Betty's Burgers (one of Retail Zoo's brands) has launched Betty's Beach Club Rewards. Available only through their app it has three tiers based on annual visits (Bronze is 0-5 visits, Silver 6-10 visits and Gold 11+ visits) with increasing tier determining birthday reward items of increasing value (valid for 7 days). Customers earn 10% of their spend back as Reward Dollars which can be redeemed only against full price items. Rewards are capped at $200 and expire if there's no activity for 6 months.