TunnelBear has been in the VPN business for a long time, and its free tier is good enough for a lot of people. The company offers 2GB of data for free, has a good track record with privacy, and has a commendable commitment to making a pleasant user experience. Throughout the time you spend using this app, you'll be greeted by its mascot (you guessed it—a bear) doing bear-y things such as tunneling underground. The adorable design is a plus point, as it makes the service approachable to people who don't know anything about VPNs.

On its free tier, TunnelBear lets you run multiple connections at the same time, but its 2GB/month data limit is quite restrictive. On a mobile device, 2GB probably isn't too bad, but on a laptop or a desktop computer, you could run through that limit quite quickly. It also lets you choose the country of your VPN server's location, which is nice. Unfortunately, it lacks features such as ad-blocking or split tunneling (where you can exclude certain apps from the VPN).