Step 1: Create a PWA
Sign up for Progressier and follow the instructions to add an app manifest and service worker to your web app. You can also do this manually but Progressier will save you a lot of time and effort.
Step 2: Create app store bundles
Next, you'll need to create bundles and upload them to the stores. This is where PWABuilder comes into play. PWABuilder allows you to ship your PWA to the app stores. Simply sign up for an account at PWABuilder and follow their instructions.