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Index vs Mastros

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

Index compared with Mastros
DetailIndex logo IndexMastros logo Mastros
What it doesKeep work, personal life, and every project in its own space. Switch between them without closing tabs or losing your place. Privacy-first Chrome extensions that export chat and social media data to spreadsheets
StageNot given Startup
FoundedNot given 2026
Based inNot given Not given
Pricing modelFree Freemium
PricingNot given 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
  • Spaces, each holding its own groups that open as Chrome tab groups
  • Favorites: up to eight pinned pages that stay with you in every space
  • Sleeping tabs that go out of sight and come back when clicked
  • Hundreds of themes
  • Rewind function keeping a week of changes on your computer
  • Export one JSON file to share with AI assistants like ChatGPT or Claude
  • Search any group, space or link from any page
  • Private by design with no account, server, or network requests
  • 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
  • Keeps a week of changes you can rewind through on your computer
  • Sleeping tabs preserve your place while keeping them out of sight
  • 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 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)20 no change since last check35 no change since last check
Trust Flow (Majestic)010
Citation Flow (Majestic)928
Referring domains (Majestic)754

4 details filled in for both companies.

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