Reference apps on playstore : https://play.google.com/store/apps/details?id=com.intencemediallc.watermark
https://play.google.com/store/apps/details?id=com.teapps.watermarkphoto -Add image/text as watermark on image -Rotate image. -Drag text and put whenever you want. -save watermarked image in gallery -share watermarked image with facebook,whats app, twitter, line etc -Maintain Opacity -Easy to use -Attractive UI -Admob banner + intersitial ads -Easy to customize the app.- Well formed documentation. - .apk file - Screenshots. - Full support if have any issue with code.