nsec.app?

No, I don’t think there’s any signer for iOS. Most clients ask you to add the nsec…

https://github.com/haorendashu/nowser by nostr:npub19yeqjawls407xjnmgkk6yss7936pcd7qzd5srlj8wye6j8433vrsjazqwk

I think nostr:npub1yaul8k059377u9lsu67de7y637w4jtgeuwcmh5n7788l6xnlnrgs3tvjmf is building one

nostr:npub1xtscya34g58tk0z605fvr788k263gsu6cy9x0mhnm87echrgufzsevkk5s is considering in nostr:npub18m76awca3y37hkvuneavuw6pjj4525fw90necxmadrvjg0sdy6qsngq955

nostr:nevent1qqszyhgpt5vr23a2mvjh7pxspt04vlycj5gz8z2wj67fgfukncn3aksx65wpy