Apple expanded Custom Product Pages enough that they are no longer a tiny edge-case feature. The current limit is up to 70 additional product page versions per app on the App Store for iPhone and iPad.
What can vary
A custom product page can use different screenshots, app previews, promotional text, and keywords. It is localizable and has a unique URL.
How users reach it
Apple says a custom product page is visible to people who follow its link, or when you choose to make it visible in App Store search results by adding keywords. Otherwise, the default product page displays.
When to use one
- A paid campaign that promises one specific feature.
- A creator campaign for a specific audience.
- A seasonal page that should not replace the default listing.
- A localized page for a market with a different buying reason.
Source notes
This post was checked against Apple's Custom Product Pages page and App Store Connect Help for configuring multiple product page versions.