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WEB TO APP CONVERTER

Web to App Converter — How Your Web App Becomes a Native Install

A web to app converter should do exactly what its name says: take a running web app and produce a native, installable, signed app. This page opens the black box — the exact pipeline that turns your URL into a store binary, why SaasToStore picks TWA or Capacitor for you, and how your signing keystore is handled so your updates never break.

Updated July 23, 2026

Try it freeSee pricing

What SaasToStore converts

Any HTTPS web app→ Signed Android .aab + .apk
Any HTTPS web app→ iOS build for App Store Connect
Any HTTPS web app→ Windows .msi installer
Any HTTPS web app→ macOS .dmg (notarized)
Any HTTPS web app→ Linux .AppImage + Snap + Flathub

The full conversion pipeline

  1. 01
    ANALYZE

    Scan your web app: manifest, service worker, icons, HTTPS, PWA score

  2. 02
    SELECT

    Auto-select build type: TWA (full PWA) or Capacitor (any HTTPS URL)

  3. 03
    GENERATE

    AI generates 512×512 icon, feature graphic, screenshots, store copy

  4. 04
    BUILD

    Bubblewrap or Capacitor compiles your signed .aab. Tauri for Desktop (3 OS).

  5. 05
    DELIVER

    Signed .aab + .apk (Android), .msi + .dmg + .AppImage (Desktop) by email

  6. 06
    PUBLISH

    One-click to Google Play, Amazon, Samsung, Microsoft Store via API

TWA vs Capacitor — which build you get, and why

The single technical decision that determines whether your app passes Google Play review is the shell type. SaasToStore makes it for you from your PWA score, but here is what happens under the hood. A Trusted Web Activity (TWA) renders your site with the device's Chrome engine in full-screen, with no browser UI — it is fast and small, but it requires a valid manifest and service worker plus a verified Digital Asset Links file. When your site qualifies, that is the build you get. When it doesn't — which is the case for most Bubble, Webflow and Softr sites, since they don't emit a service worker — SaasToStore falls back to a Capacitor shell that wraps any HTTPS URL in a native WebView. Crucially, both paths output a properly signed .aab, not a raw WebView APK, so both clear Google Play policy 4.3. You never choose or configure this; the analyzer reads your site and routes the build automatically.

Your keystore, and what "a real converter" includes

On the first build we generate a unique 2048-bit RSA keystore, encrypt it, store it, and email you a backup. Every future update is signed with that same key — the requirement Google Play enforces to accept an update as the same app. The keystore is yours, so you are never locked into a subscription to keep publishing.

  • Signed .aab — a properly signed Android App Bundle, not a WebView shell
  • Capacitor mode — works without a service worker (Bubble, Webflow, any URL)
  • AI assets — icon, feature graphic and screenshots auto-generated
  • Digital Asset Links — configured automatically for the Play Store
  • Keystore backup — encrypted, yours, reusable for all future updates
  • Multi-store — one build → Google Play, Amazon, Samsung, Microsoft, GitHub
  • Android + iOS + Desktop — from the same URL, one purchase

Frequently asked questions

How does a web to app converter actually work?+

It wraps your live web app in a thin native shell that loads your URL, then compiles and signs a store binary. SaasToStore runs six steps — analyze, select build type, generate assets, build, deliver, publish — and returns a signed .aab (Android) or installer (Desktop) without you touching an IDE.

What is the difference between the TWA and Capacitor build?+

TWA (Trusted Web Activity) is a lightweight Chrome-backed shell that needs a PWA (manifest + service worker). Capacitor is a full WebView shell that wraps any HTTPS URL, no service worker required. SaasToStore auto-selects: TWA when your site qualifies, Capacitor otherwise. Both produce a signed .aab that passes Google Play.

Does SaasToStore work with web apps that don't have a manifest?+

Yes. The Capacitor build wraps any HTTPS URL into a native Android app — manifest, service worker and PWA compliance are optional. If your site has them, the faster TWA build is used automatically.

How does keystore management work?+

We generate a unique 2048-bit RSA keystore for your project on first build, encrypt it, store it, and email you a backup. Every future update reuses the same keystore. This is critical: Google Play rejects updates signed with a different key.

Can the converter produce Android, iOS and Desktop from one URL?+

Yes. The LAUNCH plan converts one URL to Android (signed .aab + .apk), iOS (App Store) and Desktop (Windows .msi + macOS .dmg + Linux .AppImage) — all from a single URL, in one purchase.

Ready to ship?

Paste your URL. We handle the build. You publish to the store.

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