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Scientific Calculator

Chrome Web Store listing by Matthew Crumley

  • Established publisher

A Chrome extension with 200 000 users, a widely installed extension. Audience over the last 30 days: unchanged.

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

What the developer says, and 2 screenshots

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

Users
200 000 (the store no longer states an audience; this is the last figure it published)
Rating
4.0 (624 ratings)
Users, last 30 days
Unchanged
Rating, last 30 days
-0.13 in 30 days
Version
1.2.0
Updated in the store
2019-03-08
Published
2011-06-15
Manifest
V2
Browser access
1 permission

How it has moved

Users
unchanged since 04.10
200k · 4 readings
  1. 2026-10-10200k
  2. 2026-10-14200k
  3. 2026-10-19200k
  4. 2026-11-03200k
Rating
-0.13 since 04.10
reviewsrating 3.97-4.11 · 4 readings
  1. 2026-10-10reviews625rating4.10
  2. 2026-10-14reviews625rating3.97
  3. 2026-10-19reviews624rating3.97
  4. 2026-11-03reviews624rating3.97
Users
unchanged since 01.09
0-200k · 7 readings
  1. 2026-09-01200k
  2. 2026-09-060
  3. 2026-09-08200k
  4. 2026-10-10200k
  5. 2026-10-14200k
  6. 2026-10-19200k
  7. 2026-11-03200k
Rating
-0.13 since 01.09
reviewsrating 3.97-4.11 · 7 readings
  1. 2026-09-01reviews626rating4.11
  2. 2026-09-06reviews626rating4.11
  3. 2026-09-08reviews626rating4.11
  4. 2026-10-10reviews625rating4.10
  5. 2026-10-14reviews625rating3.97
  6. 2026-10-19reviews624rating3.97
  7. 2026-11-03reviews624rating3.97

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times 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.

  • 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

Matthew Crumley publishes 2 listings we track, 200k users between them. Listed website: scicalc.io.

  1. Detroit Red Wings Matthew Crumley · published 2011-04-13 329 users ★ 4.3

Like this one

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

  1. CmdCalc - Command Line Calculator Describes nearly the same job, smaller audience 5 users
  2. Scientific Calculator Describes nearly the same job, smaller audience 3 users
  3. SlideCalc Describes nearly the same job, smaller audience 8 users
  4. Melanto Calculator Describes nearly the same job, smaller audience 6k users ★ 4.2
  5. Floating Scientific Calculator Pro: Offline Math Tool. Describes nearly the same job, smaller audience 96 users

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.

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Users and rating on Ext Ops Panel

Markdown

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HTML

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Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-10-19. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built