Nunchuk founder here. Thanks for the mention @HardRich !
@k00b hit the nail on the head. It's both true that Nunchuk services are newer relative to Unchained and Casa, and that marketing is hard. We currently don't spend any money on marketing and would rather focus our energy and resources on building an excellent product first.
So we rely on Bitcoiners like yourself to spread the good word (such as this thread!). We've had really positive feedback since launching our subscription services, and are working on several projects that I think will take things to the next level.
If you or anyone have feedback on things you'd like to see in Nunchuk, let me know!
(Also if I may add, our inheritance planning feature is the first in the industry that doesn't require KYC.)
I started using your wallet a few weeks ago after I got some tapsigners and satscards. I have to give nunchuk a 10/10 for UI/UX. Simple, clean, self-explanatory, idiot-proof... Also, brilliant move supporting the various coinkite NFC products. I've been handing satscards out to people as the ultimate form of orange pill and nunchuk is the only app that supports them.
Thank you for a great app, and thank you for coming on here and giving us the opportunity to say thanks :-).
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Thank you. I'll make sure to pass that along to our team. I'm sure they will appreciate it!
RE: Coinkite. The Coinkite team has proven time and again to be incredible builders, continuing to churn out great hardware products for Bitcoiners. We have been working closely with them and very glad to be partners. A hardware-software one-two punch :)
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Btw, curious if you have had a chance to check out advanced features like Coin Control and CPFP/RBF? They make managing on-chain stuff a lot easier IMHO.
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I'm kinda new to using bitcoin. I've mostly been hodling till I joined SN a few months ago. I only recently heard of the concept of coin control, but yes, I did use labeling and tagging features on Nunchuk (no video needed, which again, is a sign of a great app). Not sure what RBF is but I did use CPFP once.
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Thos will help:

RBF explained in 4 slides: #209507
CPFP explained in 4 slides: #211273
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Great visualization. Love it!
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Got it.
So RBF and CPFP are both fee-bumping techniques. They can be useful when your transaction gets stuck in the mempool for too long.
RBF = Replace-by-fee CPFP = Child-pays-for-parent
RBF can be used to fee-bump outgoing transactions, while CPFP can be used to fee-bump both incoming and outgoing transactions.
Here is a great introduction article from Bitcoin Optech: https://bitcoinops.org/en/scaling/fee-bumping/
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Greetings, does Nunchuk have plans to add Lightning functionality?
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Hey @Sasquatch ! Great question. I won't rule out layer 2 integration (things like LN, sidechains, statechains, etc.) in the far future. However, currently we want to focus on solving self custody challenges on the base layer first (via multisig).
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Thank you. One more question. Can you tell us about the escrow feature? And is that available on the app, or just in desktop?
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Sure. The "escrow" wallet is something we introduced a long time ago. It is a single-use wallet, meant to hold funds temporarily.
What it actually does under the hood is that it uses public keys, instead of EXTENDED public keys (a.k.a. XPUBs). This means that the wallet contains a single Bitcoin address. You move funds into that address, then move everything out after some time or some condition has been met.
It is available on both mobile and desktop.
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Hey @hugohanoi, recently I played with nunchuk with some friends and I noticed there are some bugs. May I know where is the best way to report them?
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Sure!
You can send us an email at support@nunchuk.io or file an issue in the corresponding GitHub repo (https://github.com/nunchuk-io ).
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Is there a reason that Nunchuck isn't open source on iOS?