I used to have an iPhone 4 and this app worked fine, but then I got an iPhone 6 and all of a sudden the transparency bar is missing. Its really difficult because it is still there but its not visible so every time I have to fix the transparency of my watermark I have to guess where the bar is and trying to find it takes forever. Its very frustrating and I hope this problem gets fixed soon!
SkyRenee about PhotoMarkr - Watermark Your Photos