In looking for an add-on lens for my S7, I wanted both a fisheye lens for panoramic stitching and a macro lens for magnifying stuff (like bugs). This set of lenses fits the bill. One of the key features of this product is that it seems like it will work with a lot of different phones. Other current options for add-on lenses are often limited to a few brands or even specific phone models. The downside to a generic lens like this one, is that you have to carefully adjust the clip/lens over the camera lens at first and because it's not super-tight, you will have to adjust from time-to-time as the clip moves around. Another downside with a universal clip lens is that it doesn't always lie exactly parallel to the camera lens. This leads to some distortion on the edges of an image. One final thing I'd like to point out is that for macro shots, the phone's LED flash is not too useful as-is because the clip-on lens blocks a lot of the light on the object of interest. One solution is to use an external lamp.