They have a solid build quality, work with a range of smartphones and are compatible with a wide variety of cases. You really get what you pay for. For people who want something a bit more affordable, are where it's at.
They're pricey, but the image quality you get from Moment's lenses is simply the best around.
While Apple's smartphone camera is consistently one of the best, a smartphone lenses, which fits over you phone's lens, can expand the types of photos you shoot or videos you capture.
While expensive—each lens costs between $95 to $655—the images from Moment's lenses (telephoto, wide angle, macro, and fish-eye) are some of the best we've seen from any smartphone camera lens attachment.