One device burned through 14,178 free trials while my costs tripled

我们的图像生成账单在 9 天内基本翻了三倍。安装量持平，收入没有变动，没有开展活动，也没有发布新功能。我盯着仪表板看了两个晚上，才想到直接去查一下。

I had Claude dig through our cost logs and subscription data. The answer was immediate: one device made more generations than all our other users combined since early October.

我让 Claude 深入挖掘了我们的成本日志和订阅数据。答案立竿见影：自 10 月初以来，单台设备生成的图像数量超过了我们所有其他用户的总和。

It cycled through 9 different Apple IDs, each starting a fresh 3-day trial, cancelling before converting. Never paid a cent. The problem was obvious in hindsight.

它轮换使用了 9 个不同的 Apple ID，每个 ID 都开启了为期 3 天的新试用，并在付费转换前取消。一分钱没花。事后看来，问题显而易见。

Our trial limit checked per account, not per device. So every new Apple ID meant a fresh unlimited trial. And yes, unlimited on purpose.

我们的试用限制是按账户检查的，而不是按设备。因此，每一个新的 Apple ID 都意味着一次全新的无限试用。没错，无限试用是故意的。

Our paywall and listing literally say unlimited generations, and quietly capping something you advertise as unlimited is the kind of thing that gets you rejected from app review and a wave of angry reviews.

我们的付费墙和应用列表明确写着“无限生成”，而悄悄限制你宣传为“无限”的功能，这种做法会导致应用审核被拒，并引发一波愤怒的评论。

We’re adding per-device caps now, but a lot of real families share one iPad and I don’t want to block them. Per device, per payment method, a daily generation limit during trial—has anything actually worked for you without annoying normal users?

我们现在正在增加按设备限制，但许多真实的家庭共用一台 iPad，我不想屏蔽他们。按设备限制、按支付方式限制、试用期间每日生成上限——有没有什么方法既能奏效，又不会惹恼普通用户？