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Poststack™ vs Kalen

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

Poststack™ compared with Kalen
DetailPoststack™ logo Poststack™Kalen logo Kalen
What it doesSocial media operations platform for Indian agencies X assistant that integrates with Claude, ChatGPT and Cursor to research your niche, score AI-written posts and publish them on X
StageNot given Startup
FoundedNot given Not given
Based inIN Not given
Pricing modelNot given Freemium
PricingCreator ₹2,000/mo (3 accounts, 1 seat), Professional ₹4,400/mo (10 accounts, 2 additional seats), Agency ₹8,000/mo (30 accounts, 4 additional seats). Additional accounts ₹900/mo each, additional team members ₹800/mo each. Prices exclude GST. 15-day free trial available. 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
  • Multi-client workspace management with separate calendars and feedback history per client
  • Magic link client approval without login or account creation
  • Revision rounds with capped limits and full change tracking
  • Support for Instagram, Facebook, LinkedIn, X, YouTube and Threads via official APIs
  • Real-time analytics for all supported platforms
  • Visual calendar for planning and scheduling content
  • Spreadsheet import for batch post scheduling
  • Team role-based permissions and access controls
  • Client portal with authenticated access on Professional and Agency plans
  • INR billing with UPI AutoPay and automatic GST invoices
  • 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
  • Built specifically for Indian agencies with IST timezone, INR pricing and DPDP compliance
  • Single magic link approval workflow eliminates client account creation and access overhead
  • Supports up to 30 client accounts in one workspace with independent scaling of seats and accounts
  • Integrated approval history and revision tracking keeps all feedback with the content
  • 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 votes00
DR (Domain Rating by Ahrefs)17 +1 (up) since last check19 +1 (up) since last check
Trust Flow (Majestic)1811
Citation Flow (Majestic)2817
Referring domains (Majestic)9925

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