半年的限制是指,比如你已经买了 macOS 的版本,会得到半年 iOS 版本的新功能使用权。
https://mindnode.com/article/mindnode-plus-faqFor single platform customers (e.g. you purchased the Mac version and would like to use it on your iOS device) we are offering a 6-month free trial. At the end of the trial period, you will be migrated to a yearly MindNode Plus subscription. During the trial, you can cancel MindNode Plus at any time and you will not be billed.
If you choose to cancel your MindNode Plus subscription, you will be converted to the original state you had before you subscribed: Full access to MindNode 7 on your original platform, and your second platform will be reverted to the Free Editor.