You can store your downloads in your account when you signup!
Two iPhone 5s phones stand side by side on a wooden table. The first iPhone 5s is white with a gold frame. The seconds iPhone 5s is black with a dark frame. Both hold an image of 640x1136px in portrait mode. The phones are at a slight angle from the viewer. This is great for a side by side shot of your mockup.
Drag & drop not supported, but you can still upload via this input field: