Yes, Shuo is completely open source and free. The Pro version offers cloud recognition and other advanced features for a monthly fee. You can freely choose which version to use. 是的，说说输入法是完全开源免费的。Pro 版提供云端识别等高级功能，按月付费。你可以自由选择使用哪个版本。

Download and install Shuo, then select "Upgrade to Pro" in settings. Multiple payment methods supported. 下载并安装说说输入法后，在设置中选择"升级到 Pro"即可。支持多种支付方式。

Very safe. Shuo's core principle is local-first. Voice data never leaves your device. We do not collect, store, or analyze any of your input. 非常安全。说说输入法的核心原则是本地优先，语音数据不出设备。我们不收集、不存储、不分析你的任何输入内容。

Currently supports macOS and Windows. Linux support is in development, stay tuned. 目前支持 macOS 和 Windows。Linux 支持正在开发中，敬请期待。

You can cancel anytime. After cancellation, you can still use all Open Source features. 可以随时取消订阅。取消后，你仍然可以使用开源版的所有功能。