Ah understood.

It's definitely a work in progress. For example you can't read or write DMs using it (how do you send the unencrypted DM from the signer to the client securely.

So I wouldn't buy it expecting to use it as your daily driver, but if you want to play to understand the way key security may be heading it functions well.

This is an early review I wrote which may be helpful if you want to understand it better:

nostr:naddr1qvzqqqr4gupzp6pmv65w6tfhcp73404xuxcqpg24f8rf2z86f3v824td22c9ymptqqxnzde4xvunqvekxqergv35vvrnr3