I am developing one android application in which I am using images licensed under creative common shared alike license(CC BY SA). license is saying "If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original." and must give attribution to work.
Thing is that I am using images as it is, no modification in images. So I am really confused in whether giving attribution to work is enough for me or should I distribute my work under same license and if it is how in case of Android app.
Specially I am really confused with build upon the material in license statement.
Help will be really appreciated. Thank you.