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Calculator

Chrome Web Store listing by Aidan

A Chrome extension with 400 000 users, a widely installed extension.

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

What the developer says, and 4 screenshots

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

Users
400 000 (the store no longer states an audience; this is the last figure it published)
Rating
3.6 (660 ratings)
Users, last 16 days
+100k
Rating, last 30 days
Not watched long enough to say
Version
4.5.5
Updated in the store
2017-09-26
Published
2011-05-30
Manifest
V2
Browser access
4 permissions

How it has moved

Users
+100k since 31.08
300k-400k · 4 readings
  1. 2026-08-31300k
  2. 2026-09-04400k
  3. 2026-09-09400k
  4. 2026-09-15400k
Rating
unchanged since 31.08
reviewsrating 3.59 · 4 readings
  1. 2026-08-31reviews660rating3.59
  2. 2026-09-04reviews660rating3.59
  3. 2026-09-09reviews660rating3.59
  4. 2026-09-15reviews660rating3.59
Users
+100k since 31.08
300k-400k · 4 readings
  1. 2026-08-31300k
  2. 2026-09-04400k
  3. 2026-09-09400k
  4. 2026-09-15400k
Rating
unchanged since 31.08
reviewsrating 3.59 · 4 readings
  1. 2026-08-31reviews660rating3.59
  2. 2026-09-04reviews660rating3.59
  3. 2026-09-09reviews660rating3.59
  4. 2026-09-15reviews660rating3.59

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.

  • Read what you have copied clipboardRead
  • Put data on your clipboard clipboardWrite
  • Add items to the right-click menu contextMenus
Show the remaining 1
  • Store data in your browser storage

The full permission history for this extension

What changed recently

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

The publisher

Aidan publishes 4 listings we track, 401k users between them.

  1. Tic Tac Toe Aidan 530 users ★ 3.0
  2. Particle Aidan · published 2011-09-16 62 users ★ 3.0
  3. Internet Killed Television Theme Aidan · published 2011-05-28 23 users ★ 4.3

Like this one

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

  1. Calculator Describes nearly the same job, smaller audience 2k users ★ 4.0
  2. Calculator Describes nearly the same job audience not published ★ 4.0
  3. Melanto Calculator Describes nearly the same job, smaller audience 6k users ★ 4.2
  4. Melanto Calculator Describes nearly the same job, with an established audience 10k users ★ 4.0
  5. Clean Calculator Describes nearly the same job, smaller audience 306 users ★ 4.5

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.