Afon Weng

把HRV变成易懂的三个级别还是挺有意思的。更好的了解自己的身体。设计也很不错。买了年度订阅。想着可以共享给家人，但发现还是只有我一个人用。

I've been using Gmail for years as my primary email address. It's a great product with a lot of useful features, and it's free to use. The free storage space is also more than enough for most people. The only thing I would like to see improved is the UI. It could be more modern and user-friendly.