application marketplace only. Users should … not [download applications] from third-party sources, to minimise the risk of installing a malicious applicatio...

https://www.apple.com/jp/privacy/docs/Building_a_Trusted_Ecosystem_for_Millions_of_Apps.pdf

this trademark license. Apple further reserves the right, at its sole discretion, to modify this license, the Apple User Groups Signature and Trademark Guid...

https://www.apple.com/jp/usergroups/registration/pdfs/UserGroupsSTL2003.pdf