Apple App Store Short Description: Short Description is an field that is shown to the users in the listing and can then be expanded to see the full description. Max 170-characters
Apple Store Description: Provide an engaging description that highlights the features and functionality of your app. Max 4000 characters
4. Move on the the 'Google' tab, provide the descriptions for Play Store.
Google Play Store Short Description: When someone lands on your app’s page on Google Play Store, they see the preview of the description. Max 80 characters
Google Play Store Description: Full description when someone wants to see the more detail after reading your short description. Max 80 characters