Apps to edit photos so the fit on instagram?

[Kelly]

So on my instagram account i post funny pictures and sometimes they don't always fit. My friend was tellig me about an app that she has that can make your photos small enough to fit on instagram. Like when I try to post one of those lolsotrue pictures they can be too wide. Anyway to fix those witha specific app?

[?]

Pics art to crop them & photo squarer or squaready (for iPhones) to square them and make a border.