The 2.5 version of FlowVPN for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. FlowVPN for Mac lies within Internet & Network Tools, more precisely Network tools. The actual developer of this free Mac application is Portable Ltd. We recommend checking the downloaded files with any free antivirus.
From the developer:
Flow VPN is a full service VPN provider for all your devices. Using this application, you can stay secure with unlimited data through a global network across 50 countries with hundreds of servers. The tool supports connecting up to 5 devices. It protects your privacy, hides your location and your IP so you can browse privately.
You may want to check out more software for Mac, such as Covenant Eyes, AirGrab Network Packet Analyzer or NetStatInDock, which might be related to FlowVPN.