Yes, both NotionMetrics and GA-Insights offer a Free Trial.
NotionMetrics is designed for Individuals, Medium Business and Small Business.
GA-Insights is designed for Large Enterprises, Medium Business and Small Business.
Pricing for NotionMetrics Starts at $5/Month whereas for GA-Insights Starts at $15/Month when Billed Yearly.
Some top alternatives to NotionMetrics includes ReclaimAI, ZoomInfo InboxAI, Baremetrics, Mainmetrics, GA-Insights, Metric.ai, Easy Insight, Otherboard, Qualified, Workvivo, Analytics4Notion, SharpDash, IFTTT and OneMetric.io.
Some top alternatives to GA-Insights includes Shortlist Metrics, Kindmetrics, Makko, JustControl.it, Vidooly, Metric.ai, Slymetrix Analytics, Daily Metrics, fullstats and Quickmetrics.