hrefStack vs Sealis

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

hrefStack compared with Sealis
Detail	hrefStack	Sealis
What it does	AI agent that grows your search traffic through autonomous SEO content research, writing, publishing, and ranking tracking	Your voice, kept yours, wherever AI writes or speaks for you
Stage	Startup	Not given
Founded	2024	Not given
Based in	Not given	AU
Pricing model	Freemium	Freemium
Pricing	Free plan: 10,000 words per month, no credit card required. Starter plan: $45 per month for 100,000 words per month. Pro plan: $69 per month for unlimited words. All plans include AI images, CMS publishing, and AI Agent access. Yearly billing available with 17% savings.	Free: A$0/month with 10 rewrites per month and 1 voice. Pro: A$11.99/month with 150 rewrites per month (currently on waitlist). Studio: A$34.99/month for up to 5 clients, each with their own voice, 300 rewrites per month, and client approval pages.
Key features	Autonomous keyword and competitor-gap research Publication-ready article writing with six-dimension quality self-audit Scheduled publishing to your CMS including WordPress, Shopify, Wix, Ghost, and Sanity Google ranking and AI-search citation tracking across ChatGPT, Perplexity, and Google AI Overviews Automatic refresh of underperforming content Content calendar planning Full editorial control with approval gates before publication 10 free SEO tools with no signup required	Rewrite drafts in your voice while keeping facts, numbers and dates unchanged Measure drafts for stock phrases, rhythm, word choice and punctuation Save and learn from your writing style with every correction Studio: save a voice per client with approval pages Free Score tool with no signup required
What makes it different	AI employee that executes the full content pipeline, not a writing assistant that produces drafts Optimization for both traditional search engines and AI-powered discovery surfaces like ChatGPT and Perplexity Grounded in your actual search data with full Search Console integration Multi-surface AI visibility tracking across rankings, AI Overviews, ChatGPT, and Perplexity citations	Automatically flags when rewrites drop or add numbers, dates or names without user approval Learns from your corrections to improve rewrites over time Preserves formality level and register while removing template phrases Works across text, audio and visual formats with consistent voice Built on published research and test results
Community votes	0	0
DR (Domain Rating by Ahrefs)	15 −1 (down) since last check	1 no change since last check
Trust Flow (Majestic)	21	3
Citation Flow (Majestic)	27	20
Referring domains (Majestic)	91	6

5 details filled in for both companies.

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