You can buy more Gem or Bet Coin by visiting the Shop in game. You can access the Shop in to ways:
- Select the Store button on the bottom right of the Main Menu and ensure you are viewing the Currency tab.
- Tap the (+) icon beside your Gem or Bet Coin total at the top left of the screen
Once you're in the store you'll first be presented with today's Daily Deals. You can find Gems or Bet Coin bundles by scrolling to the right.