Yes, Prinker is a legitimate company. It offers a high-tech temporary tattoo printer that works in conjunction with the Prinker app, which serves as a massive database for designs. Users can also upload their own custom designs or even create designs in the app itself. The tattoos are both safe and non-toxic, and use cosmetic-grade inks to keep your skin safe. Reviews of Prinker on various platforms have been positive. However, as with any product, experiences may vary, and it's always a good idea to read reviews and do your own research before making a purchase.