You can search hotsprings, co-ed bath, or private bath around your current location, and you can also search using keywords or set specify the conditions.
This app supports iPhone/iPad iOS from version 6.0.
Display spa on the map
Advanced search for specific spa
Search spas around you
Search by prefecture
Share on facebook
Able to synch with Car navigation system
Search on YouTube
Shows the direct distance to the spa
Part of the function is still available without Wifi/3G. (Map will not be displayed)
Spa's location (It will show on the map)
Co-ed Outdoor bath