Bither - a simple and secure Bitcoin wallet!
iOS is the best Operating System to safely protect your Bitcoin private keys.
With Bither wallet for iOS running on cold or hot mode, you can use Bitcoin as simple as cash or credit card.

Bither for Apple Watch
Features:
1. Realtime price of major Bitcoin Exchanges.
2. Monitoring your Bitcoin assets.

Bither Cold Wallet
Features:
1. Cold wallet running on offline mode (Backup phone).
2. Private keys are protected by password.
3. Security check for private keys.
4. Sign the hot wallet's unsigned transactions.
5. Automatically backup and recovery.
6. Easy to clone.

Bither Hot Wallet
Features:
1. Hot wallet running on online mode (Daily phone).
2. You can easily monitor your Bitcoin savings with Watch Only mode.
3. You can prepare unsigned transaction for Watch Only address, and use the Bither Cold Wallet to sign the transaction.
4. Hot wallet also supports private keys, you can save some pocket money in this kind of addresses.
5. Decentralized and P2P (peer to peer) Bitcoin wallet, no registration or login needed.
6. Realtime price of major Bitcoin Exchanges.
7. System notification for new transactions.

The source code of Bither : https://github.com/bither/bither-ios
The first library of Bitcoin Protocol for Objective-C : https://github.com/bither/bitheri