A simple smart contract that acts like a wallet - it stores and sends funds

EtherWallet.sol

pragma solidity ^0.8.0;

contract EtherWallet {
    address public owner;
    
    constructor(address _owner) {
        owner = _owner;
    }
    
    function deposit() payable public {
    }
    
    function send(address payable to, uint amount) public {
        if (msg.sender == owner) {
            to.transfer(amount);
            return;
        }
        revert('Sender is not allowed');
    }
    
    function balanceOf() view public returns(uint) {
        return address(this).balance;
    }
}