FM Station Locator 1.0
the author of this app says:
This program is great for travelers who want to stay tuned to their favorite broadcasts. It actually calculates estimated field strength for each nearby station and tells you which station has the strongest signal. The program is designed for extendibility, so if you have a radio network that you want to use with this program, contact the author via e-mail.
The program has several options, but in this release, the only choice that produce meaningful results is Find Station by Field Strength and Lookup by DB.