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Caldera vs ReplyKit

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

Caldera compared with ReplyKit
DetailCaldera logo CalderaReplyKit logo ReplyKit
What it doesThe social network for GitHub and Obsidian Not given
StageNot given Not given
FoundedNot given Not given
Based inNot given FR
Pricing modelOpen source Freemium
PricingNot given Free: 10 free replies on first day then 3 per day, three drafts per reply, Radar badges on X, works on X, LinkedIn and Reddit, uses Claude Sonnet. Free account: €0 with email signup, 5 replies per day, settings synced across devices, all free features. Pro: €6.99 per month, 1,000 replies per month w
Key features
  • GitHub city visualization showing repos as buildings and districts
  • Living profile with daily journal, activity score and streaks
  • End-to-end encrypted private note sharing
  • AI agent and coding activity visualization
  • World map showing all members' cities and neighborhoods
  • Asks and offers with gravity rewards
  • Read-only GitHub integration with no code access
  • Self-hosted profile export to static site
  • Mobile support on iOS and Android
  • Cryptographic identity key stored locally in vault
  • Generates three draft replies per post
  • Works on X, LinkedIn and Reddit
  • Radar dock shows ranked opportunities in Pro plan
  • Web app for mobile use without extension
  • Replies in the language of the original post
What makes it different
  • Free and open source with no telemetry
  • Visualizes GitHub activity as a living city that updates automatically
  • Privacy by default: nothing leaves your Obsidian vault unless you explicitly choose
  • Sign up with just GitHub, no installation required
  • Self-hosted option with open protocol
  • Direct feedback channel to the developer for improvements
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)30 +1 (up) since last check7 no change since last check
Trust Flow (Majestic)75
Citation Flow (Majestic)2619
Referring domains (Majestic)2116

3 details filled in for both companies.

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