You can try the shareware version of this software for free for 30 days, but then you'll have to pay to keep using all the features.

shareware 是由 share（分享）和 software（软件）组成的复合词，指"共享软件"。这种软件允许用户免费试用一段时间，之后需要付费才能继续使用完整功能。