Why many apps have launch pages

When we launch the app, it's usually a logo-containing image. This image is called the start page.

Is this launch page necessary or necessary? What's the effect?

This is the official Apple for IOS Design notes for the start page:

To enhance the user experience at application startup, you should provide a boot image. The boot image looks very similar to the application's first screen. When the user taps your app icon on the home screen, IPhone OS immediately displays the boot image. Once you're ready, your application will display its first screen to replace the boot placeholder image. Keep in mind that launching an image does not give you the opportunity to perform an art presentation; it is all about increasing the perception that your application can be started quickly and put into use immediately.

In Apple's cognition, it is emphasized that the starting page must be to solve the user's waiting time and ensure the user's use is smooth.

From a design standpoint, the start page has this effect:

( 1 ) with the app internal page seamless

This type of launch page uses a program dummy diagram as the program's start-up transition, allowing the user to assume that the program is ready for use. Among them, ibook and Google Earth and the actual program interface using the interface of the best combination.

(2) Brand information transmission

Brand Transfer class Launch page is relatively simple, the basic use of Product name + Product logo language as the structure, simple highlighting the theme can be. For example, near:

(3) Emotional story resonance

It's really not easy to tell a story or express feelings through a short start page.

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Why many apps have launch pages