Should you buy Wallax app or Wallaper Fix app?
Original and First App:
Wallax app is the original app, first app to fix wallpaper zoom issue in iOS 7.
Wallax - NO in-app purchase.
Wallpaper Fix - To change background color from default black to white or other color you need to buy in-app.
Wallax - has 100s of options to fix wallpaper like background, blur, reflection, combine 2 or more photos to make wallpaper, gradient wallpaper, shapes etc.
Wallpaper Fix - has only options to change background color.