Kortex organizes Gemini Notebook content, $3.4K MRR: 130,000+ users

Kortex is a Chrome extension for importing, organizing, automating, and exporting Gemini Notebook content. Its $3.4K MRR is verified through the payment provider's API by TrustMRR (Dodo Payments), as of September 30, 2026.

What it actually sells

Kortex is a Chrome extension for importing, organizing, automating, and exporting Gemini Notebook content. Users can import sources from AI chats, webpages, bulk sources, and Google Docs, then manage notebooks through collections, tags, stars, and search.

Kortex also automates repetitive notebook work with saved rules and schedules. It exports notebooks as PDF, Markdown, plain text, or ZIP files, and saves prompts, folders, tags, and notes for reuse. Kortex has $3.4K MRR, verified through the payment provider's API by TrustMRR (Dodo Payments), as of 2026-09-30.

How it charges

Kortex’s Pro plan is $4.92 per month billed annually. The site lists the former price as $9.99. The free portion of Kortex is the Chrome extension described on the product page.

Month by month

Monthly revenue as read from the payment provider by TrustMRR, in US dollars, as of September 30, 2026.

Month	Revenue (USD)
2026-01	$20,146
2026-02	$53,034
2026-03	$56,576
2026-04	$27,813
2026-05	$14,520
2026-06	$25,384
2026-07	$15,961
2026-08	$11,977
2026-09	$3,889

Where customers come from

Kortex is used by researchers, students, writers, and analysts in Chrome, Edge, and Brave. Its site says, “Today Kortex is used by researchers, students, writers and analysts in Chrome, Edge and Brave.” It also invites visitors to “Join 130,000+ people.”

The pages read do not disclose which acquisition channels brought these users to Kortex. They also do not state when Kortex was founded or provide founder details. The visible audience signals are the product’s named user groups, supported browsers, Chrome extension format, and public roadmap.

What stands out

Kortex combines several notebook operations in one Chrome extension: importing material from other AI services, organizing notebooks, running saved rules, reusing prompts and folders, and exporting files. Its source page lists AI chats, webpages, bulk sources, Google Docs, ChatGPT, Claude, Gemini, and Perplexity.

Kortex describes itself as an independent project with public roadmap voting. Its site says, “Our roadmap is public and the people who use Kortex vote on it.” The product page also reports usage by 130,000+ people.

From the official site

Today Kortex is used by researchers, students, writers and analysts in Chrome, Edge and Brave.

From your AI chats A Send to Notebook button inside ChatGPT, Claude, Gemini, Perplexity and more.

Our roadmap is public and the people who use Kortex vote on it.

Excerpts from the official website, fetched October 1, 2026.

Where it sits in the data

Kortex's $3.4K MRR is higher than 87% of the 5,602 projects with payment-verified revenue in our dataset; the median across them is $150. Within the “Education” category (517 projects) it is higher than 89% (category median $156). Snapshot: 2026-09-02 to 2026-09-30. The dataset only covers founders who chose to publish their numbers, so it leans toward businesses that work; use it for scale, not as an average.

Currency

All figures are in US dollars as published. A rough yuan or euro conversion is not applied here because prices, taxes and acquisition costs differ by country.

Could you build something like this?

My view is that this needs real work. The buyer is a researcher, student, writer, or analyst who uses Gemini Notebook and wants stronger importing, organization, automation, and export controls. Browser-based distribution could connect directly with people already working inside the supported tools.

The hard parts include keeping browser-extension work reliable across Chrome, Edge, and Brave, maintaining integrations with several AI services, and handling support for imports, saved rules, schedules, and exports. Privacy, access controls, and changing platform behavior also require attention. Competition would come from general productivity tools and built-in notebook features.

Verdict: Needs real work.

One thing to take from it

The clearest product lesson is to package a connected workflow. Kortex covers the path from importing sources through organizing notebooks, automating repeated work, saving reusable materials, and exporting the result.

Sources

Kortex official website, fetched October 1, 2026
Kortex about page, fetched October 1, 2026
TrustMRR: revenue verified through the payment provider's API by TrustMRR (Dodo Payments), as of September 30, 2026

Revenue, team and start-cost figures are what the founder reported at the interview date, not current figures and not a prediction of what you will earn. Product and pricing facts come from the business's own website as checked on 30 September 2026. Method & sources · Disclosure