Show HN：信用卡超级应用——追踪额度、查找贵宾厅、添加优惠（iOS版）
一款iOS信用卡管理工具，可追踪各卡可用额度，标记已使用额度并在续卡后自动恢复显示。整合美国运通、第一资本、大通及Priority Pass等多家机场贵宾厅信息，支持按持卡筛选。通过分类页面推荐最佳消费卡种及附近优惠。借助Chrome扩展可跨卡添加和追踪Amex/Chase卡优惠，同时支持积分/证书/兑换追踪及实时增值权益查询。
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