I’ve been using nunchuk on iOS to play with SatsCards, TapSigners, and the nfc-enabled coldcard (mk4).

I have a couple wallets in nunchuk to play with the (very slick) chat-enabled signing to do multi-person wallets, but the wallet I play with the most is a 2/3 multisig with one key on my phone, one on a tapsigner, and one on a coldcard. I keep the tapsigner in my pocket, so wherever i go if i want to send someone bitcoin its just sign with the phone key, type in my tapsigner pin and tap the card, done. If i lose the tapsigner, i can use the coldcard over nfc to sign or roll to a new wallet.

The satscards have been great to play with too. Nunchuk supports them very well. There are a few advanced features that right now you can only really do with the cktap cli and a usb nfc reader, but for the basic “unseal and sweep” functions, nunchuk works great.

So far the experience has been really great. I’m someone who has played a LOT with multisig wallets on the phone, which usually means scanning animated qr codes between your phone and a laptop, or using a lightning to sd dongle, or using icloud to shuffle psbts around. All of those work but kinda suck. NFC is absolutely magical.

I’m excited to see more apps and hardware support nfc (need to play with it in zeus). I think it will be a big part of mobile bitcoin ux in the future.