I found a photo collage app for Android called Photogrid which I think is great and can compliment Instagram.
With PhotoGrid you can convert your photos collection into amazing collages and share it online!
* High mode: put your photos in a list
* Wide mode: put your photos in a row
* Multi mode: No restriction on the number of photo
* Single mode: you can edit a single photo
* Load images from the gallery.
* Five group to choose.
* Two kinds of model choose photo.(thumbnail, watermark.)
* Tap or shake to rearrange photos.
* Edit grid, Swap, Rotate, Move, Zoom, Sketch.
* A lot of image templates.
* Border type changeable.
* Share your collage using: Twitter, Facebook, Gmail…
* Language support: English, Korean, Chinese, Traditional Chinese, Japanese.
* The best app for creating colleges on Android for Instagram
I tested photogrid and posted the pic on my FB…
Saved me the hassle of uploading four pics.
Download Photogrid for Android here.