The great LANScan application for iOS devices, is free for the weekend and if you are wary (you should be) of what’s connected to the same public WI-Fi you are connecting to, than you shouldn’t miss this utility.

This very fast and thorough security application allows you to view all the devices connected on a local network and is capable of recognizing the following:

•TCP Connect Scanning: attempting to establish a TCP connection with each IP address on the local network.
•ARP Scanning: The ARP table is scanned for any devices attached to the network that doesn’t respond to a TCP connect.
•NetBIOS Scanning: Finding all devices on the network that respond to a NetBIOS query.
•Bonjour Scanning: Scan the network for all services on the local network that are broadcasting bonjour services.
•Reverse DNS: All devices are also queried for hostname information using multicast queries.
•Port Scanning: When detailed information is requested, a very fast port scan is also displayed.
•Wake On LAN: Wake devices on the LAN which are configured for remote wake up.

LANScan usually sells for $0.99 but you can get it for free until Sunday night. Here’s the download link