I am considering buying an Nvidia Shield TV, but my question applies to Android TV in general: is it possible to install ordinary, i.e. non-Android-TV optimised apps through the google play store?
Let's say I want to install a VPN client; will google play show me the client only if there is a TV-optimised version? Will it let me download the app anyway, maybe telling me it's not optimised? Or do I have to download the apk and install it manually (which means no automatic updates)?
Thanks!
If it's grandparents, I think you absolutely will need to avoid non-TV optimised apps. It will just be too awkward and unstable for them.
Assuming you are in the UK, if you want apps for UK TV channels, All4 is missing, My5 and UKTVPlay. They are available on the Amazon FireTVstick4k, however.
Live Channels can be good depending on your source, but glitchy with HDHomerun in my experience.
There are quite a few VPN apps optimised for TV in the play store. Bear in mind that activating it might mess up streaming services like Netflix and Prime Video. More complexity for them.
Getting foreign channels is really tough unless there is a specific optimised TV app.
Have you investigated IPTV? There are a few options for that which could work, depending on how you'll get the foreign TV streams.
Last resort would be a custom Kodi set up with add ons, but difficult to get stable and a lot of effort.