六款脑力训练小游戏，加上每日挑战与全能认知竞技场。所有训练记录都保存在你自己的手机上。
我的训练记录会同步到云端吗？
不会。所有记录都保存在你这台设备本地，不上传任何服务器。这也意味着换手机或删除 App 后，记录无法找回。
订阅之后解锁什么？
全部六款游戏的进阶与无限模式、完整的全能认知竞技场，以及跨月份的长期训练历史。基础模式、每日挑战、基础竞技和本月的训练记录，不订阅也能完整使用。
怎么取消订阅？
在 iPhone 上打开「设置」，点最上方你的 Apple 账户，选择「订阅」，找到前额叶实验室后取消。订阅会在当前计费周期结束时停止，不会自动扣下一期。
换了新手机，订阅还在吗？
在，只要用同一个 Apple 账户登录。在 App 的「定价与权益」页面点「恢复购买」即可。但请注意，训练记录不会跟着转移。
可以切换语言吗？
可以。首次打开时 App 会跟随你手机的系统语言，之后可以在「我的 → 语言」里随时切换中文或英文。
Ziyu He
Six brain-training games, plus a Daily Challenge and the Cognitive Arena. Every training record stays on your own phone.
Contact
Write any time about a problem, a feature idea, or how a round felt. Including your iPhone model and iOS version helps me find the issue faster.
Are my training records synced to the cloud?
No. Everything is stored locally on this device and nothing is uploaded to any server. That also means records cannot be recovered after deleting the app or switching phones.
What does the subscription unlock?
Advanced and Endless modes in all six games, the full Cognitive Arena, and training history across earlier months. Basic modes, the Daily Challenge, Basic Arena, and this month's records are all fully available without subscribing.
How do I cancel?
On your iPhone open Settings, tap your Apple Account at the top, choose Subscriptions, find Prefrontal Lab, and cancel. Access continues until the end of the current billing period and nothing is charged after that.
I got a new phone — is my subscription still there?
Yes, as long as you sign in with the same Apple Account. Open Plans & Pricing in the app and tap Restore Purchases. Note that training records do not transfer.
Can I change the language?
Yes. On first launch the app follows your phone's system language, and you can switch between Chinese and English any time under My Lab → Language.
Ziyu He