Add text on photos:
* Easily add text to your photos
Tell people who you are:
* Before to share your photos on social network (Facebook, Instagram, Twitter), add your logo or watermark
Protect your photos:
* Add your watermark to mark all photos
Describe your photos:
* Help people to reach you by adding details like email or website to your photos
* Font, color, opacity of text can be changed
* A lof of placeholders to use in text (timestamp, some EXIF fields, filename)
* History of recent text used
* Support of transparent .png images as watermark
* Support of EXIF metadata
* Output resize
* Processing of multiple images in batch mode
* Share your photos on Facebook, Twitter
* Email your photos to your friends or save them on you
Requirements: Android 4.1+
Home Page -

https://play.google.com/store/apps/details?id=com.xnview.watermarkmepro&hl=en