PenguinRadar vs Sydium

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

PenguinRadar compared with Sydium
Detail	PenguinRadar	Sydium
What it does	Instagram tracker and analyzer for public accounts	AI social media management that learns your voice from your past posts
Stage	Not given	Startup
Founded	Not given	2025
Based in	US	RO
Pricing model	Freemium	Free trial
Pricing	Free: 50 signup credits plus 10 daily credits for lookups. Free Track: one following list up to 1,000 accounts, 3 scans in 7 days. Lite: $99/year (≈$8.25/month) with 1,000 monthly credits. Starter: $199/year (≈$16.58/month) with 2,500 monthly credits. Pro: $499/year (≈$41.58/month) with 7,000 monthl	Pro: $28/month (billed annually, $35/month billed monthly); Agency: $79/month (billed annually, $99/month billed monthly); Enterprise: $499/month (billed annually, individual terms). 14-day free trial with card required, $0 charged today.
Key features	Instagram Story Viewer Instagram Likes Viewer Instagram Follower Viewer Instagram Follower Tracker Instagram Unfollow Tracker AI Analyzer for tracked accounts Follower export to CSV Email alerts for detected changes REST API and CLI access ChatGPT plugin and MCP server	Brand Voice training from existing posts across 7 platforms Three daily content ideas personalized to your niche Image, Video, and Carousel Studios for content creation Unified inbox for comments and DMs from 7-8 platforms AI-suggested replies in your brand voice Publishing to 11 social platforms Scheduling with recurring, queued, and one-time options Autopilot mode with automatic safeguards Analytics and performance tracking per platform and post
What makes it different	No Instagram password required; uses email or Google sign-in Tracks changes with exact dates, not just final counts Priced per scan, not per subscription week Works across web, mobile apps and AI assistants with one account	Learns your exact voice from past posts rather than generic AI templates Single editor with platform-specific preview and optimization for 11 platforms Built and maintained by a single developer bootstrapped without investors Transparent build-in-public approach with honest marketing and no fake dashboards
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	1 no change since last check	36 +1 (up) since last check
Trust Flow (Majestic)	0	3
Citation Flow (Majestic)	13	36
Referring domains (Majestic)	2	86

6 details filled in for both companies.

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