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Chrome extensionwhat they say

ReadCube

Easily import articles and webpages to your ReadCube library.

★★★★☆4.0 (46) · 60k+ users
Free
Chrome Web Store ↗
what mrrlens sees
MRR · No price listedNo price in the listing
Opportunity—
Buyer threads · 30 d0
“When i use this, it classifies the papers into random folders unrelated to the paper.”
#1 complaint · Bugs/Reliability · 83% of complaints read · analysed Oct 30, 2026 · source

01Revenue

No price in the listing

Store data from the Chrome Web Store listing, refreshed daily. Updated 14 h ago.

02Why users leave ReadCube

Bugs/Reliability5 reviews · 83%

Import misclassifies papers into random folders; app fails on latest arXiv, Chrome PDFs, and Google Scholar, breaking library organization.

“When i use this, it classifies the papers into random folders unrelated to the paper.” source ↗
1 more complaint, with verbatim quotesIncluded in the day pass and Pro.
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Sample: 6 recent complaints (1–3★ reviews) · clustered Oct 30, 2026 · complaints from Feb 2023–Sep 2026, 67% in the last 24 months · each review labelled by a model, quotes verbatim

03How to build a better ReadCube

Build difficultyMediumFragile third-party site integrations, PDF parsing, browser extension behavior, and reliable folder/export handling.
Three build ideas that answer these complaintsIncluded in the day pass and Pro.
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04Who wants a better ReadCube

0 buyer threads in the last 30 days name ReadCube, and 2 more are in the same market.

05Questions about ReadCube

How much revenue does ReadCube make?

ReadCube'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 ReadCube?

Across 6 recent complaints, the most common is bugs/reliability (83%). Import misclassifies papers into random folders; app fails on latest arXiv, Chrome PDFs, and Google Scholar, breaking library organization.

How many people use ReadCube?

ReadCube lists 60k+ users on the Chrome Web Store, rated 4.0 (46).

See the full x-ray of ReadCube

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