Related introduction:
The tf version of the software is not downloaded from the App Store, but from Apple's official beta distribution channel testflight, usually referred to as tf.
For tf version of the software, developers can put it on the shelves themselves or use the developer service platform, which will be simpler and faster, and can be completed in 30 minutes at the earliest.
Because the tf version of the software is a beta version, it may not be as perfect as the software that has been put on the App Store in some functions and interfaces, and there may be some minor bugs.
Some users may be worried about whether the tf version of the software will have any risks, but in fact, like the App Store, the tf version of the software also needs Apple's review, but its review will be more relaxed and easier to put on the shelves than the App Store. Some applications that can't be placed on the App Store will also choose to be placed on tf for users to install.