WordPress pluginwhat they say

Query Monitor

Query Monitor is the developer tools panel for WordPress and WooCommerce.

★★★★★4.9 (470) · 200k+ active installs

Free

Website ↗ WordPress.org ↗

what mrrlens sees

MRR · No price listedNo price in the listing

Opportunity—

Buyer threads · 30 d0

“Totally Crashed Our Backend”

#1 complaint · Bugs/Reliability · 71% of complaints read · analysed Oct 29, 2026 · source

01Revenue

No price in the listing

Revenue unknownNo price is published in the listing.

2 daily snapshots · growth 30 d: —

Store data from the WordPress.org listing, refreshed daily. Updated 16 h ago. Listed since 2013.

02Why users leave Query Monitor

5★97%

4★1%

3★0%

2★0%

1★2%

Bugs/Reliability5 reviews · 71%

Plugin caused backend crashes, sites inaccessible, and page loads up to 30 seconds slower after activation.

“Totally Crashed Our Backend” source ↗

2 more complaints, with verbatim quotesIncluded in the day pass and Pro.

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Sample: 7 recent complaints (1–3★ reviews) · clustered Oct 29, 2026 · complaints from Apr 2018–Feb 2025, 14% in the last 24 months — mostly history · each review labelled by a model, quotes verbatim

03How to build a better Query Monitor

Build difficultyLowNo payments, regulation, hardware, or network effects; main work is WordPress performance and reliability.

Three build ideas that answer these complaintsIncluded in the day pass and Pro.

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04Who wants a better Query Monitor

0 buyer threads in the last 30 days name Query Monitor, and 1 more is in the same market.

05Questions about Query Monitor

How much revenue does Query Monitor make?

Query Monitor'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 Query Monitor?

Across 7 recent complaints, the most common is bugs/reliability (71%). Plugin caused backend crashes, sites inaccessible, and page loads up to 30 seconds slower after activation.

How many people use Query Monitor?

Query Monitor lists 200k+ active installs on WordPress.org, rated 4.9 (470).

See the full x-ray of Query Monitor

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