Yes, both Wordmetrics and Frase.io offer a Free Trial.
Pricing for Wordmetrics Starts at $30/month whereas for Frase.io Starts at $15/month.
Wordmetrics offers several advantages, including Cloud-based platform, Real-time writing guidance, Optimizes contextual DNA, Learns from competing pages, Live search data and many more functionalities.
The cons of Wordmetrics may include a Still in beta phase, Lack of mobile version, Limited language support, No API for integration. and No multi-user collaboration