Free VPN vs Paid VPN: What You Actually Give Up — Using Proton as the Honest Test

When free is fine

Learning the app, light browsing, and checking whether a kill switch works on your laptop. Free servers are slower and in fewer places on purpose. That is acceptable if the company has a real paid business. It is not acceptable if the app is the product and you are the inventory.

A legitimate free tier is a funnel into a paid plan: limited countries, slower servers, maybe a data cap. The company still has to pay for electricity. A mystery 'unlimited free forever' app has to get paid another way — ads, selling bandwidth, or worse. That is the category lesson this article is actually about. Proton is the honest example, not the only VPN on earth.

Security researchers and journalists have repeatedly found free VPN apps that inject ads, fail to encrypt as promised, or leak DNS. FTC actions have targeted deceptive VPN marketing before. You do not need a computer-science degree to apply the rule: if the VPN is free and the company is unknown, assume someone else is paying — often with your traffic.

Ranking for the options in this article

When paid is worth it

Pay when you need more countries, all-day speed, or Secure Core. Proton is the paid example this article uses because the free plan is real and the company has a privacy story you can read. If your constraint is unlimited household devices, that is a different comparison — see the Surfshark review.