Yes, both SurferSEO and ContentIn offer a Free Trial.
Pricing for SurferSEO Starts at $89/month whereas for ContentIn Starts at $15.85/month.
SurferSEO offers several advantages, including Comprehensive content strategy, Keyword research tool, Real-time optimization feedback, Content editor with guidelines, Outline Builder for structure and many more functionalities.
The cons of SurferSEO may include a Doesn't support all languages, No mobile application, Limited integrations, No real-time collaboration. and No multi-user collaboration
ContentIn offers several advantages, including Specifically designed for LinkedIn, Content creation platform, Promotes quick content creation, Assists in personal branding, Offering both free and paid plans and many more functionalities.
The cons of ContentIn may include a Limited to LinkedIn content, No video or slideshow support, Limited free plan, No multi-account support. and No automatic multi-language translation