You only need to prepare one single original image file for all the icons. After that, just add it into Icon Resize.
16 types of PNG files are exported each in an instant. And you can email all the images or AirDrop them to your Macbook and other iOS devices.
57*57
114*114
40*40
80*80
87*87
60*60
120*120
72*72
144*144
76*76
152*152
29*29
58*58
50*50
100*100
180*180
167*167
36*36
48*48
96*96
Icon Resize will accelerate your app development!