Question: app to do split screen photos?
Answer: Diptic. Diptic is definitely an outstanding split screen picture app with a host of useful editing features. ... 
MOLDIV. ... 
piZap Photo Editor. ... 
PicPlayPost. ... 
Fuzel Collage. ... 
PicsArt Photo and Collage Maker. ... 
Pic Stitch-Collage Editor. ... 
Pic Jointer.