Post by FreeSurf vs Kalen

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

Post by FreeSurf compared with Kalen
Detail	Post by FreeSurf	Kalen
What it does	Free social media cross-poster for posting to multiple platforms instantly	X assistant that integrates with Claude, ChatGPT and Cursor to research your niche, score AI-written posts and publish them on X
Stage	Not given	Startup
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Freemium
Pricing	Free for all posting features. X API costs passed through at cost: $0.015 per plain post, $0.20 per post with link, $0.015 per comment/reply, $0.20 per comment/reply with link, $0.01 per delete, $0.005 per post analytics read, $0.005 per comment import, $0.005 per post history import.	Starter $9/month or $90/year (100 credits per month); Pro $29/month or $290/year (700 credits per month); Ultra $49/month or $490/year (1,500 credits per month). A post costs 1 credit, 2 with a first reply or link. Unused credits last 3 months. All plans include 14 days free with 50 credits.
Key features	Smart scheduling with calendar view and drag-and-drop Unified analytics dashboard across all platforms AES-256 encrypted account tokens Import post history with analytics from connected accounts Comment management and automated replies Team organization for managing multiple social accounts Hashtag manager for organizing hashtag groups Mobile app available on Google Play	Daily niche research: top posts for keywords and X trends Weekly analysis of reference account and own account performance Post scoring from 0 to 100 using TypeSafe's Jev judgment model Automatic rewrites up to 3 rounds for posts below pass mark Schedule posts up to 3 weeks in advance Optional first reply with link below each post Credit-based pricing: 1 credit per post, 2 with reply or link Unused credits last 3 months
What makes it different	Open source and community-driven development Both web app and mobile app with API access for developers All account credentials encrypted and kept under user control	Works inside your existing AI without a separate editor or new subscription Runs no writing model; your AI writes, Kalen researches and scores Nothing publishes without your explicit approval in chat Scores posts against what works in your niche and your own best posts Publishes through X's official API with optional first reply for links
Community votes	0	0
DR (Domain Rating by Ahrefs)	11 +1 (up) since last check	19 +1 (up) since last check
Trust Flow (Majestic)	10	11
Citation Flow (Majestic)	20	17
Referring domains (Majestic)	50	25

5 details filled in for both companies.

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