Ext Ops Panel
Open the app

Skill Builder Spelling - By Kaiserapps

Chrome Web Store listing by Kaiserapps

A Chrome extension with 9 000 users, a small but real audience.

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
9 000
Rating
3.7 (13 ratings)
Users, last 16 days
+1k
Rating, last 30 days
Not watched long enough to say
Version
1.0.7
Updated in the store
2013-09-12
Published
2013-04-20
Manifest
V2
Browser access
1 permission

How it has moved

Users
+1k since 31.08
0-9k · 5 readings
  1. 2026-08-318k
  2. 2026-09-060
  3. 2026-09-088k
  4. 2026-09-099k
  5. 2026-09-159k
Rating
unchanged since 31.08
reviewsrating 3.69 · 5 readings
  1. 2026-08-31reviews13rating3.69
  2. 2026-09-06reviews13rating3.69
  3. 2026-09-08reviews13rating3.69
  4. 2026-09-09reviews13rating3.69
  5. 2026-09-15reviews13rating3.69
Users
+1k since 31.08
0-9k · 5 readings
  1. 2026-08-318k
  2. 2026-09-060
  3. 2026-09-088k
  4. 2026-09-099k
  5. 2026-09-159k
Rating
unchanged since 31.08
reviewsrating 3.69 · 5 readings
  1. 2026-08-31reviews13rating3.69
  2. 2026-09-06reviews13rating3.69
  3. 2026-09-08reviews13rating3.69
  4. 2026-09-09reviews13rating3.69
  5. 2026-09-15reviews13rating3.69

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.

  • 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

Kaiserapps publishes 6 listings we track, 13k users between them. Listed website: kaiserapps.com.

  1. Skill Builder Spelling Beta - By Kaiserapps Kaiserapps · published 2014-06-30 2k users (last published figure) ★ 4.8
  2. Kaiserapps - Web Developer Tools Kaiserapps · Productivity · Developer · published 2012-12-07 2k users ★ 3.2
  3. Kaiserapps Lab - Visualiser Kaiserapps · published 2012-10-16 144 users (last published figure) ★ 2.2
Show 2 more from this publisher
  1. Australian Postcode Finder by Kaiserapps Kaiserapps · published 2013-03-27 39 users ★ 5.0
  2. Life Clock New Tab Page Kaiserapps · Lifestyle · Fun · published 2021-09-04 25 users ★ 5.0

Like this one

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

  1. Skill Builder Spelling Beta - By Kaiserapps Describes nearly the same job, smaller audience 2k users (last published figure) ★ 4.8
  2. Spelly - Spelling Practice for Kids Describes a similar job, smaller audience 10 users
  3. Spelling B Describes a similar job, smaller audience 2 users
  4. Tag - Spelling Extension Describes a related job, smaller audience 2 users (last published figure)
  5. SpellBound - Smart Spelling Flashcards Describes a related job, smaller audience 230 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.

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.