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Chrome extensionwhat they say

Nanobrowser

An AI agent that works in your browser, in a side panel beside the page

★★★★☆3.7 (70) · 50k+ users
Free
Website ↗ Chrome Web Store ↗
what mrrlens sees
MRR · No price listedNo price in the listing
Opportunity—
Buyer threads · 30 d0
“I added my OpenRouter API key, then tried to enter my preferred model, but the model input field was disabled and contained the "No models selected. Add model names manually if needed" placeholder.”
#1 complaint · Bugs/Reliability · 80% of complaints read · analysed Oct 29, 2026 · source

01Revenue

No price in the listing

Store data from the Chrome Web Store listing, refreshed daily. Updated 22 h ago.

02Why users leave Nanobrowser

Bugs/Reliability4 reviews · 80%

OpenRouter key added but model field disabled; autopopulated models invalid; Gemini models fail; scrolling/text entry unreliable; agent cannot see page text.

“I added my OpenRouter API key, then tried to enter my preferred model, but the model input field was disabled and contained the "No models selected. Add model names manually if needed" placeholder.” source ↗
1 more complaint, with verbatim quotesIncluded in the day pass and Pro.
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Sample: 5 recent complaints (1–3★ reviews) · clustered Oct 29, 2026 · complaints from May 2026–Oct 2026, almost all in the last 24 months · each review labelled by a model, quotes verbatim

03How to build a better Nanobrowser

Build difficultyMediumBrowser automation permissions, model/API integration, and extension-store approval; no payments, regulation, or hardware.
Three build ideas that answer these complaintsIncluded in the day pass and Pro.
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04Who wants a better Nanobrowser

0 buyer threads in the last 30 days name Nanobrowser, and 15 more are in the same market.

05Questions about Nanobrowser

How much revenue does Nanobrowser make?

Nanobrowser's listing publishes no price and no paid plan, so MRRLens shows no revenue estimate. It may still charge on its own website; a founder can verify the real figure.

What do users complain about most in Nanobrowser?

Across 5 recent complaints, the most common is bugs/reliability (80%). OpenRouter key added but model field disabled; autopopulated models invalid; Gemini models fail; scrolling/text entry unreliable; agent cannot see page text.

How many people use Nanobrowser?

Nanobrowser lists 50k+ users on the Chrome Web Store, rated 3.7 (70).

See the full x-ray of Nanobrowser

Full 1-star breakdown with verbatim quotes, the build blueprint and every live thread — on every product.