply not fully exploited till someone figured out you could stitch them together.
The first part is something called a service-worker. It's like a background helper script that lives between your browser and the network. It's like a very observant assistant that watches your requests and decides if it needs to grab new data or just give you something it already has in cache. And this is precisely why PWAs load instantly on a crappy 3G connection, or work when you have no signal at all, like in a cellar or an elevator.
The second part is the web app manifest, a little JSON file that informs the browser about your app’s name, icon, theme color, and how it should act when someone adds it to their home screen. Your site is just... a site without this file. This makes the browser treat it as something installable.
Third, there’s HTTPS . No negotiation. If your site isn't served securely, PWAs just won't pull off their fancy offline tricks. Which is fair enough, because you're running a script in the background even while the user isn't actively looking at the page, and that needs some confidence built in.
Native Apps Vs Progressive Web Apps Which One Should You Build Actually
Okay so this is probably the question I get asked the most and I’m going to be honest with you – there is no right answer, no matter what some agency’s sales page tells you.
Native apps, the kind you download from the App Store or Play Store, still have the edge in a few places. They get full access to device hardware, camera, bluetooth, sensors, everything. It is its own discovery channel that comes up in app store search. And for experiences such as heavy gaming, or AR features, native performance is still king.
However, PWAs gain a lot of ground where native applications suffer. No app store clearance process can delay your launch by weeks. No pressuring users to download something before they even know if they like your product. One code base that runs on devices instead of separate builds for iOS and Android which honestly saves a huge amount of developer time and money. And they are indexable by Google thus a PWA may really show up in search results, something a native app cannot do (for the most part) unless you are running app indexing separately.
I dealt with a client lately, a small e-commerce shop, nothing huge, who was hemorrhaging money trying to maintain an iOS and Android app simultaneously with basically 1 developer. We converted them to a PWA arrangement instead and in a few months their mobile bounce rate fell since pages were loading in under two seconds instead of five or six. It wasn't a miraculous remedy for everything but it counted.
Benefits Of Progressive Web Apps For Startups And Small Businesses
If you’re running a small business or a startup on a budget (and let’s face it, most are), the case for a PWA quickly becomes rather persuasive.
The obvious one is expense. Building and maintaining a website and two native apps is expensive. You’re paying for two code bases, two sets of bugs, two app store listings to maintain, two of everything. A well baked PWA collapses that to one.
Another is velocity. Google has been quite clear for years that page speed impacts both rankings and conversions. People bounce off of slow sites. Period. PWAs are built with caching and pre-loading information in mind, thus they usually feel snappier than a standard responsive website, particularly on repeat visits.
Then there’s the install-without-installing feature, which I think is underestimated. From the browser, a user may add your PWA to their home screen with one tap. No app store, no permission screen full of warnings, no waiting for a 40MB download over hotel internet. It just comes up and it works.”
Offline functionality is more important than people think. Think of someone looking at a restaurant menu PWA in the metro or a field technician looking at a repair manual where the signal is spotty. A cached PWA continues to work while a normal website would simply show an error page.
The Hidden Drawbacks Nobody Ever Discusses
I don’t love when material pretends that PWAs are perfect, since they’re not, and claiming otherwise is a disservice to anyone actually trying to determine what to create.
The weak link has always been iOS support. Over the years Apple has come a long way but support for some of the PWA capabilities in Safari still falls behind Chrome and Android in some areas, especially on push notifications and some storage constraints. If a large part of your audience is on iPhones, test thoroughly before committing.
It’s also harder to discover. If you don't have an app store listing, then you are completely reliant on people finding your website and choosing to install it. Your SEO and marketing needs to be doing actual work, not simply sitting there.
And not all product types are ideally suited to the PWA model. If you need deep hardware connectivity, think fitness trackers syncing with wearables or apps conducting heavy background processing, native is definitely still the better solution for now.
Is It Worth Building a Progressive Web App for Your Business
To be blunt about it: If your business is content-centric, e-commerce, or service-oriented and you’re aiming to deliver a speedier, more app-like experience to mobile customers without the overhead of native development, a PWA is really worth serious consideration. Booking platforms, blogs, online businesses, news sites, these are precisely the use cases PWAs excel at.
If you are designing something that needs deep OS level access, or your primary audience is really iOS heavy and you need immaculate push notification reliability, then you might still want native or at least a hybrid strategy, where you give both options and let users choose.
Once you’ve confirmed demand, there’s no shame in building native apps on top of a PWA. A lot of companies do that and it saves tons of wasted cost on an app store presence no one downloads yet.
Frequently Asked Questions
1. Is a progressive web app the same as a website?
Not really. A normal webpage just sits on your browser tab. A PWA is created with conventional web technology, but it adds an app-like layer, offline caching, home screen installation and occasionally push notifications, so it acts more like a native app, while still technically being a website underneath.
2. Are progressive web apps compatible with iPhones?
Yes, but with some caveats. Safari has improved PWA support over the years, but things like push notifications and storage capacity still feel a little different on iOS than they do on Android. Instead of presuming parity, it’s worth testing your specific PWA on the iPhone before launch.
3. How much does it cost to develop a progressive web app vs a native app?
Usually a lot less because you're maintaining one codebase instead of separate iOS and Android builds. Cost varies based upon complexity but most organizations find considerable savings both on development and continuing maintenance when they go the PWA route.
4. Can I turn my existing website into a progressive web app?
Yes, in most circumstances, a PWA is really just a better version of your website, not a separate item to maintain alongside it. You’re developing on your existing site, adding functionality, rather than constructing something fresh in tandem.
5. Do progressive web apps appear in Google search results?
Yes and this is actually one of their main advantages over native apps. Because a PWA is just a website, Google can crawl and index it like any other website. This means it can benefit from any SEO work you’ve already done in a manner a native-only app can’t.