Watermark Treasure is a comprehensive multimedia editor designed for iPhone users. It offers a wide range of features for audio, video, and image processing. Users can add watermarks to videos, convert video formats, compress videos, extract audio, adjust video speed, clip durations, mute videos, convert image formats, compress images, crop images, recognize text, and add watermarks to images.

The program supports various video formats including AVI, MOV, FLV, MP4, and more. It also handles multiple audio formats like MP3, OGG, WAV, and several image formats such as PNG, JPG, GIF, and more. Text recognition is performed on the server side, promising file security with regular clearing.