All apps submitted to the App Store are reviewed based on a set of technical, content, and design criteria, so take your time choosing them.

Follow these steps to upload your logos:

Required Images: In order to publish your apps, you will need to upload the required assets in the required dimensions and formats for all stores. Fill free to design whatever design you want!

This is the icon that represents the service in the stores and on the home screen of the devices. Every app needs a beautiful and memorable icon that attracts attention in the Stores and stands out on the Home screen. Your icon is the first opportunity to communicate, at a glance, your app’s purpose.

This logo appears in the horizontal at the top of an app screen and website.

It's the small iconic image that represents your website. Favicons are most often found in the address bar of your web browser, but they can also be used in lists of bookmarks in web browsers and feed aggregators.

Now, to publish the Apps Android and iOS, the following logos are needed:

It is the welcome image of the phone application. The one that will appear while the app is loading. Splash screens are a nice way to transition from the launching of your app to your first view. You can have two different images for a phone and for a tablet device.

It is the welcome image of the application for tablets. (Logo a little above not in the middle like splash image for phone).

This is the cover image that appears on the app's profile in the store. It is a required feature graphic by Stores.

After uploading these images, you are ready to publish your Apps. Just to go App Builder > Store Presence > Publish my App.