"廁所在那" is a free iPhone app designed to help you locate the nearest restroom based on your current location. It offers the convenience of finding not only restrooms but also nearby gas stations, Starbucks, 7-11, FamilyMart, McDonald's, and KFC. The app allows quick filtering of amenities such as gas stations, making it a handy tool for travelers or those in need of urgent facilities.

To use the app effectively, users are required to enable their location services and can seamlessly integrate with Google Maps or Apple Maps for navigation. "廁所在那" aims to swiftly guide users to nearby convenience stores, gas stations, and other locations to address their restroom needs promptly.