The custodial wallet is a NWC enabled wallet too, so user's can take that wallet and pop their connection string into a NWC Nostr app and experience the interoperability of Nostr. They can use NWC on Amethyst, Primal, Damus, Wavlake, Nostrudel, Nostur, Snort, and many more apps.
The nostr:nprofile1qqszpxr0hql8whvk6xyv5hya7yxwd4snur4hu4mg5rctz2ehekkzrvcpzamhxue69uhhyetvv9ujuurvv438xarj9e3k7mgpr9mhxue69uhkummnw3ezu7n9vfjkget99e3kcmm4vsq3yamnwvaz7tm0venxx6rpd9hzuur4vg5xqmxe onboarding process with a custodial wallet is great for new users, IMO. Zero KYC to get started with Nostr.
Discussion
It's excellent
nostr:npub1xv8mzscll8vvy5rsdw7dcqtd2j268a6yupr6gzqh86f2ulhy9kkqmclk3x the wallet in nostr:npub1yzvxlwp7wawed5vgefwfmugvumtp8c8t0etk3g8sky4n0ndvyxesnxrf8q worked with Alby + Castamtic.