How do they edit their pictures on the phone? IPhone, etc

I just love how they edit their pictures and post it on instagram. @dariszcahyadi and @purpostofenvy. It is so perfect and look brilliant.sometimes when you ask what apps they're using, they don't really reply to you. It's not being selfish, but hello you can share right? You just want to know what apps they're using. Do you guys have any idea how to edit photos like theirs? And what apps?

Holly molly! Lol! I have the answer(s) to your question plus more

. You ready?! Here we go!

pe-fotolr
pic stitch
ps express
iretouch free
diptic
photo collage
f.maker.hd
instacollage free (this is my fav)

you to play with iretouch for a lil bit but you'll totally get the hang of it but these are All also All FREE so don't worry about paying for them but a couple of them DO take up alotta GB tho.