Creating and Exporting iOS Icons

1. Create your icon in Adobe Illustrator.
1. The icon should be square: 400x400, 1024x1024, etc. Same height and width.
2. Use "Export for Web (Legacy)" to export each different size to PNG
3. Sizes: 20, 40, 60, 80, 120, 180
1. More sizes: 29, 58, 87
2. More sizes: 76, 152, 167
3. App store sizes: 512, 1024
4. Drag the various icons into the Appicon Assets of your Xcode project