I have been searching for a great watch only Bitcoin wallet on iOS for years, and I have finally found one recently: **“Coldbit Pro”:**
You can import multiple Bitcoin wallets (Trezor, Ledger, Electrum, etc.) into the app and see all your transactions by only exposing the master public key. It can calculate and show you all the Bitcoin addresses you own base on the master public key you imported.
You can also add labels to Transactions and Addresses.
It supports SegWit (addresses beginning with 3) and Native Segwit (addresses beginning with bc1) so ypub and zpub are also supported in addition to xpub.
I find this app pretty useful for myself, and I hope this app could also be useful for you.
View Reddit by kent_shelby – View Source