Mastros vs SellerGrab

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

Mastros compared with SellerGrab
Detail	Mastros	SellerGrab
What it does	Privacy-first Chrome extensions that export chat and social media data to spreadsheets	Download eBay listing photos in HD and save the listing video without an account
Stage	Startup	Not given
Founded	2026	Not given
Based in	Not given	Not given
Pricing model	Freemium	Not given
Pricing	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:	Free: unlimited image downloads, 3 listing videos per day, no sign-in required. Pro: $39 per year or $5.99 per month — unlimited video downloads, XLSX export, image format choice (JPG/WEBP/PNG), custom filename templates.
Key features	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	Download all listing photos at full resolution (s-l1600) Save listing video as playable MP4 Works on 8 eBay country sites No account or sign-in required for free tier Download as ZIP or separate files 3 free video downloads per day XLSX export of listing details (Pro) Custom image formats and filename templates (Pro) Unlimited video downloads (Pro) No uploads; media travels directly from eBay to disk
What makes it different	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 tier includes video downloads (3 per day), which competitors put behind paid plans No account or sign-in required for free tier Requests permissions for eBay only, not all sites Full resolution available on free tier, not a paid feature
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)	35 no change since last check	27 no change since last check
Trust Flow (Majestic)	10	5
Citation Flow (Majestic)	28	26
Referring domains (Majestic)	54	31

4 details filled in for both companies.

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