MarklyKit vs Stackpeek

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

MarklyKit compared with Stackpeek
Detail	MarklyKit	Stackpeek
What it does	Browser extension for highlighting, annotating, and taking notes on any webpage	Free Shopify theme detector and app detector for Chrome and Firefox
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Free
Pricing	Free plan includes unlimited highlighting and drawing with local-only storage. Pro plan costs $7.99/month with a 7-day free trial, including cloud sync, unlimited sticky notes, PDF export, AI connectors, and API access.	Free for theme, app and tracker detection; CSV product export is also free. A paid Store Intelligence tier with organic traffic data, SEO audits and backlink profiles is coming soon.
Key features	Privacy masking with blur tool for sensitive data AI connectors for Claude, ChatGPT, and Grok via MCP server Local-first storage with optional cloud sync on Pro plan Keyboard shortcuts for rapid tool switching Focus mode to toggle annotation visibility Browser PDF highlighting support	App fingerprinting with 885 apps in database Tracker identification from Meta, TikTok, Snap, Pinterest, Reddit Product catalogue export to CSV in Shopify import format Up to 10,000 products per export with titles, descriptions, prices, SKUs, tags and image URLs Open source code under MIT licence with published permissions Auto-scan mode to detect Shopify stores across tabs No account signup or browsing history collection Detection results in about one second Headless store detection labeled as headless instead of guessed
What makes it different	Designed specifically for academic research with citation-ready PDF exports Built-in MCP server enabling direct AI integration without copy-pasting No account required to start highlighting immediately	Honest detection that labels unverifiable results and custom builds rather than guessing Largest known app database of 885 fingerprinted apps, growing with every scan Simplest workflow requiring only one click with no form submission or waiting No data sent to server during product export; catalogue assembled in browser only
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)	Not checked yet no change since last check	9 no change since last check
Trust Flow (Majestic)	0	9
Citation Flow (Majestic)	6	17
Referring domains (Majestic)	2	9

5 details filled in for both companies.

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