Yes, both Social Combiner and TrueSocialMetrics offer a Free Trial.
Social Combiner is designed for Freelancers, Medium Business and Small Business.
TrueSocialMetrics is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Social Combiner Starts at $19/Month whereas for TrueSocialMetrics Starts at $1,000 when Billed Monthly.
Some top alternatives to Social Combiner includes Crowdfire, SocialBee, Iconosquare, TrueSocialMetrics, SocialTracker, Buffer, Analisa.io, Zoho Social, Planable, Later, Gramreports, ThoughtMetric, SocialStats, SocialGest and Sharemyinsights.
Some top alternatives to TrueSocialMetrics includes Minter.io, Twitter Analytics, Social Opinion, ListenFirst, Planable, Social Combiner, Vaizle, Socialinsider, SocialStats, Analyser PRO, SocialBee and GetSocial.