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Mastros vs Nook

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 Nook
DetailMastros logo MastrosNook logo Nook
What it doesPrivacy-first Chrome extensions that export chat and social media data to spreadsheets A Chrome extension that helps you stay focused, keep your place, and finish reading articles
StageStartup Not given
Founded2026 Not given
Based inNot given Not given
Pricing modelFreemium Free trial
PricingFree: 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 trial with full access to all features, no credit card required. After trial: $5/month or $39/year.
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
  • Autopace: guided reading that moves at your rhythm
  • Bionic reading mode for faster word recognition
  • Paragraph and line chunking to break down text walls
  • Seven specialized fonts including OpenDyslexic, Lexend, and Atkinson Hyperlegible
  • Calm background colors to reduce eye strain
  • Distraction-free reading mode
  • Works on any website, EPUB, or PDF
  • No ads or interruptions
  • Reading progress syncs across devices
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
  • Built specifically for ADHD brains, not generic readers
  • Research-backed features grounded in peer-reviewed studies
  • Every feature designed to reduce mental effort, not add to it
  • 30-day money-back guarantee
  • Cancel anytime with no questions asked
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)35 no change since last check2 no change since last check
Trust Flow (Majestic)104
Citation Flow (Majestic)2823
Referring domains (Majestic)5414

5 details filled in for both companies.

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