DS Screenshot
Makes adding your screenshots to device images dead simple.

Press Power + Home to take a screenshot on your device.

Then use DS Screenshot to choose your screenshot from the photo roll and DS Screenshot will add it all applicable device images.

Plus a single line of text is added as a watermark to protect your creations. Also useful to promote your website, blog, etc. The text and position can be adjusted from the application settings.

For horizontal images, simply choose your photo while hold the device horizontally.

Supported Device Images are:

01. Horizontal Silver iPad Air
02. Horizontal Space Gray iPad Air
03. Vertical Silver iPad Air
04. Vertical Space Gray iPad Air
05. Horizontal Silver iPad Mini
05. Horizontal Space Gray iPad Mini
06. Vertical Silver iPad Mini
07. Vertical Space Gray iPad Mini

08. Horizontal Blue iPhone 5c
09. Horizontal White iPhone 5c
10. Vertical Blue iPhone 5c
11. Vertical White iPhone 5c 
12. Horizontal Silver iPhone 5s
13. Horizontal Space Gray iPhone 5s
14. Vertical Silver iPhone 5s
15. Vertical Space Gray iPhone 5s