I found this app a little frustrating to use since it crashed so much. I would just get the multiple image picture done and bam, it would crash, it did this multiple times when I first tried it to the point that I was about to bag it in. I have seen some improvement and was able to post some multi-image pictures. When it works it is good but when it doesnt it is horrid, I am hoping for the best from this app. and will continue to use it.
greyflash about PhotoGridPro - The Pro Collage Editor