If you aren't ready to pay for a subscription, there are legitimate ways to get the best experience possible:
Use the official Speedify Free version which gives you 2 GB of data monthly. This is perfect for testing the channel bonding technology on small tasks. speedify+premium+account+free+top
Many "free" installers found on third-party sites contain malware or spyware designed to steal your personal data. If you aren't ready to pay for a