App Icon Generator Round. It's pretty simple, but there apparently aren't good online tools for this ¯\_(ツ)_/¯. Appicon generator is a simple but powerful icon generator for os x, ios, and android.
Appiconmaker.co is a cloud service free icon maker which optimizes your app icon with proficient speed and generates icons of all sizes to be used on apps for different app stores. Unlike other icon generator applications, appicon generator do more than a simple resizing job. See the source on github.
Generate icons and images for mobile apps, android and ios.
Here you can generate all icon shapes and replace with new easily. Here you can generate all icon shapes and replace with new easily. Drag and drop svg, png, gif, bpm into this window. If you choose icon type as adaptive and legacy it will generate both square shaped and round shaped.