Smart Vaults for Testnet Available on iOS Testflight

"Smart Vaults are miniscript-based, P2TR Bitcoin wallets that use Nostr to coordinate metadata and PSBTs. Users create a single “account” (mnemonic) with the mobile app, and that key is used for both Nostr events and Bitcoin transactions."

https://www.nobsbitcoin.com/smart-vaults-for-testnet-available-for-ios-on-testflight/