If you want to test the Javvy wallet without risking REAL crypto, then we have just the thing for you!
Download the TESTNET version of the app and request TESTNET crypto from the following faucets:
https://testnet.manu.backend.hamburg/faucet (for Bitcoin, verified working: 04.14.2018)
http://faucet.ropsten.be:3001/ (for Ethereum, verified working: 04.14.2018)
Once there, you copy/paste your RECEIVE wallet address into the respective faucet and request some FREE TESTNET crypto! After a few minutes (give it time, because the faucets are SLOOOOW!), the coins should arrive in your wallet.
To test sending, you would just copy/paste their wallet address into the SEND tab of the Javvy wallet for the respective cryptocurrency, enter an amount, and click SEND (Get Tx fee is optional). After some time, it should show as confirmed on the TESTNET blockchain.