Natrelle 3D Breast Visualizer is an iPhone application developed by Allergan Inc. It falls under the category of Education & Reference, specifically in the field of Medicine. The app, powered by Crisilax, offers a unique experience for women to virtually 'try on' various sizes of breast implants to help them select the most suitable option.

Users can visualize different breast implant sizes through the app, aiding them in making informed decisions about their desired appearance. It is important to note that the image results provided are for simulation purposes only and may not accurately represent actual outcomes. Natrelle 3D Breast Visualizer provides a convenient and innovative tool for individuals considering breast augmentation.