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Crazy Numbers - Fun Math Game

Chrome extension by seppo.karjalainen · Productivity · Education

A Chrome extension in Productivity · Education with 46 users, barely installed. Audience over the last 30 days: +1.

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

What the developer says, and 8 screenshots

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

Users
46
Rating
not rated yet
Users, last 30 days
+1
Version
2.2
Updated in the store
2026-08-14
Published
2024-05-18
Manifest
V3
Browser access
1 permission

How it has moved

Users
+1 since 01.10
37-46 · 18 readings
  1. 2026-10-0843
  2. 2026-10-0941
  3. 2026-10-1140
  4. 2026-10-1341
  5. 2026-10-1640
  6. 2026-10-1738
  7. 2026-10-1839
  8. 2026-10-1941
  9. 2026-10-2040
  10. 2026-10-2141
  11. 2026-10-2238
  12. 2026-10-2340
  13. 2026-10-2539
  14. 2026-10-2637
  15. 2026-10-2841
  16. 2026-10-2944
  17. 2026-10-3046
  18. 2026-10-3146
Users
+15 since 01.09
31-48 · 30 readings
  1. 2026-09-0131
  2. 2026-09-0432
  3. 2026-09-0634
  4. 2026-09-0735
  5. 2026-09-0836
  6. 2026-09-0936
  7. 2026-09-1335
  8. 2026-09-1536
  9. 2026-09-1738
  10. 2026-09-2140
  11. 2026-09-2548
  12. 2026-09-2645
  13. 2026-10-0843
  14. 2026-10-0941
  15. 2026-10-1140
  16. 2026-10-1341
  17. 2026-10-1640
  18. 2026-10-1738
  19. 2026-10-1839
  20. 2026-10-1941
  21. 2026-10-2040
  22. 2026-10-2141
  23. 2026-10-2238
  24. 2026-10-2340
  25. 2026-10-2539
  26. 2026-10-2637
  27. 2026-10-2841
  28. 2026-10-2944
  29. 2026-10-3046
  30. 2026-10-3146

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

seppo.karjalainen publishes 5 listings we track, 89 users between them.

  1. Crazy Molecules - Fun Chemistry Game seppo.karjalainen · Productivity · Education · published 2025-09-13 25 users
  2. Twitter Fast Reply seppo.karjalainen · Productivity · Tools · published 2024-08-02 11 users
  3. Window Resizer seppo.karjalainen · Productivity · Developer · published 2024-11-08 4 users
Show 1 more from this publisher
  1. Distance Dash seppo.karjalainen · Productivity · Education · published 2025-05-15 3 users (last published figure)

Like this one

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

  1. CrystalMath Describes nearly the same job, smaller audience 14 users ★ 3.7
  2. Math Booster Describes nearly the same job, smaller audience 3 users (last published figure)
  3. Mental Calculation Game Describes nearly the same job, smaller audience 7 users
  4. Prodigy Math Describes nearly the same job audience not published ★ 1.0
  5. Math Game Describes nearly the same job, smaller audience 9 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 2026-10-30. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built