A: No. The filtering driver operates at kernel level with minimal latency (under 5ms). Premium vs Free have the same performance.
If you haven’t purchased a key yet, download the free 7-day trial from GlassWire’s website. Test the premium features for 48 hours. You will quickly see the value, and the $39 annual fee will feel like the best security investment you’ve made all year. Have you completed your GlassWire Premium install successfully? Use the "Export Logs" feature in the GlassWire menu to review the last 30 days of connections—you might be surprised at what you find calling home.
Once the progress bar finishes, the application will launch automatically. When you first open GlassWire, you will see a dashboard showing your current bandwidth usage. At the top right, a yellow banner will say "Free Trial" or "Upgrade to Premium."