The resolution of various models and the creation of software icons in iOS development

The resolutions for each phone in iOS are:

5.5 inch: 1242*2208;
4.7 inch: 750*1334;
4.0 inch: 640*1136;
3.5 inch: 640*960;

The icon for the software has the following requirements (note check the right side of the red box):

That is, a total of 6 images of 29pt, 40pt, 60pt,

These six images are generated using one-click Software called App Iron Gear. This software can be downloaded at the Apple Store for free. First design a large image of the 1024*1024 software icon in PNG format, and then drag the format into the app iron gear, you can generate the required six images. Click on the folder in the upper right corner to open the folder where the generated icon is located, then pour into the image resource management in Xcode. is a two detail: The software also generates various icons on iphone, Android, IPad, Watch, Mac, and tick what you need. Open the folder in the upper right corner to find the generated icon.

The resolution of various models and the creation of software icons in iOS development