*Fotos Pro (No Ads):
https://play.google.com/store/apps/details?id=com.xor.fotospro

With Fotos you can make your photos collection into amazing collage.
It is the most popular FREE mobile photo editor with over 100 mln installs
Fotos's simple interface and outstanding menu of pre-designed grids make it the best collage app
You will love Fotos. It can work hand in hand with Instagram to quickly produce beautiful results…
Fotos is free and makes sharing pics and collages easy.
Instantly and easily create collages, wallpaper and photo albums.
Edit pictures in our photo lab and share on Instagram and other places with Fotos
This collage maker is incredibly easy to use, try it and see for yourself.
100% free and fully loaded.
Features:
* Create a professional collage instantly — incredibly easy
* Variety of layouts for photo grids, wallpapers, photo walls, albums and collages
* Shake to conveniently swap pics or manually select for precision
* Editor allows you to move, swap, rotate, zoom, sketch, etc in the photo lab
* Add text, delete text, emoticons and clip art, many sticker to your photos and collages
* Arrange your collages loosely or in a square (for Instagram), wide rectangle, tall rectangle or just use a single photo
* Share via Facebook, Instagram, Twitter, Flickr, Picasa, Blogger, Tumblr, Google Plus, email, etc
* Our of Photography: fotos, Foto art, Picsart collage, photo art collage, picart color, photo collection, photo editor