A lot of the instances get silly, I juggle between three apps to make sure I get all my notifications 😅.
Discussion
There are no instances on nostr. It's relays. If you have the same relays on all apps, you should see the same stuff
I thought instances is what people called Apps like Primal, Damus, and Amethyst, etc.
I could be mistaken 😅, not familiar enough with the Nostr technicals enough yet.
That's called either app or client.
Instances are a #fediverse concept, from apps like Mastodon and works a bit different than relays here.
The main advantage on #nostr is that users can freely choose relays and have multiple ones, which makes censorship (e.g. through an instance admin) way harder