The concept behind Watermark is quite good. The implementation, however, leaves much to be desired. The app won’t really fulfill the purpose of a watermarking tool until it incorporates the option to save watermarks. As of this writing, the app requires you to create a new watermark every time. And it isn’t exactly very flexible in usage. For instance, to position a watermark over the selected image, you have to tap away at the desired region till you get the text where you want it. The app does not allow you to drag it freely over the image. Also, color customization is limited to a meager 12 colors. A full color palette, similar to the ones found in most mobile photo editing tools, would be a welcome addition.
Plus points? A reasonably good-looking yet simple interface and a collection of 15 different fonts. Not bad for a free Windows Phone 7 tool.
You can grab the app for free from the Zune Marketplace via the link provided below.