Official alternative app distribution
Understand Apple's regional marketplace and web-distribution system and how it differs from IPA signing.
Apple's official alternative distribution system is often called sideloading, but it is not the same as signing an arbitrary IPA with a development or ad hoc certificate.
Current availability
Regions and features change. The EU supports alternative marketplaces plus developer Web Distribution, while Brazil and Japan support alternative marketplaces with regional differences. Eligibility depends on account region and physical presence. Check the canonical availability details and the current state before acting, and verify against Apple's availability page.
What Apple still checks
Alternative-distribution apps undergo Apple's notarization process for baseline platform integrity. That is not the same as full App Store review: the distributor remains responsible for its catalogue and policies, and Apple's support for purchases or app problems is more limited.
When to use it
Prefer an official alternative marketplace when:
- you are eligible in your region;
- the app is offered by an identifiable developer or marketplace;
- you want managed updates without handling P12 files or weekly refreshes;
- you accept the marketplace's payment, support and moderation arrangements.
It cannot be used as a general-purpose installer for any IPA you find online. If a tutorial asks you to disable security checks, change account region dishonestly or install unrelated configuration profiles, it is not describing Apple's normal alternative-distribution flow.
Travel and eligibility
Leaving an eligible region affects new installations and marketplace management. See availability details for the current grace behavior and check Apple's page instead of relying on a number copied into an old tutorial.