Convert app to psd Online: app2psd

You can use Tom's Editor to easily convert images from
APP .APP to Adobe Photoshop .PSD.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

APP

APP is an image format with extension APP.

PSD

PSD is in internal image format of Adobe Photoshop. It can store all the features offered by Photoshop, like layers and paths. Images can be compressed or not.