MarStack vs REX

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

MarStack compared with REX
Detail	MarStack	REX
What it does	Analytics expert and auditor inside Claude that checks GA4, Google Tag Manager, consent, Meta and Google Ads with 167 expert rules and answers business questions across your marketing data.	A coding agent that runs your whole Windows PC by voice or text
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	ES
Pricing model	Not given	Free
Pricing	Free: 100 credits (no card required). Starter: $19/month for 1,000 credits. Pro: $49/month for 5,000 credits. Agency: $149/month for 30,000 credits. Individual tool calls cost 1-10 credits depending on complexity.	Free. Windows 10 or later, 64-bit.
Key features	GA4 property audits with 89 expert checks Real-browser page tracking inspection and validation Live conversion testing with form submission Business intelligence across GA4, Meta, Search Console and CRM Branded report generation in Excel, Word, PDF and PowerPoint Integration with Claude, Cursor and VS Code via MCP	Verifies results before completion Voice and text input Runs on Windows 10 or later, 64-bit Compatible with any AI model you choose Multi-step task automation Checks live results in real applications
What makes it different	Real-browser proof of tracking, not config checks alone	Operates the entire Windows desktop, not just the terminal Verifies task completion by checking real application results Completely free with no subscription required Voice control for hands-free operation Measured performance on public benchmarks
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	2 no change since last check
Trust Flow (Majestic)	0	2
Citation Flow (Majestic)	8	24
Referring domains (Majestic)	4	15

4 details filled in for both companies.

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