EtherWalletKit is an Ethereum Wallet Toolkit for iOS.

I hope cryptocurrency and decentralized token economy become more widely adapted. However, some developers hesitate to add a crypto wallet on apps since blockchain and cryptocurrency are complex and require many new knowledge.

Don't worry.
With EtherWalletKit, you can implement an Ethereum wallet without a server and blockchain knowledge.

• Creating/Importing an account(address and private key)
• Checking Ether and tokens balance
• Sending Ether and tokens to other addresses
• Browsing token information
• Testnet(Rinkeby & Ropsten) support
• BIP39 Mnemonics

• Browsing transaction history
• Keystore import / export
• Custom configuration / advanced transactions
• Multiple accounts
• Third party APIs
• ERC-721 supports

To integrate EtherWalletKit into your Xcode project using CocoaPods, specify it in your Podfile:

pod 'EtherWalletKit'

import EtherWalletKit

// Generate a new account with its new password.
try? EtherWallet.account.generateAccount(password: "ABCDEFG")

// Import an existing account from its private key and set its new password.
try? EtherWallet.account.importAccount(privateKey: "1dcbc1d6e0a4587a3a9095984cf051a1bc6ed975f15380a0ac97f01c0c045062, password: "ABCDEFG")

Note: password will be encrypted and saved to the device and it will be required to access the wallet.

// Get balance of Ether
EtherWallet.balance.etherBalance { balance in
    print(balance)
}

// Get balance of a token
EtherWallet.balance.tokenBalance(contractAddress: "0xd26114cd6EE289AccF82350c8d8487fedB8A0C07") { balance in
    print(balance)
}

// send Ether to an address.
EtherWallet.transaction.sendEther(to: "0x7777787C97a35d37Db8E5afb0C92BCfd4F6480bE", amount: "1.5", password: "ABCDEFG") { txHash in
    print(txHash)
}

// send a token to an address.
EtherWallet.transaction.sendToken(to: "0x7777787C97a35d37Db8E5afb0C92BCfd4F6480bE", contractAddress: "0xd26114cd6EE289AccF82350c8d8487fedB8A0C07", amount: "20", password: "ABCDEFG", decimal: 18) { txHash in
    print(txHash)
}

Note: password should be eqaul to the password of wallet created. Also you can put gasPrice as an extra parameter to set gas price for the transcation.

For full documentation, please see THIS.

• Nothing will be sent to a server. Everything will be worked on the local device and Ethereum Blockchain.
• You dont need to download and sync the nodes because Infura is doing it for you.
• password for wallet is equal to the password for the keystore file. Always make sure a password is long enough for security.

• Make sure you have a GitHub account
• Create a GitHub pull request for your contribution
  • Clearly describe the issue or feature.
• Fork the repository on GitHub
• Create a topic branch from where you want to base your work. (Gitflow is welcome)
  • Please avoid working directly on the master branch.
• Make sure you have added the necessary tests for your changes and make sure all tests pass.

EtherWalletKit is available under the MIT license. See the LICENSE file for more info.