Ray Watermark: Photo Video is a free multimedia application designed for iPhone users that allows easy addition of watermarks to photos and videos. It offers a wide range of features for creating custom text, image, or QR code watermarks, making it suitable for photographers, designers, and content creators. Users can adjust the opacity, size, and rotation of watermarks, enabling them to create unique branding elements efficiently.

The app simplifies the watermarking process with an intuitive interface, allowing users to select multiple images or videos and customize their watermarks in just a few taps. Ray Watermark also includes a subscription option for accessing premium features. Overall, this application serves as a robust tool for anyone looking to protect their creative content.