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Sieve of Eratosphenes

Chrome Web Store listing by Michael McDaid

A Chrome extension with 766 users, barely installed.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 3 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
766 (the store no longer states an audience; this is the last figure it published)
Rating
2.5 (2 ratings)
Users, last 16 days
+37
Rating, last 30 days
Not watched long enough to say
Version
1.0.2
Updated in the store
2014-01-23
Published
2014-01-23
Manifest
V2
Browser access
5 permissions

How it has moved

Users
+37 since 01.09
729-766 · 6 readings
  1. 2026-09-01729
  2. 2026-09-03734
  3. 2026-09-04740
  4. 2026-09-10738
  5. 2026-09-13766
  6. 2026-09-16766
Rating
unchanged since 01.09
reviewsrating 2.50 · 6 readings
  1. 2026-09-01reviews2rating2.50
  2. 2026-09-03reviews2rating2.50
  3. 2026-09-04reviews2rating2.50
  4. 2026-09-10reviews2rating2.50
  5. 2026-09-13reviews2rating2.50
  6. 2026-09-16reviews2rating2.50
Users
+37 since 01.09
729-766 · 6 readings
  1. 2026-09-01729
  2. 2026-09-03734
  3. 2026-09-04740
  4. 2026-09-10738
  5. 2026-09-13766
  6. 2026-09-16766
Rating
unchanged since 01.09
reviewsrating 2.50 · 6 readings
  1. 2026-09-01reviews2rating2.50
  2. 2026-09-03reviews2rating2.50
  3. 2026-09-04reviews2rating2.50
  4. 2026-09-10reviews2rating2.50
  5. 2026-09-13reviews2rating2.50
  6. 2026-09-16reviews2rating2.50

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • Declares alwaysOnTopWindows
  • Declares http://www.youtube.com/
  • Declares https://www.google-analytics.com/*
Show the remaining 2
  • Store data in your browser storage
  • Declares webview

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

Michael McDaid publishes 4 listings we track, 49k users between them. Listed website: visnos.com.

  1. Fraction Wall by Visnos Michael McDaid · published 2012-11-12 40k users (last published figure) ★ 3.8
  2. Fraction Percentage Decimal Michael McDaid · published 2014-01-22 5k users (last published figure) ★ 4.0
  3. Webcam & Image Renderer Michael McDaid · published 2011-09-26 3k users ★ 2.9

Like this one

Listings the catalog judges closest in what they say they do.

  1. Euclid's Algorithm Describes nearly the same job, smaller audience 14 users
  2. Buscador Mensajería Séneca Describes a similar job, smaller audience 40 users
  3. SightSolve - Screenshot AI Homework Helper & Step-by-Step Tutor Describes a similar job, smaller audience 83 users ★ 5.0
  4. Class Monitor Describes a similar job, smaller audience 3 users (last published figure)
  5. Google Classroom Search Describes a similar job, smaller audience 17 users ★ 1.5

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.