App Setup

Icons 

256 x 256 pixels or 1:1

Logo area

200 x 200 pixels or 1:1

Home Page Screen Background

1334 x 750 pixels

Listing Placeholder 

100 x 50 pixels or 2:1

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Apple

App Icon

1024 x 1024 pixels PNG

Launch Screen

1334 x 750 pixels and 960 x 640 pixels

Android

App Icon

512 x 512 pixels PNG, no Alpha

Launch Screen

1334 x 750 pixels

Featured Graphic Screen

500 x 1024 pixels