As I mention before Adobe Photoshop Touch/ Ps CC no longer available on App store but You can downlaod it from sorif.in.
Here follow these steps to get Ps CC/ Ps touch apk on Your Phone.
Search for sorif.in
Enter the first site
click on the search bar and search Ps touch /Ps cc apk
Download Ps cc/ Ps touch Latest apk
Install it and enjoy!