Create an account on Terra Station. Be sure to write down your passphrase somewhere you won't lose it! Once complete you'll have a wallet with a URL where you can transfer money to. You can also download the app on your mobile device and turn on a chrome extension. Whenever you make a transaction to / from your wallet, the app will request confirmation before executing the transaction.

This wallet is not as simple to use as Kash.io, but provides more options.