A launch image displays when your app starts up. It appears instantly and is quickly replaced with the first screen of your app, giving the impression that your app is fast and responsive. A launch image isn’t an opportunity for artistic expression. It’s solely intended to enhance the perception of your app as quick to launch and immediately ready for use. Launch images are static, and don’t include layers.
IMPORTANT Every app must supply a launch image. A @2x launch image is required for all 4K apps.
|Image size (@1x)||Image size (@2x)|
|1920px × 1080px (1920pt × 1080pt @1x)||3840px × 2160px (1920pt × 1080pt @2x)|
Design a launch image that’s nearly identical to the first screen of your app. If you include elements that look different when the app finishes launching, people can experience an unpleasant flash between the launch image and the first screen of the app.
Don't include text in your launch image. Because launch images are static, any displayed text won’t be localized.
Downplay launch. People are likely to switch apps frequently, so design a launch image that doesn’t draw attention to the app launching experience.
Don’t advertise. The launch image isn’t a branding opportunity. Don’t design an entry experience that looks like a splash screen or an "About" window. Don’t include logos or other branding elements unless they’re a static part of your app’s first screen.