true. any of them open the same content.

welcome to nostr.

check out #nostrarabia

Yes. It's all the same protocol. I'm using Amethyst in my Android phone right now.

Yup doesn’t matter

The thing that's mindblowing is that your private key is what opens the door to nostr for you. Any given client/app out there is just a portal into nostr, so you're free to choose whichever you like, whenever you like.

That's the beauty of Nostr. You can use any number of clients, sometimes I switch between 2-3 of them depending on my mood. Regardless of what you choose, you have the freedom to take your data with you.