PWABuilder alternative: SaasToStore vs PWABuilder

Is PWABuilder free?

The tool, yes: pwabuilder.com and its packaging service cost nothing, and the code is on GitHub under the MIT licence. The real cost sits around the packages it hands you:

• Key custody. For Google Play, PWABuilder gives you a signing.keystore and a text file with its passwords. They are yours to store. Lose them, and the next update can't ship under the same listing until Google resets your upload key.
• A fix after the first upload. Google Play re-signs your bundle, so you add the Play signing fingerprint to assetlinks.json on your server — otherwise the app opens with a browser address bar.
• A Mac for iOS. The iOS output is a Swift Xcode project, which PWABuilder itself labels experimental. You compile, sign and archive it yourself.
• Every update, again. A new version means regenerating the package, signing it with the same key and uploading it to each store, one by one.
• The stores' own fees, which no tool removes — they're listed in the FAQ below.

None of this is a flaw: PWABuilder is a packager, by design. SaasToStore is a pipeline — the same packaging, plus the signing, the macOS build machines and the updates.

What PWABuilder generates, store by store

Why people look for a PWABuilder alternative

No Mac, no Xcode for the App Store

Most founders who ship a web app don't own a Mac, and setting up certificates and provisioning profiles in Xcode is a day of work the first time. With SaasToStore, the iOS app is compiled and signed on our build machines from the same URL as your Android app.

Updates without the ritual

Your content updates live, because the app loads your site. But store releases still happen — a new icon, a new target API level, a new permission. SHIP includes the first build plus 3 updates per platform for 12 months, and your keystore stays with us, encrypted and backed up — so an update never depends on a file someone saved on a laptop.

Desktop beyond the Microsoft Store

PWABuilder's desktop target is Windows. SaasToStore also builds a .dmg for macOS and an .AppImage for Linux, with Snap Store and Flathub packages.

Sites that aren't a full PWA yet

PWABuilder starts from a valid web manifest. SaasToStore reads what your site already has, and when a TWA isn't the right fit — typically no service worker — it builds a Capacitor native shell instead, so the Android app still ships.

Side by side

Already published with PWABuilder? Keep your app

Moving doesn't mean starting over. If your app is already live on Google Play, SaasToStore continues its version numbering and gives you the upload certificate Google asks for in its "Request upload key reset" form. Your next update then ships under the same listing, with its reviews and installs. Keep PWABuilder's signing.keystore safe either way: it's the key Google knows today.

When PWABuilder is the right call

If you're a developer, comfortable with keystores and Xcode, targeting mainly the Microsoft Store or Meta Quest, and every euro counts, PWABuilder is excellent — SaasToStore relies on its engine for Microsoft Store packages. If you'd rather go from one URL to signed apps on every platform and let someone else run the builds and the updates, that's what SaasToStore is built for.