全国ラーメンマップ is a free iPhone application that allows users to search and view information about ramen shops across Japan. With this app, users can easily find nearby ramen shops using GPS location data, displayed on a map. The app also provides a list view of the ramen shops, sorted by proximity to the user's current location.

In addition to the map and list view, users can click on individual ramen shop names to access detailed information about each shop. This includes photos, website URLs, addresses, phone numbers, and reviews.

One of the standout features of 全国ラーメンマップ is the navigation functionality, which allows users to navigate from their current location to the selected ramen shop using the app's built-in navigation system.

Whether you're a ramen enthusiast or simply looking for a delicious bowl of noodles in Japan, 全国ラーメンマップ is a useful tool for finding and exploring a wide range of ramen shops across the country.