Apple's method of installing third-party software:
In fact, many Apple users and developers will find that some applications can be installed without App Store, and you can enter the download page by clicking the link directly. How are they realized?
Signature of Apple:
When installing a third-party application downloaded through a link, Apple mobile phones sometimes see the following prompt: description files need to be downloaded.
Moreover, you need to trust the enterprise certificate in the settings-general-description file and device management, that is, the software uses the enterprise signature, and the application using the enterprise signature only needs the trust certificate, which can bypass the review of the App Store and Apple and be directly installed on the Apple mobile phone. This is a method that developers often use when testing ios software.
Super signature:
Super signature is also a kind of Apple signature. Different from enterprise signature, the application of super signature does not need to actively trust the enterprise certificate when installing, and it is easier and more convenient to click the link to install. Super-signature is also a common method used by ios developers in the internal testing stage of software.
Tf signature:
The full name of testflight is not a third-party channel, but Apple's official internal testing distribution channel, unlike the App Store, has relatively loose auditing and is specially used for internal testing of ios software, so many developers with high stability requirements prefer to use tf signature for internal testing of applications. After all, corporate signatures and super-signatures will be cancelled. For example, tf signature can be signed on the platform in Shanghai, and once the tf signature is put on the shelves, it will basically not be cancelled, with outstanding stability.