3: Network Utility Pro ($0.99 US and rated 4+)This one offers a lot of capability for one dollar: Ping, TCP/IP port scan, GeoIP lookup, and Whois query. All the utilities work well, with the exception of GeoIP lookup. It never provided the correct location. For more details about Network Utility Pro, refer to Codepacity's Web site.
Information is my field...Writing is my passion...Coupling the two is my mission.