An SPV, BIP32 deterministic bitcoin wallet for iOS.
KnC Wallet is open source and available under the terms of the MIT license. It is a fork of the excellent breadwallet.
WARNING: installation on jailbroken devices is strongly discouraged
Any jailbreak app can grant itself keychain entitlements to your wallet seed and
rob you by self-signing as described here and
including <key>application-identifier</key><string>com.kncwallet.*</string> in
its .entitlements file.