Didn't easily connect to Amber, for one.

It also doesn't seem to have any further development happening for nearly a year now.

Other than that, Spring really is great! NWC support, built in signer application. The ability to add whatever Nostr web app you want...

Nestr is going to have its work cut out for it to catch up, but @KoalaSat can get it done. Definitely keeping an eye on this project.