angles is an important factor in the photo comparison.
it is inevitable to take comparison photo and take also time.

App "anglesCam" is possible to take a comparison photo simply.
App lets you take a picture, then take another over a transparency of the the first.
 
Characteristic）
@ photo checking is easy .
touch finger to the finder. : finder is showed camera view only.
release finger to the finder. : finder is showed camera view with the opacity photo.

@reduce the wasted　photos.
because App save photo after the check.

@ choice the opacity to the 50% or 70% or 90%.

@ Confirmation is easy.( take a photo )
you can check side by side with　reference photo and the took photo.
@easy adjust photo .( take a photo )
long press a photo. : Rotate photo with 180 degree.
singleTap a photo. : Swap the reference photo position and the tooked photo position .