This app doesnt work with ios9

Im very unhappy with this app because it doesnt work!!!! I recently bought this app, I was very excited about it but it didnt work and that was when I found out that the app only works with iOS7 so... the people who have iOS9 cant use the app, so I think I lost my money, Im really, really mad about it. The right thing is that there should be a warning for the people who have iOS9

Unhappycostumeeeeer about Tangent - Add Geometric Shape, Pattern, Texture, and Frame Overlays and Effects to Your Photos