How can create google pay for Ionic 4 (android / ios ) app?

I have created google pay for web using following

URL : Google pay for Web

I want to create same google pay for ionic 4 app which works on android and ios app

How can I create? Any reference... Please guide... Thanks in advance

Does Google Pay have an iOS app?

Get the Google Pay appDownload Google Pay on phones running iOS 10.0 or higher. Enter your phone number. Sign in with your Google account. Follow the instructions to secure your Google Pay app and add a bank account.

If you are using Ionic to write your application, you'll need to make use of native plugins on Android in order to integrate Google Pay in your application (note that at the moment we do not maintain a library on iOS). Once in the JVM domain –both Java or Kotlin– you can follow the Android tutorial in our dev docs.

Hope it helps.