1 Big App: @3x Resizer – helps developers and creatives create those nasty @3x, @2x and 1x size images for the apps.
All you have to do is select a @3x image and all other sizes will be create with just a single click.
Select images/photos from “Photos” or from “Files”.
Resize and Save to “Photos” or share anywhere :) Your @3x, @2x and @1x images are waiting for you.