The LensMag ML-515 is a great iPhone accessory. For $19 you get two magnification lenses housed in a small case. The lens attaches easily to your iPhone through a magnet in the lens. Overall, the lens stays in place and does not move while in use. It can accidentally be moved with the swipe a finger, but that did not happen while I was using it. The magnet is strong, but not without a little give.
Overall, I was happy with the images produced by the LensMag. Some were slightly soft, but this was mostly due to user error (camera shake) than a function of the lens. Unfortunately, camera shake can a big issue when taking macro shots. Using a mini tripod would greatly reduce this issue. However, I generally do not carry one and did not use one for this review. About 1 of every 4 images were very sharp. 2 out of 4 were slightly soft and 1 out of 4 was unusable. Even on a large computer monitor the sharp images looked really good.
The case fits nicely in your pocket or your purse and can be carried anywhere. If you are interested in a macro lens, but don’t want spend the money on an Olloclip (or do not want the additional lenses) the LensMag is a great option. For $19 this iPhone accessory is a no-brainer. As a macro photography addict I can easily recommend this lens for your iPhoneography.