Walk the City is a free travel and navigation app developed by Walk the City for Android devices. It offers a unique way to explore a city with the help of a personalized tour guide. The app is currently available for cities in the Netherlands, Belgium, Germany, and France.

The app's main feature is photo navigation that guides users with recognizable photos and clear instructions to the most beautiful spots of a city. It also provides interesting information and alerts users to special locations through photos and text. Walk the City works without GPS signal and internet connection, reducing battery consumption and data usage.

Users can download a walk in a city of their choice, select an entry point, and start exploring on their own pace. The app offers 5-kilometer long city walks, allowing users to take a break at a cozy terrace or visit a museum, based on their preferences. However, it's worth noting that not all walks are available in English yet.

Overall, Walk the City is a great app for travelers who want to explore a city at their own pace and learn about its history and culture.