Let's be honest here and I think everyone can agree on this: There is no such thing as a "Free VPN". You ALWAYS pay them in some way. If it's not money it's your data, like @pry0cc said.
I recommend AirVPN by far. It is super cheap (7€ a month is very VERY little) and they have proven their trustworthiness over the years. Plus it works on pretty much any device.
and let's be honest, 7 euros is nothing, I earn that much by just mowing old people's lawns on Saturday noon. Don't tell me you're not up for that .