Each week PSFK features many new and innovative apps. To highlight the some of the best, we’ve compiled a roundup of the most interesting and creative apps written about on the site this past week:

Digital Toothbrush Keeps Track Of How Often Users Brush Their Teeth

Sync Multiple iPhones Together To Create One Giant Speaker

Nissan Introduces A Car That Parks Itself

Become The DJ At Any Nightclub By Interrupting Their Playlist With This App

Shopper Receives Remote Fitting To Help Buy The Perfect Dress [Future of Retail]