Side Copilot vs Mastros

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

Side Copilot compared with Mastros
Detail	Side Copilot	Mastros
What it does	Browse less. Get more done.	Privacy-first Chrome extensions that export chat and social media data to spreadsheets
Stage	Not given	Startup
Founded	Not given	2026
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free: $0/month with up to 5 spaces and basic chat. Pro: $2.9/month ($4.9 monthly equivalent) with unlimited spaces and Agent Mode. Pro+: $7.9/month ($11.9 monthly equivalent) with cross-page agent and additional tools. Yearly plans include 2 months free.	Free: 100 profiles and 100 messages per month (WhatsApp), or 250 profiles and 300 messages per month (Telegram), or 250 records (LinkedIn). Instagram and TikTok free and unlimited in beta. Pro: $9/month with 5,000 profiles and 10,000 messages per month (WhatsApp), or 5,000 records (LinkedIn). Scale:
Key features	Vertical tabs manager in side panel Group tabs by domain or AI Chat mode to query open tabs Agent mode for browser automation Suspend tabs to free memory Pin and search tabs Support for multiple languages Save and restore tab groups	Export group members and chat messages to CSV, JSON or JSONL Bulk media download from chats Export LinkedIn searches with Sales Navigator support Extract email and website from Instagram and TikTok bios Calculate exact TikTok engagement rates Process all data in the browser with no server involvement Read-only with no automation or message sending
What makes it different	AI-powered tab organization without switching browsers Side panel operates without breaking workflow Works across multiple browsers and platforms Generous free plan with cloud sync Natural language AI grouping	Works with no account creation, API key or password required Reads only visible data; cannot reveal hidden information or deleted messages Five tools with the same pricing model and interface Instagram and TikTok extensions are free and unlimited during beta
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)	52 no change since last check	35 no change since last check
Trust Flow (Majestic)	20	10
Citation Flow (Majestic)	32	28
Referring domains (Majestic)	287	54

5 details filled in for both companies.

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