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Checker Plus for Google Calendar™

Chrome extension by JasonSavard.com · Productivity · Workflow

  • Established publisher
  • Trader

A Chrome extension in Productivity · Workflow with 300 000 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 5 screenshots

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

Users
300 000
Rating
4.3 (2 059 ratings)
Users, last 30 days
Unchanged (the store rounds this count to 100 000, so it moves only between steps)
Rating, last 30 days
-0.14 in 30 days
Version
47.0
Updated in the store
2026-10-14
Published
2010-06-11
Manifest
V3
Browser access
14 permissions

How it has moved

Users
unchanged since 29.09
300k · 7 readings
2026-09-29: released 46.2.32026-10-14: released 47.0
  1. 2026-10-04300k
  2. 2026-10-09300k
  3. 2026-10-14300kreleased 47.0
  4. 2026-10-22300k
  5. 2026-10-23300k
  6. 2026-10-28300k
  7. 2026-10-29300k
Rating
-0.14 since 29.09
reviewsrating 4.27-4.42 · 7 readings
2026-09-29: released 46.2.32026-10-14: released 47.0
  1. 2026-10-04reviews2.1krating4.42
  2. 2026-10-09reviews2.1krating4.42
  3. 2026-10-14reviews2.1krating4.27released 47.0
  4. 2026-10-22reviews2.1krating4.28
  5. 2026-10-23reviews2.1krating4.27
  6. 2026-10-28reviews2.1krating4.28
  7. 2026-10-29reviews2.1krating4.28
Users
unchanged since 31.08
300k · 11 readings
2026-09-12: released 46.22026-09-16: released 46.2.12026-09-25: released 46.2.22026-09-29: released 46.2.32026-10-14: released 47.0
  1. 2026-08-31300k
  2. 2026-09-15300k
  3. 2026-09-21300k
  4. 2026-09-26300k
  5. 2026-10-04300k
  6. 2026-10-09300k
  7. 2026-10-14300kreleased 47.0
  8. 2026-10-22300k
  9. 2026-10-23300k
  10. 2026-10-28300k
  11. 2026-10-29300k
Rating
-0.14 since 31.08
reviewsrating 4.27-4.42 · 11 readings
2026-09-12: released 46.22026-09-16: released 46.2.12026-09-25: released 46.2.22026-09-29: released 46.2.32026-10-14: released 47.0
  1. 2026-08-31reviews2.1krating4.42
  2. 2026-09-15reviews2.1krating4.42
  3. 2026-09-21reviews2.1krating4.42
  4. 2026-09-26reviews2.1krating4.42
  5. 2026-10-04reviews2.1krating4.42
  6. 2026-10-09reviews2.1krating4.42
  7. 2026-10-14reviews2.1krating4.27released 47.0
  8. 2026-10-22reviews2.1krating4.28
  9. 2026-10-23reviews2.1krating4.27
  10. 2026-10-28reviews2.1krating4.28
  11. 2026-10-29reviews2.1krating4.28

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.

  • Sign you in with a Google account identity
  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
Show the remaining 11
  • Schedule work to run later alarms
  • Add items to the right-click menu contextMenus
  • Receive push messages from its developer gcm
  • Tell whether you are away from the computer idle
  • Show you notifications notifications
  • Run work in a hidden page offscreen
  • Open a panel beside the page sidePanel
  • Store data in your browser storage
  • Read your display setup system.display
  • Speak text out loud tts
  • Store data in your browser without the usual size limit unlimitedStorage

The full permission history for this extension

Version history

  1. Version 47.0
  2. Version 46.2.3
  3. Version 46.2.2
Show the remaining 2
  1. Version 46.2.1
  2. Version 46.2

What changed recently

  1. Package size changed
  2. Released version 47.0 (was 46.2.3)
  3. Released version 46.2.3 (was 46.2.2)
Show the remaining 5
  1. Package size changed
  2. Released version 46.2.2 (was 46.2.1)
  3. Released version 46.2.1 (was 46.2)
  4. Package size changed
  5. Released version 46.2 (was 46.1.1)

The publisher

JasonSavard.com publishes 6 listings we track, 1.5M users between them. Listed website: jasonsavard.com.

  1. Checker Plus for Gmail™ JasonSavard.com · Productivity · Workflow · published 2011-12-15 1.0M users ★ 4.3
  2. Explain and Send Screenshots JasonSavard.com · Productivity · Tools · published 2010-04-12 100k users ★ 4.5
  3. Webmail Ad Blocker JasonSavard.com · Productivity · Workflow · published 2010-01-22 90k users ★ 4.4
Show 2 more from this publisher
  1. Checker Plus for Google Drive™ JasonSavard.com · Productivity · Workflow · published 2012-10-15 30k users ★ 4.5
  2. Recent Tabs JasonSavard.com · Productivity · Tools · published 2010-02-20 20k users ★ 4.2

Like this one

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

  1. Google Calendar Natural Language Input Describes nearly the same job, smaller audience 702 users ★ 4.5
  2. One-Touch Calendar Describes nearly the same job, smaller audience 11 users
  3. Google Calendar Event Adder Describes nearly the same job, smaller audience 229 users ★ 3.0
  4. CalendarExtension - add events while browsing Describes nearly the same job, smaller audience 6 users
  5. Persistent Calendar Bar Describes nearly the same job, smaller audience 6 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

<a href="https://extops.dev/extensions/hkhggnncdpfibdhinjiegagmopldibha"><img src="https://extops.dev/extensions/hkhggnncdpfibdhinjiegagmopldibha/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>

Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-10-28. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built