Netscan is described as 'Find out what else is on the network with your iPhone. Find other servers, router printers and other wifi devices. Even discover devices that were recently online but are already offline or "stealth"' and is an app in the Network & Admin category. There are five alternatives to Netscan for Windows, Android, iPhone, Android Tablet and iPad. The best alternative is Fing, which is free. Other great apps like Netscan are Advanced IP Scanner (Free), Port Authority (Free, Open Source), SoftPerfect Network Scanner (Paid) and Trogon MAC Scanner (Paid).
Reliable and free network scanner to analyse LAN. The program shows all network devices, gives you access to shared folders, provides remote control of computers (via RDP and Radmin), and can even remotely switch computers off. It is easy to use and runs as a portable edition.
A handy systems and security-focused tool, Port Authority is a very fast Android port scanner. Port Authority also allows you to quickly discover hosts on your network and will display useful network information about your device and other hosts.
Trogon MAC Scanner is a professional tool designed to scan networks for IP and MAC addresses. You will always know which computers and other network devices connected to the network, who are used them and where they are located.