I remember Spring browser by nostr:npub1xdtducdnjerex88gkg2qk2atsdlqsyxqaag4h05jmcpyspqt30wscmntxy. Used the heck out of it.

This seems like a great replacement. Using a browser extension like Alby or Nos2x on mobile is terrible UX, but having signing built into a Nostr web browser, particularly when it can sign using Amber, is INCREDIBLE. Well done!

I do notice that the app crashes occasionally after approving signing events in Amber.