Unpublish the app from the stores

1. Open the Play Console .
2. Select your app.
3. Select Release > Setup > Advanced settings.
4. On the App Availability tab, select Unpublish.

More details here .

1. Log in to App Store connect service with your iOS developer account: https://appstoreconnect.apple.com/
2. Click on the My Apps icon
3. Click on the app you want to unpublish
4. Click on the Pricing and Availability
5. Select "Remove from sale" option below "Availability"
6. Save