Android: If you manage a wireless network, or just like being able to see who's on your wireless network at any time, ezNetScan for Android gives you a powerful tool for scanning, collecting data on and reporting on the networks you connect your phone or tablet to.
ezNetScan scans the networks you connect to to show you how many devices are connected to it, and displays them to you with their local IP addresses, hostnames, MAC addresses and more. If you have SNMP enabled on the devices on your network, it can collect SNMP data and show you installed applications and other useful information about the systems on your network. ezNetScan will even port scan specific devices, scan active services, and perform pings and traceroutes inside and outside your local network. The app can even send Wake-On-LAN requests to devices on your network for you.
The app doesn't offer intrusive tools, and it won't sniff packets or help you spy on a device's connection, but if you want to check and see if someone's sitting on your home Wi-Fi, or you're a network admin at a small business and need a useful — albeit lightweight — tool to check on your wi-fi network from your phone, this app is worth checking out. ezNetScan is free to download at Google Play, and the developers say iOS and Windows Phone versions are coming soon.