If you absolutely must use a wallet that supports shitcoins and want these kinds of features, I'd advise going with Keystone (~170) over iCOIN. Source code is easier to verify.

But otherwise, recommend one of the following

- Foundation Devices Passport (~260)

- Coinkite Coldcard (~150)

- Seedsigner (~75)

- Jade (~65)

Even Trezor (with a passphrase) and Ledger (with it's leaks) are more suitable choices than iCOIN due to their broader support