Privacy, terms, and support for LearnHub iOS
遇到导入、阅读、购买恢复或 AI 服务问题，请写信至 luosilent@gmail.com。为帮助定位，可附上 App 版本、iOS 版本、设备型号和复现步骤；请不要发送 API Key、私人文章全文或付款卡信息。
我的笔记在哪里？ 笔记和高亮默认保存在设备上，可在“手记”及文章的“学习记录”中查看。当前没有跨设备云同步。
为什么 AI 无法生成？ Apple 设备端模型需要兼容硬件、系统和可用模型。远程 AI 需要你自行配置有效的 HTTPS 服务与 API Key；服务限制或费用由提供方决定。
如何恢复永久版？ 在 App 的购买页面使用“恢复购买”，并确认使用原购买时的 Apple 账号。若未恢复，请提供 App 版本、系统版本和非敏感的错误描述联系我们。
For help with imports, reading, restoring purchases, or AI configuration, email luosilent@gmail.com. Include the app and iOS versions, device model, and steps to reproduce where helpful. Do not send API keys, full private documents, or payment card details.
Where are my notes? Notes and highlights are stored on your device. Find them in Notes or an article’s learning records. Cross-device cloud sync is not available.
Why is AI unavailable? Apple’s on-device model requires compatible hardware, system support, and an available model. Remote AI requires your own valid HTTPS endpoint and API key. Provider limits and charges depend on that provider.
How do I restore lifetime access? Use Restore Purchases on the purchase screen with the Apple account used for the original purchase. If it fails, email us the app and system versions and a non-sensitive error description.