Implement the MAM reviews provider interface and register it so your app’s reviews read and write through a custom, non-WooCommerce data source.

Use the entitlement filter plus an is-active filter so one MAM plugin can advertise its licensed state and another can gate features on it.

Register both the submit-time value transform and the per-form submission handler so a custom field type (signature, barcode) renders and persists end to end.

Use the mam_hss_* filters to inject pinned-to-top items, post-nav-header banners, and end-of-stack CTAs into the app home screen.

Inject a custom field into the app user profile, persist it with the per-field save filter, and read it back into the phone-data payload.