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Synapse vs ReplyKit

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

Synapse compared with ReplyKit
DetailSynapse logo SynapseReplyKit logo ReplyKit
What it doesWrite once. Post everywhere. Not given
StageNot given Not given
FoundedNot given Not given
Based inSG FR
Pricing modelFree trial 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
  • Write once and publish to multiple platforms simultaneously
  • Built-in design Studio with templates, background remover, and GIF maker
  • AI-powered captions that match your voice
  • Connect up to unlimited accounts across nine social platforms
  • Team workspaces with role-based access control
  • Public REST API and MCP server for automation
  • AI assistant integration with ChatGPT and Claude Code
  • 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
  • All-in-one tool combining cross-posting, scheduling, design, analytics and AI in one place versus separate expensive tools
  • Native publishing through each platform's official tools preserves reach
  • Independent posting means one platform rejection doesn't block others
  • Connect and automate through AI assistants with just one URL
  • 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)5 +1 (up) since last check7 no change since last check
Trust Flow (Majestic)125
Citation Flow (Majestic)1919
Referring domains (Majestic)4816

4 details filled in for both companies.

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