Simple and great app
I have customized my iPhone layout and icons using Apple Shortcuts, and it’s very minimalist. When I recently got an iPad Air, I needed to make a few more icon images. This meant going back into Photoshop and creating them. Luckily, I found Iconery. It has very simple icons that you can customize easily to control size, position, rotation, opacity and color of the icon and background color and pattern. You are not able to upload your own images and the customization area does not retain your previous settings, which is only a concern when creating multiple icons, but these are small comments given the ease of use of the app.