(Telecompaper) Opera released a free and unlimited VPN app for Android after initially releasing the iOS version in May. The new app lets people enhance their online privacy, block ad-tracking cookies, access more online content, extend the geographical reach of apps and test the security of Wi-Fi networks. The iOS version has already been downloaded by more than 1 million users. The Wi-Fi test tool in Opera VPN will scan a Wi-Fi network to check if it's public or private, if it's encrypted, the number of other devices that share the same connection, if the IP address and the location are exposed, and if others can monitor or sniff device details. If the test tool detects any weaknesses, it will advise the user to enable the VPN.