Charmin's Sit or Squat Cost: Free An odd but useful utility, Charmin's Sit or Squat app gives iPhone users locations of the nearest public bathrooms, complete with cleanliness reviews and availability of handicapped access or changing tables. The app uses GPS to determine your location and displays on a Google map nearby restrooms found in coffee shops, stores and restaurants. It also shows -- on the map -- if the bathroom is currently available (a red box means it's currently closed; green means it's open). Ratings related to cleanliness are available; each bathroom is rated either a "sit" (meaning it's clean enough to use) or a "squat" (you're better off going somewhere else). Sit or Squat has data on more than 65,000 toilets around the world.