By the way, if you would like to test the app without using “real” ETH, you can switch from the Ethereum Mainnet to the Ropsten Testnet, get some test Ether and bet using the "Kryptium Test" betting house.
Assuming you have already installed the app, these are the steps for switching to the test network:

• Launch the app and open the “My Money” section by clicking the “coins” icon on the top right.
• Find your betting wallet address and select “copy”.
• Open a new browser window and in the address bar type https://faucet.ropsten.be. Paste your address in the input box and select “Send me test Ether”. The service will send 1 Ether to your address at no cost. You can freely use this amount for your tests.
• After the transfer is completed, return to the betting app and open the “Settings” section by clicking the “cog” icon on the top right.
• Select “Choose another network” and then click the dropdown button. From the list that will appear, select the “Ropsten” test network and click the “Change network” button.
• After the app finishes syncing, open again the “My Money” section and transfer 0.5 Ether to your betting account using the “Transfer Money” form (click to expand). Select “From: Wallet”, “To: Betting Account”, type 0.5 in the ETH input box and click “Proceed”.  Click the default buttons in the confirmation pop-ups that will appear.
• Wait for a few seconds until the transfer is complete. You can check its progress in the “My Transfers” section.

You are ready to bet on the test network!