The PC and tablet versions of the paid version differ. Ghost Bear is on all versions, but Vigilant bear is PC only. Tried on an older Samsung tablet running kit kat, and a slightly newer one using marshmellow. I Will NOT install it on any of my android phones (they are for work), but I'm confident about them working on 7.1.1 up. Why no fire tv stick version? Have to use a different VPN or cast to it from a tablet that will run it. Their devs should look harder at the noob market they are aimed at, so get cracking develop one soon. In Canada, where TB is based, it's not for Netflix, but fine for IPTV and related stuff. The principal ISP's here (Bell, Rogers, Telus, Shaw) have become more aggressive blocking things lately, so a VPN is a must now. Throughput isn't horrible on a cheap 15/1 line, (the average is around 12/.9 using an in Canada server out of Vancouver) so it's mid-pack.
I live in the GTA, everything was fine "until" I installed TunnelBear on one of my 7 devices, now I can no longer watch any USA TV stations on line on any of my other 6 devices, this company is scum, they hid something in there that disabled all my other devices unless I buy their VPN, well, not going to buy their garbage, can't believe how much it slowed my device, I would rather wipe all my drives than give TunnelBear one cent!
TunnelBear is no doubt a great VPN for all the users, when I am facing server difficulty this helps me very much. It provides Good OpenVPN speed. Also, Control full security every year. This software package does not require detailed knowledge; all you have to do is click on the program and establish the connection. You can access global content from anywhere.