Reward coins are the free currency. You can earn them by:

• Checking in daily — a seven-day streak with a different reward each day
• Signing in for the first time
• Turning on notifications

The Rewards screen shows the earning options that are currently available.

Expiry

Reward coins expire 30 days after you earn them, and the Rewards screen warns you when a batch is within a week of expiring. Profile → My Wallet → Reward Coin Validity lists every batch with its own expiry date.